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Table of Contents

Molecules, Volume 5, Issue 12 (December 2000), Pages 1187-1532, M172-M192

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	M172 N. El Aouad, A. Benharref and J.-P. Lavergne Short Note: 8,9-24,25-Diepoxy-Eupho-lanostan-3,4-olactone Molecules 2000, 5(12), M172; doi:10.3390/M172 Received: 4 July 2000 / Accepted: 21 July 2000 / Published: 25 December 2000 Show/Hide Abstract | Download PDF Full-text (90 KB) |  Abstract: n/a (This article belongs to the Section Molbank Section of Molecules, 1997-2001)
	M173 Hai-yang Liu, Xi-ming Hu, Xiao Ying, Zhong-ping Yao, Jin-wang Huang and Liang-nian Ji Short Note: 5-[o-(1-L-Phenylalanylamino)ethoxyl]phenyl-10,15,20-triphenylporphyrin Molecules 2000, 5(12), M173; doi:10.3390/M173 Received: 10 June 2000 / Accepted: 25 August 2000 / Published: 25 December 2000 Show/Hide Abstract | Download PDF Full-text (95 KB) |  Abstract: n/a (This article belongs to the Section Molbank Section of Molecules, 1997-2001)
	M174 Gerard P. Moloney Short Note: 3-Chloro-5-methoxy-1-benzo[b]thiophene-2-sulphonamide Molecules 2000, 5(12), M174; doi:10.3390/M174 Received: 4 September 2000 / Accepted: 20 September 2000 / Published: 25 December 2000 Show/Hide Abstract | Download PDF Full-text (88 KB) |  Abstract: n/a (This article belongs to the Section Molbank Section of Molecules, 1997-2001)
	M175 A. Moghimi, M. Faal Rastegar and M. Ghandi Short Note: 2,4-Dinitrophenylhydrazine-benzo-9-crown-3 Molecules 2000, 5(12), M175; doi:10.3390/M175 Received: 12 June 2000 / Accepted: 28 September 2000 / Published: 25 December 2000 Show/Hide Abstract | Download PDF Full-text (90 KB) |  Abstract: n/a (This article belongs to the Section Molbank Section of Molecules, 1997-2001)
	M176 Rolf Söllner, Thomas Koy and Michael Schmittel Short Note: (u,l,l,u)-3,5-Diethyl-2,4,6-triphenyltetrahydropyran-2,4-diol Molecules 2000, 5(12), M176; doi:10.3390/M176 Received: 18 July 2000 / Accepted: 21 July 2000 / Published: 25 December 2000 Show/Hide Abstract | Download PDF Full-text (89 KB) |  Abstract: n/a (This article belongs to the Section Molbank Section of Molecules, 1997-2001)
	M177 Milos Sedlak and Jirí Hanusek Short Note: 2-(4-Biphenyl-1-yl)-1,3-diazaspiro[4,5]dec-1-en-4-thione Molecules 2000, 5(12), M177; doi:10.3390/M177 Received: 31 August 2000 / Accepted: 19 October 2000 / Published: 25 December 2000 Show/Hide Abstract | Download PDF Full-text (89 KB) |  Abstract: n/a (This article belongs to the Section Molbank Section of Molecules, 1997-2001)
	M178 M. Daoubi, A. Benharref and M. Pierrot Short Note: 2-Carbomethoxynor-31-lanosten-2-enol Molecules 2000, 5(12), M178; doi:10.3390/M178 Received: 29 August 2000 / Accepted: 19 October 2000 / Published: 25 December 2000 Show/Hide Abstract | Download PDF Full-text (80 KB) |  Abstract: n/a (This article belongs to the Section Molbank Section of Molecules, 1997-2001)
	M179 Jean-Marc Poudrel and Peter Karuso Short Note: bis[(N-Benzyloxycarbonyl)-(2R)-amino-4-methylpentyl]disulfide Molecules 2000, 5(12), M179; doi:10.3390/M179 Received: 4 July 2000 / Accepted: 5 August 2000 / Published: 25 December 2000 Show/Hide Abstract | Download PDF Full-text (90 KB) |  Abstract: n/a (This article belongs to the Section Molbank Section of Molecules, 1997-2001)
	M180 Jean-Marc Poudrel and Peter Karuso Short Note: bis[(N-Benzyloxycarbonyl)-(2S)-amino-4-methylpentyl]disulfide Molecules 2000, 5(12), M180; doi:10.3390/M180 Received: 4 July 2000 / Accepted: 5 August 2000 / Published: 25 December 2000 Show/Hide Abstract | Download PDF Full-text (90 KB) |  Abstract: n/a (This article belongs to the Section Molbank Section of Molecules, 1997-2001)
	M181 Huai Xiao, Zenai Chen, Guangming Liu, Jinfu Qian and Yang Lu Short Note: A New Xanthone from Swertia decora Molecules 2000, 5(12), M181; doi:10.3390/M181 Received: 29 August 2000 / Accepted: 19 October 2000 / Published: 25 December 2000 Show/Hide Abstract | Download PDF Full-text (94 KB) |  Abstract: n/a (This article belongs to the Section Molbank Section of Molecules, 1997-2001)
	M182 Ann Lam and Naseem Peerzada Short Note: N-Benzotriazol-1-yl-methyl-1,2,3,4-tetrahydro-b-carboline Molecules 2000, 5(12), M182; doi:10.3390/M182 Received: 29 September 2000 / Accepted: 16 November 2000 / Published: 25 December 2000 Show/Hide Abstract | Download PDF Full-text (89 KB) |  Abstract: n/a (This article belongs to the Section Molbank Section of Molecules, 1997-2001)
	M183 Abdullah Mohamed Asiri Short Note: 5-(Indol-3-yl)barbituric acid Molecules 2000, 5(12), M183; doi:10.3390/M183 Received: 1 October 2000 / Accepted: 16 November 2000 / Published: 25 December 2000 Show/Hide Abstract | Download PDF Full-text (87 KB) |  Abstract: n/a (This article belongs to the Section Molbank Section of Molecules, 1997-2001)
	M184 Abdullah Mohamed Asiri Short Note: E-(4-Methylbenzylidene)succinic anhydride Molecules 2000, 5(12), M184; doi:10.3390/M184 Received: 26 September 2000 / Accepted: 16 November 2000 / Published: 25 December 2000 Show/Hide Abstract | Download PDF Full-text (84 KB) |  Abstract: n/a (This article belongs to the Section Molbank Section of Molecules, 1997-2001)
	M185 Laura Jeffries and Eric Bosch Short Note: 1,4-Bis(2',4',6'-trimethylphenylethynyl)benzene Molecules 2000, 5(12), M185; doi:10.3390/M185 Received: 10 October 2000 / Accepted: 16 November 2000 / Published: 25 December 2000 Show/Hide Abstract | Download PDF Full-text (88 KB) |  Abstract: n/a (This article belongs to the Section Molbank Section of Molecules, 1997-2001)
	M186 My. Y. Ait Itto, A Hasnaoui, A. Riahi and A. Huet Short Note: 2-Methyl-5-methylmercapto-3-dimethylsulfoxymethine-7-phenyl-1,2,4-triazepine Molecules 2000, 5(12), M186; doi:10.3390/M186 Received: 20 September 2000 / Accepted: 16 November 2000 / Published: 25 December 2000 Show/Hide Abstract | Download PDF Full-text (89 KB) |  Abstract: n/a (This article belongs to the Section Molbank Section of Molecules, 1997-2001)
	M187 M. Daoubi, A. Benharref, E. Kossareva and M. Pierrot Short Note: 8a,9a-Epoxy Nor-31-lanosten-3-one Molecules 2000, 5(12), M187; doi:10.3390/M187 Received: 29 October 2000 / Accepted: 30 November 2000 / Published: 25 December 2000 Show/Hide Abstract | Download PDF Full-text (91 KB) |  Abstract: n/a (This article belongs to the Section Molbank Section of Molecules, 1997-2001)
	M188 M. Daoubi, A. Benharref, E. Kossareva and M. Pierrot Short Note: 8a,9a-Epoxy Nor-31-lanosten-3,4-olactone Molecules 2000, 5(12), M188; doi:10.3390/M188 Received: 29 October 2000 / Accepted: 30 November 2000 / Published: 25 December 2000 Show/Hide Abstract | Download PDF Full-text (92 KB) |  Abstract: n/a (This article belongs to the Section Molbank Section of Molecules, 1997-2001)
	M189 M. Daoubi, A. Benharref, A. Kenz and M. Pierrot Short Note: 2-Carbomethoxy-8a,9a-epoxy Nor-31-lanosten-3-enol Molecules 2000, 5(12), M189; doi:10.3390/M189 Received: 29 October 2000 / Accepted: 30 November 2000 / Published: 25 December 2000 Show/Hide Abstract | Download PDF Full-text (92 KB) |  Abstract: n/a (This article belongs to the Section Molbank Section of Molecules, 1997-2001)
	M190 Majid M. Heravi, Ghadir Rajabzadeh, Mohammad Rahimizadeh, Mehdi Bakavoli and Mitra Ghassemzadeh Short Note: 8-Dihydro-3-methyl-7-amino-[1,2,4]triazino[3,4-b][1,3,4]thiadiazine Molecules 2000, 5(12), M190; doi:10.3390/M190 Received: 23 October 2000 / Accepted: 30 November 2000 / Published: 25 December 2000 Show/Hide Abstract | Download PDF Full-text (86 KB) |  Abstract: n/a (This article belongs to the Section Molbank Section of Molecules, 1997-2001)
	M191 Gang-Chun Sun, Rui-Yun Guo, Jian-Qiang Qu, Liu-Fang Wang, Jun-Biao Chang and Rong-Feng Chen Short Note: E,E-1-(4-Bromophenyl)-5-(3-indolyl)-1,4-pentadien-3-one Molecules 2000, 5(12), M191; doi:10.3390/M191 Received: 20 September 2000 / Accepted: 30 November 2000 / Published: 25 December 2000 Show/Hide Abstract | Download PDF Full-text (92 KB) |  Abstract: n/a (This article belongs to the Section Molbank Section of Molecules, 1997-2001)
	M192 N. El Aouad, A. Benharref and R. Gree Short Note: 24,31-Epoxy-24-methyl-elemo-lanost-8,9-ene-3-ol Molecules 2000, 5(12), M192; doi:10.3390/M192 Received: 31 August 2000 / Accepted: 19 October 2000 / Published: 25 December 2000 Show/Hide Abstract | Download PDF Full-text (87 KB) |  Abstract: n/a (This article belongs to the Section Molbank Section of Molecules, 1997-2001)
	p. 1187-1193 Huan-Ming Chen and Ramachandra S. Hosmane Article: Synthesis of 1-(2'-Deoxy-ß-D-ribofuranosyl)-1H-imidazo[4,5-d]-pyridazine-4,7(5H,6H)-dione: A Potential Building Block for Antisense Applications Molecules 2000, 5(12), 1187-1193; doi:10.3390/51201187 Received: 28 August 2000; in revised form: 10 October 2000 / Accepted: 11 October 2000 / Published: 15 December 2000 Show/Hide Abstract | Download PDF Full-text (59 KB) Abstract: Synthesis of the title compound,1-(2'-deoxy-b-D-ribofuranosyl)-1H-imidazo[4,5-d]pyridazine-4,7(5H,6H)-dione (1), is reported. It was synthesized in five steps, commencing with methyl 1-(b-D-ribofuranosyl)imidazo-4,5-dicarboxylate (2). The 3',5'-hydroxyl groups of 2 were protected with a bis-silylating agent to form 3, which was then converted into the corresponding 2'-thionocarbonate derivative 5. The reduction of the latter with tri-n-butyltin hydride (to form 6), followed by silyl deprotection with tetra-nbutylammonium fluoride, afforded 7. Treatment of the latter with hydrazine hydrate yielded the target nucleoside 1.
	p. 1194-1200 Davood Habibi, Ezat Ghaemi and Davood Nematollahi Article: Synthesis Of Some Novel Silver-Cysteamine Complexes Molecules 2000, 5(12), 1194-1200; doi:10.3390/51201194 Received: 22 March 2000; in revised form: 14 June 2000 / Accepted: 28 August 2000 / Published: 15 December 2000 Show/Hide Abstract | Download PDF Full-text (93 KB) Abstract: The aim of this research was to synthesize some new silver-cysteamine complexes of potential biological interest. Reactions were carried out between silver nitrate and cysteamine (2-aminoethanethiol hydrochloride) under different conditions of pH and mole ratios of the metal (silver) to the ligand (cysteamine). Some novel silver-cysteamine complexes were made, and after characterization of the complexes by cyclic voltammetry, pH measurements, and microanalysis, it is now obvious that the mole ratio of the metal to the ligand in complexes is about four to three.
	p. 1201-1209 Janusz Nowicki Review: Synthesis of Jasmonoides from Furan Derivatives Molecules 2000, 5(12), 1201-1209; doi:10.3390/51201201 Received: 22 February 2000; in revised form: 21 July 2000 / Accepted: 22 August 2000 / Published: 15 December 2000 Show/Hide Abstract | Download PDF Full-text (78 KB) Abstract: This paper presents applicability of commonly available furan derivatives, like 2-methyl furan, furaldehyde and 5-methylfuraldehyde in syntheses of jasmanoides.
	p. 1210-1223 W. Fathalla, M. Čajan and P. Pazdera Article: Regioselectivity of Electrophilic Attack on 4-Methyl-1-Thioxo-1,2,4,5-Tetrahydro[1,2,4]Triazolo[4,3-A]Quinazolin-5-One Part 2: Reactions on Nitrogen Atom Molecules 2000, 5(12), 1210-1223; doi:10.3390/51201210 Received: 26 July 2000; in revised form: 20 October 2000 / Accepted: 10 November 2000 / Published: 15 December 2000 Show/Hide Abstract | Download PDF Full-text (260 KB) Abstract: The regioselectivity on a cyclic thioamide group towards different electrophiles was studied on the model compound 4-methyl-1-thioxo-1,2,4,5-tetrahydro[1,2,4]triazolo [4,3-a]quinazolin-5-one 1. The examined compound 1 reacts with alkyl halides, amines in the presence of formaldehyde, acyl halides and compounds having activated double bonds to afford the N-substituted derivatives 2, 3 and 6. The regioselective reactions on nitrogen atom are due to strong Coulombic attraction. The reaction of 1 with amines in the presence of hydrogen peroxide afforded the aminolysis product 4. Compounds 1-6 were identified by FTIR, 1H NMR, 13C NMR, and mass spectroscopy.
	p. 1224-1239 Mostafa M. Ismail, Mohamed Abass and Mohamed M. Hassan Article: Chemistry of Substituted Quinolinones. Part VI. Synthesis and Nucleophilic Reactions of 4-Chloro-8-methylquinolin-2(1H)-one and its Thione Analogue Molecules 2000, 5(12), 1224-1239; doi:10.3390/51201224 Received: 12 October 2000; in revised form: 2 November 2000 / Accepted: 9 November 2000 / Published: 18 December 2000 Show/Hide Abstract | Download PDF Full-text (165 KB) Abstract: The synthesis of 4-chloro-8-methylquinolin-2(1H)-one and its thione analogue is described. Some nucleophilic substitution reactions of the 4-chloro group were carried out to get new 4-substituted 2-quinolinones and quinolinethiones, such as 4-sulfanyl, hydrazino, azido and amino derivatives, which are of important synthetic use. The structure of the new compounds was established by their elemental analysis, IR and 1H-NMR spectra. Also the mass fragmentation pattern of some products is discussed.
	p. 1240-1243 Haixia Lin, Jinchang Ding, Xianten Chen and Ziyi Zhang Article: An Efficient Synthesis of 5-Alkoxycarbonyl-4-aryl-3,4-dihydropyrimidin-2(1H)-ones Catalyzed by KSF Montmorillonite Molecules 2000, 5(12), 1240-1243; doi:10.3390/51201240 Received: 21 September 2000; in revised form: 27 October 2000 / Accepted: 8 November 2000 / Published: 18 December 2000 Show/Hide Abstract | Download PDF Full-text (31 KB) Abstract: A mild and efficient catalytic method for synthesis of 5-alkoxycarbonyl-4-aryl-3,4- dihydropyrimidin-2(1H)-ones using KSF montmorillonite as catalyst is described.
	p. 1244-1250 Jeannine H. Powell, Edward M. Johnson II and Peter M. Gannett Article: Improvement of a Critical Intermediate Step in the Synthesis of a Nitroxide-Based Spin-Labeled Deoxythymidine Analog Molecules 2000, 5(12), 1244-1250; doi:10.3390/51201244 Received: 8 May 2000; in revised form: 13 November 2000 / Accepted: 14 November 2000 / Published: 18 December 2000 Show/Hide Abstract | Download PDF Full-text (68 KB) Abstract: Methods to reduce the carboxylic acid moiety in 3-carboxy-2,2,5,5-tetramethylpyrrolin-1-oxyl to an alcohol as an intermediate toward the corresponding aldehyde have been explored and an improved method has been developed.
	p. 1251-1258 Marcello Crucianelli, Natalia Battista, Pierfrancesco Bravo, Alessandro Volonterio and Matteo Zanda Article: Facile and Stereoselective Synthesis of Non-Racemic 3,3,3-Trifluoroalanine Molecules 2000, 5(12), 1251-1258; doi:10.3390/51201251 Received: 6 October 2000 / Accepted: 7 November 2000 / Published: 18 December 2000 Show/Hide Abstract | Download PDF Full-text (43 KB) Abstract: A highly stereoselective enantiodivergent synthesis of non-racemic 3,3,3-trifluoroalanine 7 is reported. The methodology is based on the reduction, by 9-BBN or DIBAH, of the chiral sulfinimine 3 derived from ethyl trifluoropyruvate, followed by acidic hydrolysis of the resulting diastereomeric sulfinamides 4 and 5.
	p. 1259-1264 Markus Kurz, Guannan Kuang and Peter A. Lohse Article: An Efficient Synthetic Strategy for the Preparation of Nucleic Acid-Encoded Peptide and Protein Libraries for In Vitro Evolution Protocols Molecules 2000, 5(12), 1259-1264; doi:10.3390/51201259 Received: 6 November 2000 / Accepted: 6 November 2000 / Published: 18 December 2000 Show/Hide Abstract | Download PDF Full-text (79 KB) Abstract: We describe an improved synthetic strategy for the preparation of nucleic acid encoded peptide and protein libraries. A solid-phase format was used to prepare and purify a novel type of mRNA-template for in vitro mRNA-protein fusion synthesis. The present protocol simplifies and accelerates the preparation of fusion libraries and should prove most useful for in vitro protein evolution procedures which involve repetitive cycles of fusion library preparation and selection.
	p. 1265-1280 Kendra L. Dombi and Clemens Richert Article: Relative Reactivities of Activated Carboxylic Acids in Amide-Forming Reactions Employed for the Synthesis of Tetraphenylporphyrin Libraries Molecules 2000, 5(12), 1265-1280; doi:10.3390/51201265 Received: 3 November 2000; in revised form: 1 January 2000 / Accepted: 17 November 2000 / Published: 18 December 2000 Show/Hide Abstract | Download PDF Full-text (224 KB) Abstract: Presented here is a method for rapidly testing the reactivity of carboxylic acids in amide-forming reactions. For this, a mixture of two acids, one a reference compound, and one acid whose reactivity is unknown, are coupled to an aminoacylated tetrakis(paminophenyl) porphyrin under typical peptide coupling conditions. The product distribution in the resulting library is analyzed via MALDI-TOF mass spectrometry to reveal the relative reactivity. This rapid reactivity test requires sub-nanomole quantities of acids, does not involve cleavage from a support or any potentially biasing work-up, and is automatable. Thus, it is well suited for testing building blocks for combinatorial syntheses. Further, it is demonstrated that step-wise coupling can produce near-statistically distributed libraries of porphyrins when acids of very different reactivity are employed.
	p. 1281-1286 Venkatapuram Padmavathi, Boggu Jagan Mohan Reddy, Akula Balaiah, Katta Venugopal Reddy and Dandu Bhaskar Reddy Article: Synthesis of Some Fused Pyrazoles and Isoxazoles Molecules 2000, 5(12), 1281-1286; doi:10.3390/51201281 Received: 16 September 2000; in revised form: 30 October 2000 / Accepted: 8 November 2000 / Published: 18 December 2000 Show/Hide Abstract | Download PDF Full-text (46 KB) Abstract: The α-keto methylene group in 3,5-diaryl-2-cyclohexenones 2 and 3,5-diarylcyclohexanones 8 have been used to obtain fused pyrazoles and isoxazoles. The new compounds were characterized by IR and 1H-NMR spectral data.
	p. 1287-1290 Fernando Echeverri, Winston Quiñones, Fernando Torres, Mario Duque and Rosendo Archbold Article: Synthesis of α-Hydroxyacetosyringone Molecules 2000, 5(12), 1287-1290; doi:10.3390/51201287 Received: 25 May 2000 / Accepted: 1 November 2000 / Published: 19 December 2000 Show/Hide Abstract | Download PDF Full-text (25 KB) Abstract: A phytoalexin from papaya fruit has been synthesized in four steps; this procedure involved a Pummerer- type reaction.
	p. 1291-1330 Spyros Spyroudis Review: Hydroxyquinones: Synthesis and Reactivity Molecules 2000, 5(12), 1291-1330; doi:10.3390/51201291 Received: 30 June 2000; in revised form: 1 October 2000 / Accepted: 6 October 2000 / Published: 20 December 2000 Show/Hide Abstract | Download PDF Full-text (343 KB) Abstract: Quinones having hydroxy groups directly attached to the quinone ring constitute a very interesting class of quinoid compounds. A great number of hydroxyquinones are found in nature and the majority of them exhibit unique biological activity. Their syntheses and their main reactivity patterns are reviewed in this paper.
	p. 1331-1371 Lech Skulski Review: Organic Iodine(I, III, and V) Chemistry: 10 Years of Development at the Medical University of Warsaw, Poland Molecules 2000, 5(12), 1331-1371; doi:10.3390/51201331 Received: 16 November 2000 / Accepted: 16 November 2000 / Published: 20 December 2000 Show/Hide Abstract | Download PDF Full-text (286 KB) Abstract: This review reports some novel (or considerably improved) methods for the synthesis of aromatic iodides, (dichloroiodo)arenes, (diacetoxyiodo)arenes, iodylarenes and diaryliodonium salts, as well as some facile, oxidative anion metatheses in crude diaryliodonium halides and, for comparison, potassium halides. All these new results were obtained in our laboratory over the past decade (1990-2000). A full list of our papers dealing with the organic iodine(I, III and V) chemistry, covering exlusively the aromatic derivatives, is also provided.
	p. 1372-1378 Michael Schmittel, David Rodríguez and Jens-Peter Steffen Article: Synthesis and Photochemical Cyclization of a Novel Enyne-Carbodiimide Molecules 2000, 5(12), 1372-1378; doi:10.3390/51201372 Received: 21 July 2000 / Accepted: 19 October 2000 / Published: 20 December 2000 Show/Hide Abstract | Download PDF Full-text (111 KB) Abstract: The triplet sensitized cyclization of enyne-carbodiimide 4 leads to efficient formation of indoloquinoline 5 with concomittant loss of a methyl group. The efficient loss of the methyl group was explained using AM1 semiempirical calculations.
	p. 1379-1385 Yijun Wang and Wenyuan Zhao Article: The Relationship between Redox Potentials and Torsional Angles in 4,4’-Dimethyl N, N’-Alkylidene 2,2’-Bipyridinium Salts Molecules 2000, 5(12), 1379-1385; doi:10.3390/51201379 Received: 27 January 2000; in revised form: 19 November 2000 / Accepted: 27 November 2000 / Published: 20 December 2000 Show/Hide Abstract | Download PDF Full-text (155 KB) Abstract: The redox potentials of 4,4’-dimethyl-N’N’-alkylidene bridged 2,2’-bipyridinium salts derivatives (DBPAs) can be controlled by changing the N, N’-alkylidene bridge length which changes the conformation of the DBPAs.. In this paper, the torsional angles between the two pyridine rings and the molecular energy of DBPAs are calculated using a PC based software package (AccuModel 1.2). The relationship between torsional angle and N, N’-alkylidene bridge length is discussed. The molecular energy of DBPAs can also be related to the torsional angles (or N, N’-alkylidene bridge size). Some DBPAs had been synthesized and their redox potentials measured. The difference in potential between ethylene and propylene bridged DBPAs is large enough to make a organic diode through bilayer modified electrode.
	p. 1386-1398 Tibor Gracza and Peter Szolcsányi Article: Study of Stereoselectivity in Organometallic Additions to 1,2-O-Isopropylidene-O-R-α-D-xylopentodialdo-1,4-furanose Molecules 2000, 5(12), 1386-1398; doi:10.3390/51201386 Received: 2 August 2000 / Accepted: 8 December 2000 / Published: 21 December 2000 Show/Hide Abstract | Download PDF Full-text (76 KB) Abstract: Diastereofacial selectivity of the addition of organometallic reagents to 1,2-Oisopropylidene-O-R-α-D-xylopentodialdo-1,4-furanoses (6) was studied.
	p. 1399-1407 Aušra Vektariene, Arvydas Juodviršis and Gytis Vektaris Article: Substitution Effects on Reactivity of N-Acyl-2-amino-2-desoxyglucopyranoses. Quantum Chemical Study Molecules 2000, 5(12), 1399-1407; doi:10.3390/51201399 Received: 22 November 2000 / Accepted: 28 November 2000 / Published: 21 December 2000 Show/Hide Abstract | Download PDF Full-text (132 KB) Abstract: Quantum mechanical calculations were carried out to study the molecular geometry and electronic structure of 2-amino-2-desoxyglucopyranose (AG) and the Nacetyl-, N-ethanoyl-, series of N-phthalimidoalkanoyl-AG. The total charge density, electrostatic potential, spatial distribution and positions of HOMO and LUMO of N-acyl-AGs with respect to their substitutes yield information on the reactivity of the molecules.
	p. 1408-1416 Han-Xun Wei, Subramanian Karur and Guigen Li Article: Halogeno Aldol Reaction of Ethyl Vinyl Ketone and Aldehydes Mediated by Titanium Tetrachloride Molecules 2000, 5(12), 1408-1416; doi:10.3390/51201408 Received: 29 August 2000; in revised form: 6 December 2000 / Accepted: 6 December 2000 / Published: 22 December 2000 Show/Hide Abstract | Download PDF Full-text (91 KB) Abstract: A three-component halogeno aldol reaction has been developed by using titanium tetrachloride as the halogen source as well as the Lewis acid mediator. The dehydration and elimination of hydrogen chloride were inhibited by conducting the reaction at 0 °C in dichloromethane or at room temperature with a shortened reaction time. Seven examples were examined, giving good to high yields (61 - 92%) and modest stereoselectivity (syn/anti: 2.2/1.0 - 8.4/1.0).
	p. 1417-1428 Davor Margetic, Martin R. Johnston and Ronald N. Warrener Article: High-level Computational Study of the Site-, Facial- and Stereoselectivities for the Diels-Alder Reaction Between o-Benzoquinone and Norbornadiene Molecules 2000, 5(12), 1417-1428; doi:10.3390/51201417 Received: 3 November 2000 / Accepted: 6 November 2000 / Published: 22 December 2000 Show/Hide Abstract | Download PDF Full-text (407 KB) Abstract: Ab initio and DFT quantum chemical calculations have been applied to a study of the Diels-Alder reaction of o-benzoquinone as diene and norbornadiene as dienophile. Transition states for the different reactions are located and activation energies estimated. The prefered exo-π-facial selectivity and exo,endo-stereoselectivity exhibited in this cycloaddition are readily predicted using RHF/3-21G or higher levels of calculations. Differences between experimentally observed results and calculations may be explained by the postulation of a second, nonconcerted biradical mechanism leading to formation of hetero Diels-Alder products.
	p. 1429-1438 Afaf H. El-masry, H. H. Fahmy and S. H. Ali Abdelwahed Article: Synthesis and Antimicrobial Activity of Some New Benzimidazole Derivatives Molecules 2000, 5(12), 1429-1438; doi:10.3390/51201429 Received: 10 January 2000; in revised form: 5 August 2000 / Accepted: 22 December 2000 / Published: 22 December 2000 Show/Hide Abstract | Download PDF Full-text (117 KB) Abstract: Reaction of 3-(2-methylbenzimidazol-1-yl)propanoic acid hydrazide (1) with CS2/KOH gave oxadiazole 2 which underwent Mannich reaction to give 3. Compound 2 was treated with hydrazine hydrate to give triazole 4 which was treated with both aldehydes and acetic anhydride to give 5 and 6, respectively. Carbohydrazide 1 was reacted with ethyl acetoacetate, acetylacetone and aldehydes to give 7, 8 and 9, respectively. Cyclocondensation of 9 with thioglycolic and thiolactic acids gave 10 and 11, respectively. Some of these compounds showed potential antimicrobial activities.
	p. 1439-1460 Bang Luu, José-Luis González De Aguilar and Céline Girlanda-Junges Review: Cyclohexenonic Long-Chain Fatty Alcohols as Neuronal Growth Stimulators Molecules 2000, 5(12), 1439-1460; doi:10.3390/51201439 Received: 13 November 2000; in revised form: 7 December 2000 / Accepted: 7 December 2000 / Published: 22 December 2000 Show/Hide Abstract | Download PDF Full-text (231 KB) Abstract: Neurotrophic factors play an important role in the development and maintenance of neurons, thus providing a suitable therapeutic approach for the treatment of neurodegenerative diseases. However, their clinical use has revealed problematic because of a number of technical and biological disadvantages. Among the different strategies proposed to overcome such difficulties, the search for non-peptide substances with neurotrophic potential is giving promising results. Here we will expose major findings in this field, drawing special attention to cyclohexenonic long-chain fatty alcohols, a novel family of compounds that promote neuronal survival and neurite outgrowth.
	p. 1461-1462 Oleg A. Golubchikov and Tatjana A. Ageeva Meeting Report: Symposium on Applications of Porphyrins in Medicine and the Fourth School for Young Scientists on the Chemistry of Porphyrins and Related Compounds Ivanovo 2000 Molecules 2000, 5(12), 1461-1462; doi:10.3390/51201461 Published: 31 December 2000 Show/Hide Abstract | Download PDF Full-text (375 KB) Abstract: n/a
	p. 1463-1514 Andrei F. Mironov Abstract: Chlorins and Porphyrins with Six-Membered Exocyclic Rings Molecules 2000, 5(12), 1463-1514; doi:10.3390/51201463 Published: 31 December 2000 Show/Hide Abstract | Download PDF Full-text (375 KB) Abstract: n/a
	p. 1515-1516 Shu-Kun Lin New Book Received: Thermodynamics and Kinetics for the Biological Sciences. By Gordon G. Hammes Molecules 2000, 5(12), 1515-1516; doi:10.3390/51201515 Received: 22 December 2000 / Published: 31 December 2000 Show/Hide Abstract | Download PDF Full-text (23 KB) Abstract: n/a
	p. 1517 Shu-Kun Lin New Book Received: Physical Biochemistry: Principles and Applications. By David Sheehan Molecules 2000, 5(12), 1517; doi:10.3390/51201517 Received: 22 December 2000 / Published: 31 December 2000 Show/Hide Abstract | Download PDF Full-text (9 KB) Abstract: n/a
	p. 1518-1519 Shu-Kun Lin New Book Received: Combinatorial Chemistry. By Willi Bannwarth and Eduard Felder Molecules 2000, 5(12), 1518-1519; doi:10.3390/51201518 Received: 22 December 2000 / Published: 31 December 2000 Show/Hide Abstract | Download PDF Full-text (23 KB) Abstract: n/a
	p. 1520-1521 Shu-Kun Lin New Book Received: Carbohydrates in Chemistry and Biology. By Ernst, Beat / Hart, Gerald W. / Sinaÿ, Pierre Molecules 2000, 5(12), 1520-1521; doi:10.3390/51201520 Received: 22 December 2000 / Published: 31 December 2000 Show/Hide Abstract | Download PDF Full-text (23 KB) Abstract: n/a
	p. 1522-1523 Shu-Kun Lin New Book Received: Lewis Acids in Organic Synthesis. By Yamamoto, Hisashi Molecules 2000, 5(12), 1522-1523; doi:10.3390/51201522 Received: 22 December 2000 / Published: 31 December 2000 Show/Hide Abstract | Download PDF Full-text (24 KB) Abstract: n/a
	p. 1524-1525 Shu-Kun Lin New Book Received: Pharmaceuticals: Classes, Therapeutic Agents, Areas of Application. By McGuire, John L. Molecules 2000, 5(12), 1524-1525; doi:10.3390/51201524 Received: 22 December 2000 / Published: 31 December 2000 Show/Hide Abstract | Download PDF Full-text (25 KB) Abstract: n/a
	p. 1526-1527 Shu-Kun Lin New Book Received: Molecular Diversity in Drug Design. Edited by Philip M. Dean Molecules 2000, 5(12), 1526-1527; doi:10.3390/51201526 Received: 22 December 2000 / Published: 31 December 2000 Show/Hide Abstract | Download PDF Full-text (10 KB) Abstract: n/a
	p. 1528-1529 Shu-Kun Lin New Book Received: Advanced Organic Chemistry. Part A: Structure and Mechanisms. Fourth Edition. by Francis A. Carey Molecules 2000, 5(12), 1528-1529; doi:10.3390/51201528 Received: 22 December 2000 / Published: 31 December 2000 Show/Hide Abstract | Download PDF Full-text (10 KB) Abstract: n/a
	p. 1530-1531 Shu-Kun Lin New Book Received: Synthetic Organic Sonochemistry. Jean-Louis Luche Molecules 2000, 5(12), 1530-1531; doi:10.3390/51201530 Received: 22 December 2000 / Published: 31 December 2000 Show/Hide Abstract | Download PDF Full-text (10 KB) Abstract: n/a
	p. 1532 Shu-Kun Lin New Book Received: Progress in Drug Research. By Jucker, E. Molecules 2000, 5(12), 1532; doi:10.3390/51201532 Received: 22 December 2000 / Published: 31 December 2000 Show/Hide Abstract | Download PDF Full-text (9 KB) Abstract: n/a
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