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Table of Contents

Molecules, Volume 3, Issue 3 (March 1998), Pages 51-131, M49-M73

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	M49 Tellez Nohemi, Torrenegra Ruben, Pedroyo Julio and Gray Alexander Short Note: Cycloartan-2b-2-methyl ButanoateIsolated from Genus Espeletia (Asteraceae) Molecules 1998, 3(3), M49; doi:10.3390/M49 Received: 12 February 1998 / Published: 4 March 1998 Show/Hide Abstract | Download PDF Full-text (117 KB) |  Abstract: n/a (This article belongs to the Section Molbank Section of Molecules, 1997-2001)
	M50 Bohumil Steiner, Jan Gajdos and Miroslav Koos Short Note: Methyl 2,3-O-Isopropylidene-a-D-mannofuranoside 5,6-Carbonate Molecules 1998, 3(3), M50; doi:10.3390/M50 Received: 16 February 1998 / Published: 4 March 1998 Show/Hide Abstract | Download PDF Full-text (91 KB) |  Abstract: n/a (This article belongs to the Section Molbank Section of Molecules, 1997-2001)
	M51 Martin J. Stoermer and John T. Pinhey Short Note: Ethyl (E)-3-methyl-5-phenyl-2-pentenoate Molecules 1998, 3(3), M51; doi:10.3390/M51 Received: 27 February 1998 / Published: 6 March 1998 Show/Hide Abstract | Download PDF Full-text (119 KB) |  Abstract: n/a (This article belongs to the Section Molbank Section of Molecules, 1997-2001)
	M52 Martin J. Stoermer and John T. Pinhey Short Note: Ethyl (Z)-3-Methyl-5-phenyl-2-pentenoate Molecules 1998, 3(3), M52; doi:10.3390/M52 Received: 27 February 1998 / Published: 6 March 1998 Show/Hide Abstract | Download PDF Full-text (115 KB) |  Abstract: n/a (This article belongs to the Section Molbank Section of Molecules, 1997-2001)
	M53 Martin J. Stoermer and John T. Pinhey Short Note: (E)-3-Methyl-5-phenyl-2-pentenoic Acid Molecules 1998, 3(3), M53; doi:10.3390/M53 Received: 27 February 1998 / Published: 6 March 1998 Show/Hide Abstract | Download PDF Full-text (105 KB) |  Abstract: n/a (This article belongs to the Section Molbank Section of Molecules, 1997-2001)
	M54 Martin J. Stoermer and John T. Pinhey Short Note: (Z)-3-Methyl-5-phenyl-2-pentenoic Acid Molecules 1998, 3(3), M54; doi:10.3390/M54 Received: 27 February 1998 / Published: 6 March 1998 Show/Hide Abstract | Download PDF Full-text (102 KB) |  Abstract: n/a (This article belongs to the Section Molbank Section of Molecules, 1997-2001)
	M55 Martin J. Stoermer and John T. Pinhey Short Note: 2(S,R),3(R,S)-2,3-Dibromo-3-methyl-5-phenyl-2-pentanoic Acid Molecules 1998, 3(3), M55; doi:10.3390/M55 Received: 27 February 1998 / Published: 6 March 1998 Show/Hide Abstract | Download PDF Full-text (103 KB) |  Abstract: n/a (This article belongs to the Section Molbank Section of Molecules, 1997-2001)
	M56 Martin J. Stoermer and John T. Pinhey Short Note: 2(R,S),3(S,R)-2,3-Dibromo-3-methyl-5-phenyl-2-pentanoic Acid Molecules 1998, 3(3), M56; doi:10.3390/M56 Received: 27 February 1998 / Published: 6 March 1998 Show/Hide Abstract | Download PDF Full-text (103 KB) |  Abstract: n/a (This article belongs to the Section Molbank Section of Molecules, 1997-2001)
	M57 Martin J. Stoermer and John T. Pinhey Short Note: (Z)-1-Bromo-2-methyl-4-phenyl-1-butene Molecules 1998, 3(3), M57; doi:10.3390/M57 Received: 27 February 1998 / Published: 6 March 1998 Show/Hide Abstract | Download PDF Full-text (102 KB) |  Abstract: n/a (This article belongs to the Section Molbank Section of Molecules, 1997-2001)
	M58 Martin J. Stoermer and John T. Pinhey Short Note: (E)-1-Bromo-2-methyl-4-phenyl-1-butene Molecules 1998, 3(3), M58; doi:10.3390/M58 Received: 27 February 1998 / Published: 6 March 1998 Show/Hide Abstract | Download PDF Full-text (104 KB) |  Abstract: n/a (This article belongs to the Section Molbank Section of Molecules, 1997-2001)
	M59 Martin J. Stoermer and John T. Pinhey Short Note: Ethyl 3-Hydroxy-3-methyl-5-phenylpentanoate Molecules 1998, 3(3), M59; doi:10.3390/M59 Received: 27 February 1998 / Published: 6 March 1998 Show/Hide Abstract | Download PDF Full-text (97 KB) |  Abstract: n/a (This article belongs to the Section Molbank Section of Molecules, 1997-2001)
	M60 Martin J. Stoermer and John T. Pinhey Short Note: Ethyl 3-Acetoxy-3-methyl-5-phenylpentanoate Molecules 1998, 3(3), M60; doi:10.3390/M60 Received: 27 February 1998 / Published: 6 March 1998 Show/Hide Abstract | Download PDF Full-text (98 KB) |  Abstract: n/a (This article belongs to the Section Molbank Section of Molecules, 1997-2001)
	M61 Martin J. Stoermer and John T. Pinhey Short Note: 3-Hydroxy-3-methyl-5-phenylpentanoic Acid Molecules 1998, 3(3), M61; doi:10.3390/M61 Received: 27 February 1998 / Published: 6 March 1998 Show/Hide Abstract | Download PDF Full-text (97 KB) |  Abstract: n/a (This article belongs to the Section Molbank Section of Molecules, 1997-2001)
	M62 Martin J. Stoermer and John T. Pinhey Short Note: Ethyl (E)-2-Methyl-5-phenyl-2-pentenoate Molecules 1998, 3(3), M62; doi:10.3390/M62 Received: 27 February 1998 / Published: 6 March 1998 Show/Hide Abstract | Download PDF Full-text (116 KB) |  Abstract: n/a (This article belongs to the Section Molbank Section of Molecules, 1997-2001)
	M63 Martin J. Stoermer and John T. Pinhey Short Note: Ethyl (Z)-2-Methyl-5-phenyl-2-pentenoate Molecules 1998, 3(3), M63; doi:10.3390/M63 Received: 27 February 1998 / Published: 6 March 1998 Show/Hide Abstract | Download PDF Full-text (112 KB) |  Abstract: n/a (This article belongs to the Section Molbank Section of Molecules, 1997-2001)
	M64 Martin J. Stoermer and John T. Pinhey Short Note: (E)-2-Methyl-5-phenyl-2-pentenoic Acid Molecules 1998, 3(3), M64; doi:10.3390/M64 Received: 27 February 1998 / Published: 6 March 1998 Show/Hide Abstract | Download PDF Full-text (104 KB) |  Abstract: n/a (This article belongs to the Section Molbank Section of Molecules, 1997-2001)
	M65 Martin J. Stoermer and John T. Pinhey Short Note: 2,3-Dibromo-2-methyl-5-phenylpentanoic Acid Molecules 1998, 3(3), M65; doi:10.3390/M65 Received: 27 February 1998 / Published: 6 March 1998 Show/Hide Abstract | Download PDF Full-text (96 KB) |  Abstract: n/a (This article belongs to the Section Molbank Section of Molecules, 1997-2001)
	M66 Martin J. Stoermer and John T. Pinhey Short Note: (Z)-2-Bromo-5-phenyl-2-pentene Molecules 1998, 3(3), M66; doi:10.3390/M66 Received: 27 February 1998 / Published: 6 March 1998 Show/Hide Abstract | Download PDF Full-text (103 KB) |  Abstract: n/a (This article belongs to the Section Molbank Section of Molecules, 1997-2001)
	M67 Martin J. Stoermer and John T. Pinhey Short Note: Tributyl-[(Z)-5-phenyl-2-penten-2-yl]stannane Molecules 1998, 3(3), M67; doi:10.3390/M67 Received: 27 February 1998 / Published: 6 March 1998 Show/Hide Abstract | Download PDF Full-text (102 KB) |  Abstract: n/a (This article belongs to the Section Molbank Section of Molecules, 1997-2001)
	M68 Martin J. Stoermer and John T. Pinhey Short Note: [(Z)-5-Phenyl-2-penten-2-yl]mercury Bromide Molecules 1998, 3(3), M68; doi:10.3390/M68 Received: 27 February 1998 / Published: 6 March 1998 Show/Hide Abstract | Download PDF Full-text (99 KB) |  Abstract: n/a (This article belongs to the Section Molbank Section of Molecules, 1997-2001)
	M69 Martin J. Stoermer and John T. Pinhey Short Note: [(Z)-5-Phenyl-2-penten-2-yl]mercury Acetate Molecules 1998, 3(3), M69; doi:10.3390/M69 Received: 27 February 1998 / Published: 6 March 1998 Show/Hide Abstract | Download PDF Full-text (101 KB) |  Abstract: n/a (This article belongs to the Section Molbank Section of Molecules, 1997-2001)
	M70 Martin J. Stoermer and John T. Pinhey Short Note: bis-[(Z)-5-Phenyl-2-penten-2-yl]mercury Molecules 1998, 3(3), M70; doi:10.3390/M70 Received: 27 February 1998 / Published: 6 March 1998 Show/Hide Abstract | Download PDF Full-text (103 KB) |  Abstract: n/a (This article belongs to the Section Molbank Section of Molecules, 1997-2001)
	M71 Martin J. Stoermer and John T. Pinhey Short Note: Ethyl (E)-3-(2-Methoxyphenyl)-2-butenoate Molecules 1998, 3(3), M71; doi:10.3390/M71 Received: 27 February 1998 / Published: 6 March 1998 Show/Hide Abstract | Download PDF Full-text (119 KB) |  Abstract: n/a (This article belongs to the Section Molbank Section of Molecules, 1997-2001)
	M72 Martin J. Stoermer and John T. Pinhey Short Note: Ethyl (Z)-3-(2-Methoxyphenyl)-2-butenoate Molecules 1998, 3(3), M72; doi:10.3390/M72 Received: 27 February 1998 / Published: 6 March 1998 Show/Hide Abstract | Download PDF Full-text (116 KB) |  Abstract: n/a (This article belongs to the Section Molbank Section of Molecules, 1997-2001)
	M73 Martin J. Stoermer and John T. Pinhey Short Note: (E)-3-(2-Methoxyphenyl)-2-butenoic Acid Molecules 1998, 3(3), M73; doi:10.3390/M73 Received: 27 February 1998 / Published: 6 March 1998 Show/Hide Abstract | Download PDF Full-text (106 KB) |  Abstract: n/a (This article belongs to the Section Molbank Section of Molecules, 1997-2001)
	p. 51-59 Jaana K. Karjalainen, Osmo E.O. Hormi and David C. Sherrington Article: Efficient Polymer-Supported Sharpless Alkene Epoxidation Catalyst Molecules 1998, 3(3), 51-59; doi:10.3390/30300051 Received: 11 January 1998 / Accepted: 13 February 1998 / Published: 17 February 1998 Show/Hide Abstract | Download PDF Full-text (46 KB) Abstract: Homogeneous linear poly(tartrate ester) ligands provide high chemical yields and enantiomeric excesses in the epoxidation of trans-hex-2-en-1-ol using Ti(OPri)4-tert-butyl hydroperoxide. Branched poly(tartrate ester) can be use as heterogeneous ligands in the epoxidation of trans-hex-2-en-1-ol using Ti(OPri)4-tert-butyl hydroperoxide. Removal and recovery of the polymer catalyst is a simple filtration at the end of reactions.
	p. 60-63 Ana M. T. D. P. V. Cabral, António M. D'A Rocha Gonsalves and Teresa M. V. D. Pinho e Melo Article: Intramolecular Cycloaddition of Imines of Cysteine Derivatives Molecules 1998, 3(3), 60-63; doi:10.3390/30300060 Received: 3 December 1997 / Accepted: 3 February 1998 / Published: 18 February 1998 Show/Hide Abstract | Download PDF Full-text (22 KB) Abstract: Azomethine ylides were generated from Schiffs bases of S-allylcysteine methyl ester and their intramolecular 1,3-dipolar cycloadditions were studied. These reactions led to the synthesis of thieno[3,4-b]pyrrole derivatives in good yield.
	p. 64-70 D. Craig and M. L. Marin Article: An Asymmetric Synthetic Approach to the A-ring of the Taxol Family of Anti-Cancer Compounds Molecules 1998, 3(3), 64-70; doi:10.3390/30300064 Received: 10 January 1998 / Accepted: 16 February 1998 / Published: 20 February 1998 Show/Hide Abstract | Download PDF Full-text (52 KB) Abstract: A synthetic route developed for the preparation of the A-ring of Taxol family of molecules is reported. By means of an intramolecular Diels-Alder reaction an asymmetric approach to this ring has been accomplished. Also, initial studies to prepare the A ring using an intramolecular Diels-Alder reaction have been successful.
	p. 71-79 M. E. A. Zaki Article: Synthesis of Novel Fused Heterocycles Based on Pyrano[2,3-c]pyrazole Molecules 1998, 3(3), 71-79; doi:10.3390/30300071 Received: 30 October 1997 / Accepted: 18 January 1998 / Published: 23 February 1998 Show/Hide Abstract | Download PDF Full-text (50 KB) Abstract: 3-Substituted 1,2,4-triazole derivatives (5, 9, 13, 16b, 19), pyrimidinium salts (21), triazines (24), and aryl methylene hydrazono pyrazolopyrano-pyrimidine (27a,b) which are rearranged in basic medium to 30a,b, were afforded via the reaction of 6-amino 1,4,5,6-tetrahydro-5-imino-3-methyl-1-phenyl-4 (pchlorophenyl) pyrazolo [4', 3' : 5,6]-pyrano [2,3-d] pyrimidine (3) with different reagents.
	p. 80-87 Tuvia Sheradsky and Elliad R. Silcoff Article: Synthesis of (2R,5R)-2-Amino-5-Hydroxyhexanoic Acid by Intramolecular Cycloaddition Molecules 1998, 3(3), 80-87; doi:10.3390/30300080 Received: 15 January 1998 / Accepted: 23 February 1998 / Published: 24 February 1998 Show/Hide Abstract | Download PDF Full-text (43 KB) Abstract: The title compound was synthesized from sorbic acid by an eight step sequence. The key step was the stereospecific intramolecular Diels-Alder reaction of the acylnitroso derivative of N-sorbyl-L-proline (5). L-Proline served as a temporary tether which directed both the stereochemistry and the regiochemistry of the cycloaddition.
	p. 88-93 Didier Villemin, Benoit Martin and Nathalie Bar Article: Application of Microwave in Organic Synthesis. Dry Synthesis of 2-Arylmethylene-3(2)-naphthofuranones Molecules 1998, 3(3), 88-93; doi:10.3390/30300088 Received: 19 February 1998 / Accepted: 3 March 1998 / Published: 5 March 1998 Show/Hide Abstract | Download PDF Full-text (55 KB) Abstract: 3(2)-Naphthofuranone (1) was condensed in the presence of Al2O3-KF with aromatic aldehydes (4) to give arylidenenaphthofuranones (5a-f) without solvent under focused microwave irradiation.
	p. 94-99 Henry S. Rzepa Review: Elemental and Molecular Heritage: An Internet-based Display Molecules 1998, 3(3), 94-99; doi:10.3390/30300094 Received: 3 March 1998 / Accepted: 6 March 1998 / Published: 9 March 1998 Show/Hide Abstract | Download PDF Full-text (414 KB) Abstract: The background to a Web page describing elemental and molecular heritage at Imperial College chemistry department is described. Photographs are shown of the original samples of elemental bromine and crystalline silicon, and molecular ferrocene and mauveine. 3D "Hyperactive" models of these systems are shown, together with a recently discovered heterocyclic systems scorpionine, which like mauveine is made by a deceptively simple chemical synthesis.
	p. 100-106 Anatoly D. Shutalev, Ekaterina A. Kishko, Natalie V. Sivova and Aleksei Yu. Kuznetsov Article: A New Convenient Synthesis of 5-Acyl-1,2,3,4-tetrahydropyrimidine-2-thiones/ones Molecules 1998, 3(3), 100-106; doi:10.3390/30300100 Received: 28 January 1998 / Accepted: 18 February 1998 / Published: 9 March 1998 Show/Hide Abstract | Download PDF Full-text (41 KB) Abstract: An efficient one-pot synthesis of 5-acyl-1,2,3,4-tetrahydropyrimidine-2-thiones/ones is described. The synthesis is based on the reaction of readily available α-tosyl substituted thioureas or ureas with enolates of β-oxoesters or 1,3-dicarbonyl compounds followed by acid-catalyzed dehydration of the obtained 5-acyl-4-hydroxyhexahydropyrimidine-2-thiones/ones.
	p. 107-119 Joachim Demnitz, Luigi LaVecchia, Edmond Bacher, Thomas H. Keller, Thomas Müller, Friedrich Schürch, Hans-Peter Weber and Esteban Pombo-Villar Article: Enantiodivergent Synthesis of (R)- and (S)-Rolipram Molecules 1998, 3(3), 107-119; doi:10.3390/30300107 Received: 2 November 1997 / Accepted: 23 February 1998 / Published: 10 March 1998 Show/Hide Abstract | Download PDF Full-text (466 KB) Abstract: Both enantiomers of rolipram (1) have been prepared in large quantity from a common intermediate rac-3-(3’-cyclopentyloxy-4’-methoxy)phenyl-4-nitro butyric acid (6), which was resolved by way of the two readily separable diastereoisomeric amides obtained with (S)-(-)-phenylethylamine. Reduction of the nitro group and intramolecular transamidation gave (R)-(-)-1 and (S)-(+)-1, respectively. CD spectra of both enantiomers of rolipram are reported and discussed. Both enantiomers of rolipram presented the same potency of inhibitory activity against recombinant cyclic-AMP-selective phosphodiesterase (PDE4) subtypes.
	p. 120-131 Margita Lacova, Hafez M. El-Shaaer, Dusan Loos, Maria Matulova, Jarmila Chovancova and Mikulas Furdik Article: Evaluation of Effect of Microwave Irradiation on Syntheses and Reactions of Some New 3-Acyl-methylchromones Molecules 1998, 3(3), 120-131; doi:10.3390/30300120 Received: 16 January 1998 / Accepted: 17 February 1998 / Published: 10 March 1998 Show/Hide Abstract | Download PDF Full-text (68 KB) Abstract: The 3-Acyl-2-R-methylchromones (R = H, ArO, C6H4(CO)2N) were prepared in good yields by different methods from 2-hydroxyaroylacetone derivatives. Some subsequent reactions of these compounds with hydroxylamine and 3-formylchromones are described. The effect of microwave irradation on some condensation reactions was studied.
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