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Molbank, Volume 2003, Issue 3 (June 2003) – 15 articles

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85 KiB  
Short Note
Methyl 2-Amino-5,6-dihydro-4H-cyclopenta[b]thiophene-3-carboxylate
by Abdullah Mohamed Asiri
Molbank 2003, 2003(3), M341; https://doi.org/10.3390/M341 - 21 Jun 2003
Cited by 41 | Viewed by 3513
Abstract
To a mixture contaning cyclopentanone (8.49 g, 0.1 mol), methyl cyanoacetate (10.0 g, 0.1 mol) and sulfur (3.21 g, 0.1 mol) in methanol (20 ml), morpholine (10 ml) was added dropwise over a period of 30 minutes at 35 °C.[...] Full article
85 KiB  
Short Note
2-Ethyl 4-methyl 5-amino-3-methylthiophene-2,4-dicarboxylate
by Abdullah Mohamed Asiri
Molbank 2003, 2003(3), M340; https://doi.org/10.3390/M340 - 21 Jun 2003
Cited by 41 | Viewed by 3444
Abstract
To a mixture contaning ethyl acetoacetate (13.02 g, 0.1 mol), methyl cyanoacetate (3.21 g, 0.1 mol) and sulfur (3.21 g, 0.1 mol) in ethanol ( 20 ml), morpholine (10 ml) was added dropwise over a period of 30 minutes at 35°C.[...] Full article
86 KiB  
Short Note
1,2-Bis(p-phenyl-carbamic Acid Phenyl Ester)ethane
by Elena Scortanu and Adrian A. Caraculacu
Molbank 2003, 2003(3), M333; https://doi.org/10.3390/M333 - 08 Jun 2003
Cited by 41 | Viewed by 2941
Abstract
The experimental procedure follows the general synthesis by the addition reaction of isocyanates with phenols [1, 2].[...] Full article
86 KiB  
Short Note
1,2-Bis(p-phenylcarbamoyl-oxy-amino-cyclohexylidene)ethane
by Elena Scortanu and Adrian A. Caraculacu
Molbank 2003, 2003(3), M332; https://doi.org/10.3390/M332 - 08 Jun 2003
Cited by 41 | Viewed by 2435
Abstract
The experimental procedure follows the general synthesis of blocked isocyanates [1, 2].[...] Full article
91 KiB  
Short Note
1,2-Bis(p-phenyl-thiocarbamic Acid-S-benzothiazol-2-yl-ester)ethane and 1-(o-Phenyl-thiocarbamic Acid-S-benzothiazol-2-yl-ester)-2-(p-phenyl-thiocarbamic Acid-S-benzothiazol-2-yl-ester)ethane
by Elena Scortanu and Adrian A. Caraculacu
Molbank 2003, 2003(3), M331; https://doi.org/10.3390/M331 - 08 Jun 2003
Cited by 41 | Viewed by 3010
Abstract
The experimental procedure follows the general synthesis of blocked isocyanates [1, 2].[...] Full article
93 KiB  
Short Note
1,2-Bis(2-oxo-azepane-1-carboxylic acid-p-phenyl-amide)ethane and 1-(2-Oxo-azepane-1-carboxylic Acid-o-phenyl-amide)-2-(2-oxo-azepane-1-carboxylic acid-p-phenyl-amide)ethane
by Elena Scortanu and Adrian A. Caraculacu
Molbank 2003, 2003(3), M330; https://doi.org/10.3390/M330 - 08 Jun 2003
Cited by 41 | Viewed by 2749
Abstract
The experimental procedure follows the general synthesis by the addition reaction of isocyanates with e-caprolactam (CPL) [1, 2].[...] Full article
113 KiB  
Short Note
N-[5-(3-Phenylpropionyl)-1H-pyrrole-2-carbonyl]-L-proline Methyl Ester
by Derek C. Martyn and Andrew D. Abell
Molbank 2003, 2003(3), M338; https://doi.org/10.3390/M338 - 01 Jun 2003
Cited by 41 | Viewed by 2415
Abstract
To a stirring solution of the pyrrole carboxylic acid 1 [1] (100 mg, 0.41 mmol, 1 equiv) and L-proline methyl ester hydrochloride (75 mg, 0.45 mmol, 1.1 equiv) in dry dichloromethane (6 mL) at r.t. under an inert atmosphere were added 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride [...] Read more.
To a stirring solution of the pyrrole carboxylic acid 1 [1] (100 mg, 0.41 mmol, 1 equiv) and L-proline methyl ester hydrochloride (75 mg, 0.45 mmol, 1.1 equiv) in dry dichloromethane (6 mL) at r.t. under an inert atmosphere were added 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (102 mg, 0.53 mmol, 1.3 equiv) and 1-hydroxybenzotriazole hydrate (83 mg, 0.62 mmol, 1.5 equiv) [2].[...] Full article
85 KiB  
Short Note
(R,S)-Benzyl 5-(1-Hydroxyethyl)-1H-pyrrole-2-carboxylate
by Derek C. Martyn and Andrew D. Abell
Molbank 2003, 2003(3), M337; https://doi.org/10.3390/M337 - 01 Jun 2003
Cited by 41 | Viewed by 2492
Abstract
A stirred solution of the pyrrole benzyl ester 1 [1] (1.20 g, 5.23 mmol, 1 equiv) in dry tetrahydrofuran (100 mL) under an inert atmosphere was cooled to -23°C (dry ice/carbon tetrachloride).[...] Full article
79 KiB  
Short Note
Acetic Acid 3-(2-Chloro-benzoylamino)-8-methyl-8-aza-bicyclo[3.2.1]oct-6-yl Ester
by Yin-Yao Niu and Yang Lu
Molbank 2003, 2003(3), M336; https://doi.org/10.3390/M336 - 01 Jun 2003
Cited by 41 | Viewed by 2745
Abstract
Acetic acid 3-(2-chloro-benzoylamino)-8-methyl-8-aza-bicyclo[3.2.1]oct-6-yl ester is a candidate for the study of muscarinic cholinergic agonist and the structure-activity relationship [1].[...] Full article
92 KiB  
Short Note
Phenylacetic Acid (3S,6S)-6-Acetoxy-8-methyl-8-aza-bicyclo[3.2.1]oct-3-yl Ester
by Yin-Yao Niu and Yang Lu
Molbank 2003, 2003(3), M335; https://doi.org/10.3390/M335 - 01 Jun 2003
Cited by 41 | Viewed by 2791
Abstract
The fact that the configuration of derivatives of acetic acid 8-methyl-8-aza-bicyclo[3.2.1]oct-6-yl ester was considered having significant influence on the muscarinic activity [1] prompted us to synthesize the chiral compounds with the skeleton in order to study the structure-activity relationship.[...] Full article
127 KiB  
Short Note
3-Benzoylacrylonitrile [(E)-4-Oxo-4-phenyl-2-butenenitrile]
by Thies Thiemann and Masataka Watanabe
Molbank 2003, 2003(3), M334; https://doi.org/10.3390/M334 - 01 Jun 2003
Cited by 41 | Viewed by 2590
Abstract
3-Benzoylacrylonitrile (3) has been prepared previously. Its preparations [1-4] however, are usually multistep reactions, and most of the sequences necessitate the use of KCN.[...] Full article
105 KiB  
Short Note
5-{4-itro-3-[1-(toluene-4-sulphonyl)-hexyl]-phenyl}-10,15,20-triphenylporphyrin Zinc(II)
by Stanislaw Ostrowski and Agnieszka Mikus
Molbank 2003, 2003(3), M329; https://doi.org/10.3390/M329 - 03 May 2003
Cited by 41 | Viewed by 1852
Abstract
As part of ongoing research programme we synthesised the title meso-tetraarylporphyrin derivative possessing a high degree of complexity in one phenyl ring.[...] Full article
157 KiB  
Short Note
3b-O-trans-Ferulyl-2a,19a-dihydroxy-urs-12-en-28-oic Acid, A ew Pentacyclic Triterpene Ester from Rubus aleaefolius, Which Inhibits Mammalian Cell Cycle at G2/M phase
by Qing-Chun Zhao, Cheng-Bin Cui, Bing Cai, Xin-Sheng Yao and Hiroyouki Osada
Molbank 2003, 2003(3), M328; https://doi.org/10.3390/M328 - 03 May 2003
Cited by 41 | Viewed by 3707
Abstract
Continuing our studies on bioactive constituents of Rubus aleaefolius Poir. (family Rosacae) [1,2], we report here a new pentacyclic triterpene ester, 3b-O-trans-ferulyl-2a,19a-dihydroxy-urs-12-en- 28-oic acid (1) from Rubus aleaefolius Poir., which inhibits mammalian cell cycle at G2/M phase.[...] Full article
143 KiB  
Short Note
3a,23-O-Isopropylidenyl-2a,19a-dihydroxy-urs-12-en-28-oic acid, A New Pentacyclic Triterpene Isolated from Rubus aleaefolius as a New Cell Cycle Inhibitor
by Qing-Chun Zhao, Cheng-Bin Cui, Bing Cai, Xin-Sheng Yao and Hiroyouki Osada
Molbank 2003, 2003(3), M327; https://doi.org/10.3390/M327 - 03 May 2003
Cited by 50 | Viewed by 3434
Abstract
Recently we have reported [1] six new cell cycle inhibitors belonging to plant polyphenolics from Rubus aleaefolius Poir. (family Rosacae), the source plant of a traditional Chinese medicine Cuye Xuangouzi, which is used also as a folk medicine to cure certain cancers [...] Read more.
Recently we have reported [1] six new cell cycle inhibitors belonging to plant polyphenolics from Rubus aleaefolius Poir. (family Rosacae), the source plant of a traditional Chinese medicine Cuye Xuangouzi, which is used also as a folk medicine to cure certain cancers in partial area of China.[...] Full article
118 KiB  
Short Note
5-(1-Acetamido)benzyl-5-methyl Imidazolidin-2,4-dione
by S. Thennarasu and P. T. Perumal
Molbank 2003, 2003(3), M326; https://doi.org/10.3390/M326 - 03 May 2003
Cited by 50 | Viewed by 2414
Abstract
A general two-step method for the synthesis of 5,5-disubstituted imidazolidin-2,4-diones has been reported elsewhere [1].[...] Full article
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