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Molbank, Volume 2003, Issue 3 (June 2003)

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Open AccessShort Note 5-(1-Acetamido)benzyl-5-methyl Imidazolidin-2,4-dione
Molbank 2003, 2003(3), M326; doi:10.3390/M326
Received: 3 July 2002 / Accepted: 25 October 2002 / Published: 3 May 2003
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Abstract
A general two-step method for the synthesis of 5,5-disubstituted imidazolidin-2,4-diones has been reported elsewhere [1].[...] Full article
Open AccessShort 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
Molbank 2003, 2003(3), M327; doi:10.3390/M327
Received: 22 February 2002 / Accepted: 25 February 2002 / Published: 3 May 2003
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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
Open AccessShort 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
Molbank 2003, 2003(3), M328; doi:10.3390/M328
Received: 22 February 2002 / Accepted: 25 February 2002 / Published: 3 May 2003
Cited by 2 | PDF Full-text (157 KB) | HTML Full-text | XML Full-text | Supplementary Files
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
Open AccessShort Note 5-{4-itro-3-[1-(toluene-4-sulphonyl)-hexyl]-phenyl}-10,15,20-triphenylporphyrin Zinc(II)
Molbank 2003, 2003(3), M329; doi:10.3390/M329
Received: 4 April 2003 / Accepted: 5 April 2003 / Published: 3 May 2003
Cited by 1 | PDF Full-text (105 KB) | XML Full-text | Supplementary Files
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
Open AccessShort 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
Molbank 2003, 2003(3), M330; doi:10.3390/M330
Received: 22 February 2003 / Accepted: 4 June 2003 / Published: 8 June 2003
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Abstract
The experimental procedure follows the general synthesis by the addition reaction of isocyanates with e-caprolactam (CPL) [1, 2].[...] Full article
Open AccessShort 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
Molbank 2003, 2003(3), M331; doi:10.3390/M331
Received: 22 February 2003 / Accepted: 4 June 2003 / Published: 8 June 2003
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Abstract
The experimental procedure follows the general synthesis of blocked isocyanates [1, 2].[...] Full article
Open AccessShort Note 1,2-Bis(p-phenylcarbamoyl-oxy-amino-cyclohexylidene)ethane
Molbank 2003, 2003(3), M332; doi:10.3390/M332
Received: 22 February 2003 / Accepted: 4 June 2003 / Published: 8 June 2003
PDF Full-text (86 KB) | HTML Full-text | XML Full-text | Supplementary Files
Abstract
The experimental procedure follows the general synthesis of blocked isocyanates [1, 2].[...] Full article
Open AccessShort Note 1,2-Bis(p-phenyl-carbamic Acid Phenyl Ester)ethane
Molbank 2003, 2003(3), M333; doi:10.3390/M333
Received: 22 February 2003 / Accepted: 4 June 2003 / Published: 8 June 2003
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Abstract
The experimental procedure follows the general synthesis by the addition reaction of isocyanates with phenols [1, 2].[...] Full article
Open AccessShort Note 3-Benzoylacrylonitrile [(E)-4-Oxo-4-phenyl-2-butenenitrile]
Molbank 2003, 2003(3), M334; doi:10.3390/M334
Received: 18 February 2003 / Accepted: 22 May 2003 / Published: 1 June 2003
PDF Full-text (127 KB) | HTML Full-text | XML Full-text | Supplementary Files
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
Open AccessShort Note Phenylacetic Acid (3S,6S)-6-Acetoxy-8-methyl-8-aza-bicyclo[3.2.1]oct-3-yl Ester
Molbank 2003, 2003(3), M335; doi:10.3390/M335
Received: 22 February 2003 / Accepted: 22 May 2003 / Published: 1 June 2003
PDF Full-text (92 KB) | HTML Full-text | XML Full-text | Supplementary Files
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
Open AccessShort Note Acetic Acid 3-(2-Chloro-benzoylamino)-8-methyl-8-aza-bicyclo[3.2.1]oct-6-yl Ester
Molbank 2003, 2003(3), M336; doi:10.3390/M336
Received: 22 February 2003 / Accepted: 22 May 2003 / Published: 1 June 2003
PDF Full-text (79 KB) | HTML Full-text | XML Full-text | Supplementary Files
Open AccessShort Note (R,S)-Benzyl 5-(1-Hydroxyethyl)-1H-pyrrole-2-carboxylate
Molbank 2003, 2003(3), M337; doi:10.3390/M337
Received: 22 February 2003 / Accepted: 22 May 2003 / Published: 1 June 2003
PDF Full-text (85 KB) | HTML Full-text | XML Full-text | Supplementary Files
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
Open AccessShort Note N-[5-(3-Phenylpropionyl)-1H-pyrrole-2-carbonyl]-L-proline Methyl Ester
Molbank 2003, 2003(3), M338; doi:10.3390/M338
Received: 22 February 2003 / Accepted: 22 May 2003 / Published: 1 June 2003
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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
Open AccessShort Note 2-[6-(2-Hydroxyphenyl)-1,2,4,5-tetrazin-3-yl]phenol
Molbank 2003, 2003(3), M339; doi:10.3390/M339 (registering DOI)
Received: 10 February 2003 / Accepted: 18 June 2003 / Published: 21 June 2003
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Abstract
Hydrazine hydrate (99%, 5g, 100 mmol) was added to a solution of 2-cyanophenol (2 g, 16.8 mmol) in absolute ethanol (30 ml) under N2 atmosphere, and the reaction mixture was refluxed for 12 h.[...] Full article
Open AccessShort Note 2-Ethyl 4-methyl 5-amino-3-methylthiophene-2,4-dicarboxylate
Molbank 2003, 2003(3), M340; doi:10.3390/M340 (registering DOI)
Received: 5 March 2003 / Accepted: 4 June 2003 / Published: 21 June 2003
Cited by 2 | PDF Full-text (85 KB) | HTML Full-text | XML Full-text | Supplementary Files
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
Open AccessShort Note Methyl 2-Amino-5,6-dihydro-4H-cyclopenta[b]thiophene-3-carboxylate
Molbank 2003, 2003(3), M341; doi:10.3390/M341 (registering DOI)
Received: 5 March 2003 / Accepted: 4 June 2003 / Published: 21 June 2003
Cited by 3 | PDF Full-text (85 KB) | HTML Full-text | XML Full-text | Supplementary Files
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

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