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Molbank
Volume 2000
Issue 5
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Molbank, Volume 2000, Issue 5 (December 2000) – 21 articles

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87 KiB  
Short Note
24,31-Epoxy-24-methyl-elemo-lanost-8,9-ene-3-ol
by N. El Aouad, A. Benharref and R. Gree
Molecules 2000, 5(12), M192; https://doi.org/10.3390/M192 - 25 Dec 2000
Abstract
To a solution of 1g (2.27 mmol) of 1 in 40ml of chloroform at room temperature was added 0.55g (2.27 mmol) of meta-chloroperbenzoic acid (mCPBA).[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
92 KiB  
Short Note
E,E-1-(4-Bromophenyl)-5-(3-indolyl)-1,4-pentadien-3-one
by Gang-Chun Sun, Rui-Yun Guo, Jian-Qiang Qu, Liu-Fang Wang, Jun-Biao Chang and Rong-Feng Chen
Molecules 2000, 5(12), M191; https://doi.org/10.3390/M191 - 25 Dec 2000
Abstract
3-(1-Butenone-3)indole 1 was prepared by previously published method [1].[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
86 KiB  
Short Note
8-Dihydro-3-methyl-7-amino-[1,2,4]triazino[3,4-b][1,3,4]thiadiazine
by Majid M. Heravi, Ghadir Rajabzadeh, Mohammad Rahimizadeh, Mehdi Bakavoli and Mitra Ghassemzadeh
Molecules 2000, 5(12), M190; https://doi.org/10.3390/M190 - 25 Dec 2000
Abstract
8-Dihydro-3-methyl-7-amino-[1,2,4]triazino[3,4-b][1,3,4]thiadiazine 2 was prepared by the cyclocondensation of 4-amino-6-methyl-3-thio-1,2,4-triazin-5-one 1 with chloro-acetonitrile in the presence of triethylamine in refluxing CH3CN.[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
92 KiB  
Short Note
2-Carbomethoxy-8a,9a-epoxy Nor-31-lanosten-3-enol
by M. Daoubi, A. Benharref, A. Kenz and M. Pierrot
Molecules 2000, 5(12), M189; https://doi.org/10.3390/M189 - 25 Dec 2000
Abstract
To sodium hydride (0.34 g, 13.96 mmole) carefully washed with anhydrous benzene under nitrogen (to eliminate mineral oil from the commercial product) [1], was added 0.8 ml (9.27 mmol) of dimethylcarbonate (freshly distilled) in dry benzene (20 ml).[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
92 KiB  
Short Note
8a,9a-Epoxy Nor-31-lanosten-3,4-olactone
by M. Daoubi, A. Benharref, E. Kossareva and M. Pierrot
Molecules 2000, 5(12), M188; https://doi.org/10.3390/M188 - 25 Dec 2000
Cited by 2
Abstract
To a mixture of (0.85 g, 4.9 mmol) of metachloroperoxybenzoic acid (mCPBA) [1,2] and (1.63 g, 19.6 mmol) of sodium hydrogenocarbonate (NaHCO3) in 20 ml of dichloromethane was added (1 g, 2.42 mmol) of 1 in 10 ml of CH2Cl2.[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
91 KiB  
Short Note
8a,9a-Epoxy Nor-31-lanosten-3-one
by M. Daoubi, A. Benharref, E. Kossareva and M. Pierrot
Molecules 2000, 5(12), M187; https://doi.org/10.3390/M187 - 25 Dec 2000
Abstract
To the epoxide 1 (1 g, 2.32 mmol) in acetone (50 ml) [1] was added dropwise at 0°C a solution of CrO3 (0.7 g, 7 mmol) in acetone (20 ml).[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
89 KiB  
Short Note
2-Methyl-5-methylmercapto-3-dimethylsulfoxymethine-7-phenyl-1,2,4-triazepine
by My. Y. Ait Itto, A Hasnaoui, A. Riahi and A. Huet
Molecules 2000, 5(12), M186; https://doi.org/10.3390/M186 - 25 Dec 2000
Cited by 3
Abstract
All the following operations were performed under an inert atmosphere using standard vacuum line techniques. Trimethyloxosulfonium iodide (2, 0.73 g, 3.3 mmol) [1] was suspended in anhydrous DMSO (6 mL) and sodium hydride (80 % suspension in mineral oil, 0.1 g, [...] Read more.
All the following operations were performed under an inert atmosphere using standard vacuum line techniques. Trimethyloxosulfonium iodide (2, 0.73 g, 3.3 mmol) [1] was suspended in anhydrous DMSO (6 mL) and sodium hydride (80 % suspension in mineral oil, 0.1 g, 3.3 mmol) was added at room temperature.[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
88 KiB  
Short Note
1,4-Bis(2',4',6'-trimethylphenylethynyl)benzene
by Laura Jeffries and Eric Bosch
Molecules 2000, 5(12), M185; https://doi.org/10.3390/M185 - 25 Dec 2000
Abstract
The experimental procedure follows the general synthesis of arylalkynes reported by Sonogashira [1].[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
84 KiB  
Short Note
E-(4-Methylbenzylidene)succinic anhydride
by Abdullah Mohamed Asiri
Molecules 2000, 5(12), M184; https://doi.org/10.3390/M184 - 25 Dec 2000
Abstract
The title compound was obtained by dehydration of the corresponding diacid 1 (12.1 g, 55 mmol) by boiling in acetyl chloride (50 ml) for four hours.[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
87 KiB  
Short Note
5-(Indol-3-yl)barbituric acid
by Abdullah Mohamed Asiri
Molecules 2000, 5(12), M183; https://doi.org/10.3390/M183 - 25 Dec 2000
Cited by 1
Abstract
5-(Indol-3-yl)barbituric acid 3 was prepared by knovenagel condensation of indol-3-carboxaldehyde 1 and barbituric acid 2 in ethanol using piperidine as a base [1,2].[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
89 KiB  
Short Note
N-Benzotriazol-1-yl-methyl-1,2,3,4-tetrahydro-b-carboline
by Ann Lam and Naseem Peerzada
Molecules 2000, 5(12), M182; https://doi.org/10.3390/M182 - 25 Dec 2000
Abstract
Katritzky's well-established chemistry of benzotriazole [1] was applied to the synthesis of 1,2,3,4- tetrahydro-b-carboline, which have been traditionally prepared by Pictet-Spengler condensation2, Fischer cyclisation and other methods3.[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
94 KiB  
Short Note
A New Xanthone from Swertia decora
by Huai Xiao, Zenai Chen, Guangming Liu, Jinfu Qian and Yang Lu
Molecules 2000, 5(12), M181; https://doi.org/10.3390/M181 - 25 Dec 2000
Cited by 3
Abstract
Members of genus Swertia (Gentianaceae) have been the source of many active xanthones.[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
90 KiB  
Short Note
bis[(N-Benzyloxycarbonyl)-(2S)-amino-4-methylpentyl]disulfide
by Jean-Marc Poudrel and Peter Karuso
Molecules 2000, 5(12), M180; https://doi.org/10.3390/M180 - 25 Dec 2000
Abstract
Disulfides that mimic the pentapeptide Phe-Leu-Gly-Leu-Phe can be obtained in high yield from the corresponding thioacetate via the intermediate mercaptan by prolonged standing in alkali [1].[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
200 KiB  
Short Note
bis[(N-Benzyloxycarbonyl)-(2R)-amino-4-methylpentyl]disulfide
by Jean-Marc Poudrel and Peter Karuso
Molecules 2000, 5(12), M179; https://doi.org/10.3390/M179 - 25 Dec 2000
Abstract
Disulfides that mimic the pentapeptide Phe-D-Leu-Gly-D-Leu-Phe can be obtained in high yield from the corresponding thioacetate via the intermediate mercaptan by prolonged standing in alkali [1].[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
90 KiB  
Short Note
2-Carbomethoxynor-31-lanosten-2-enol
by M. Daoubi, A. Benharref and M. Pierrot
Molecules 2000, 5(12), M178; https://doi.org/10.3390/M178 - 25 Dec 2000
Abstract
To sodium hydride (0.3g, 12.7 mmole) carefully washed with anhydrous benzene under nitrogen (to eliminate mineral oil from the commercial product) [1], was added (0.8 ml, 8.43 mmole) of dimethylcarbonate (freshly distilled) in dry benzene (20 ml).[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
89 KiB  
Short Note
2-(4-Biphenyl-1-yl)-1,3-diazaspiro[4,5]dec-1-en-4-thione
by Milos Sedlak and Jirí Hanusek
Molecules 2000, 5(12), M177; https://doi.org/10.3390/M177 - 25 Dec 2000
Cited by 5
Abstract
The title compound was prepared from imidazolinone 1 whose synthesis as well as 1H and 13C NMR spectra were published previously [1].[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
89 KiB  
Short Note
(u,l,l,u)-3,5-Diethyl-2,4,6-triphenyltetrahydropyran-2,4-diol
by Rolf Söllner, Thomas Koy and Michael Schmittel
Molecules 2000, 5(12), M176; https://doi.org/10.3390/M176 - 25 Dec 2000
Abstract
The experimental procedure follows a novel protocol developed recently by us [1].[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
90 KiB  
Short Note
2,4-Dinitrophenylhydrazine-benzo-9-crown-3
by A. Moghimi, M. Faal Rastegar and M. Ghandi
Molecules 2000, 5(12), M175; https://doi.org/10.3390/M175 - 25 Dec 2000
Cited by 1
Abstract
In the course of our recent studies on the synthesis, solid phase structure, solution and solid phase 13C CPMAS [1], and its application in Ion Selective Electrodes [2] of the smallest benzo crown ether, Benzo-9-Crown-3, B9C3, we accomplished the synthesis of B9C3 [...] Read more.
In the course of our recent studies on the synthesis, solid phase structure, solution and solid phase 13C CPMAS [1], and its application in Ion Selective Electrodes [2] of the smallest benzo crown ether, Benzo-9-Crown-3, B9C3, we accomplished the synthesis of B9C3 derivative 3.[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
88 KiB  
Short Note
3-Chloro-5-methoxy-1-benzo[b]thiophene-2-sulphonamide
by Gerard P. Moloney
Molecules 2000, 5(12), M174; https://doi.org/10.3390/M174 - 25 Dec 2000
Abstract
As part of a research programme targeting novel molecules as potential anti-inflammatory agents we synthesised 3-Chloro-5-methoxy-1-benzo[b]thiophene-2-sulphonylamide base on the reported anti-inflammatory activity of the structurally related molecule 3-Isopropoxy-5-methoxy-N-(1H-1,2,3,4-tetraazol-5-yl)-1-benzothiophene-2-carboxamide [1,2].[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
95 KiB  
Short Note
5-[o-(1-L-Phenylalanylamino)ethoxyl]phenyl-10,15,20-triphenylporphyrin
by Hai-yang Liu, Xi-ming Hu, Xiao Ying, Zhong-ping Yao, Jin-wang Huang and Liang-nian Ji
Molecules 2000, 5(12), M173; https://doi.org/10.3390/M173 - 25 Dec 2000
Abstract
5-[o-(2-bromo-1-ethoxy)]phenyl-10,15,20-triphenylporphyrin (1) was prepared according to published method [1].[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
90 KiB  
Short Note
8,9-24,25-Diepoxy-Eupho-lanostan-3,4-olactone
by N. El Aouad, A. Benharref and J.-P. Lavergne
Molecules 2000, 5(12), M172; https://doi.org/10.3390/M172 - 25 Dec 2000
Abstract
To a mixture of 0.8 g (4.7 mmol) of metachloroperbenzoique acid (mCPBA) and 1.58g (18.8mmol) of sodium hydrogenocarbonate (NaHCO3) in 15 ml of dichloromethane was added 1 g (2.35 mmol) of 1 in 5 ml of CH2Cl2.[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
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