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Title: Facile synthesis of some new steroidal pyrazoline and 1′,3′,4′-oxadiazole
Authors: Shamsuzzaman
Alam, Mohd Gulfam
Siddiqui, Tabassum
Keywords: Steroidal pyrazoline and oxadiazole
Methyl acetoacetate
4-chlorobenzoic acid
Phosphorous oxy¬chloride
4-ethylbenzoyl chloride
Issue Date: May-2012
Publisher: NISCAIR-CSIR, India
Abstract: Title compounds, 3β-[(3′-methyl-5′-oxo-2′-pyrazolin-1′-yl)­carbonyl­methoxy]cholest-5-ene 4, 3β-[5′-phenyl-1′,3′,4′-oxadia­z­ol-2′-yl]methoxycholest-5-ene 5, 3β-[5′-(4′′-chlorophenyl)-1′,3′,4′-oxadiazol-2′-yl]methoxycholest-5-ene 6, 3β-[5′-(4′′-ethylphenyl)-1′,3′,4′-oxadiazole-2′-yl)methoxycholest-5-ene 7 have been prepared by the cyclization of cholest-5-en-3β-O-acetyl hydrazide 3 using methyl acetoacetate, benzoic acid, 4-chlorobenzoic acid and 4-ethylbenzoyl chloride in presence of phosphorous oxychloride through conventional heating. Compound 5 has been prepared by two different ways.
Page(s): 760-764
CC License:  CC Attribution-Noncommercial-No Derivative Works 2.5 India
ISSN: 0975-0983(Online); 0376-4699(Print)
Source:IJC-B Vol.51B(05) [May 2012]

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