PARTIAL SYNTHESIS OF PREGNENE-4-TRIOL-17(β),20(β),21-DIONE-3,11 AND PREGNENE-4-DIOL-17(β),21-TRIONE-3,11,20 MONOACETATE
نویسندگان
چکیده
منابع مشابه
(20S)-20-Acetoxy-4-pregnene-3,16-dione from Commiphora wightii
The title triterpene compound, C(23)H(32)O(4), isolated from Commiphora wightii features four trans-fused rings, among which the five-membered ring adopts an envelope conformation, the cyclo-hexene ring adopts a half-chair conformation and the two cyclo-hexane rings exist in chair conformations. The asymmetric unit contains two independent mol-ecules. Weak inter-molecular C-H⋯O hydrogen bonding...
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A high performance liquid chromatography method for determining the levels of 4-pregnene-3-ones in tissue containing fat, e.g. in thymus is reported. Following the extraction with chloroform/methanol the fat has been separated from the steroidal-fraction by using disposable extraction-columns. The steroidal-fraction has been analysed in two separation systems, on a RP18-column with a methanol/w...
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Background: An efficient, promoted tri-component catalytic reaction between barbituric acid (or N,N-dimethyl barbituric acid), 4-hydroxy coumarin, and a wide range of aryl aldehydes using zinc oxide nanowires (ZnO NWs) to obtain some new 4-hydroxychromenylarylmethyl-6-hydroxypyrimidine-2,4-diones is described. Method: The reactants were successfully condensed ...
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ژورنال
عنوان ژورنال: Journal of Biological Chemistry
سال: 1946
ISSN: 0021-9258
DOI: 10.1016/s0021-9258(17)41405-0