Saponins of Japanese Dioscoreaceae. IX. Hydrolysis of Diosgenin Glycosides.
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概要
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1) 25D-Spirosta-3,5-diene (I), cholesta-3,5-diene, and solanida-3,5-diene were found to be photometrically assayed on a micro-scale and accurately using a characteristic extinction at 235mμ due to 3,5-diene system in the molecules. With the aid of this method, the yields of (I), the main by-product accompanying diosgenin, from diosgenin and its glycosides upon acid treatment under various conditions were determined in order to find the optimal hydrolytic condition of diosgenin glycosides to minimize the yield of (I). 2) In comparison with diosgenin and its glycosides, the formation of corresponding ⊿^<3,5>-steroid by acid treatment from epi-diosgenin, 25D-spirost-4-en-3-ol, cholesterol, cholesterol glucoside, epi-cholesterol, solanidine, and solanine was examined in the same way. 3) A minor amount of 3-chloro-25D-spirost-5-ene was obtained besides (I) on boiling diosgenin with 2〜4N hydrochloric acid in 50% ethanol.
- 公益社団法人日本薬学会の論文
- 1959-05-10
著者
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山内 辰郎
Faculty of Pharmaceutical Sciences, Fukuoka University
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山内 辰郎
Pharmaceutical Institute Medical Faculty University of Kyushu
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山内 辰郎
Faculty Of Pharmaceutical Sciences Fukuoka University
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