Steroid sapogenins and sterols of Solanum kieseritzkii
نویسندگان
چکیده
منابع مشابه
Biosynthesis of plant sterols. IX. The mode of oxygenation at carbon atom 26 in the formation of sapogenins from cholesterol.
It was suggested by previous workers that the C-26 oxygenation step in the biosynthetic conversion of cholesterol to tigogenin ((25R)-5a,220-spirostan-3-ol) requires the intermediacy of a C-24 double bond. To examine the validity of this hypothesis, (25-3H)-cholesterol was synthesized, and (4-'4 C)-(253 H)-cholesterol (H:14C ratio, 7.0) was administered to two Digitalis samen plants. A method o...
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The seeds of Luffa aegyptica Mill, locally known as "ghia torai" (family Cucurbitaceae), have earlier been studied for the saponin and sapogenin contents and found to contain a mixture of colourless saponins which on hydrolysis yields two acid and a neutral sapogenin. The acetates of the two acid genins melted at 266-268" and 176-181" while the neutral genin acetate melted at 262-264O.l The aci...
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Quatro saponinas esteroidais e três sapogeninas foram identificadas das partes aéreas de Brachiaria decumbens. As estruturas desses compostos foram estabelecidas através de métodos químicos e espectroscópicos (RMN de H e C, HMBC, HMQC) como 3 -metóxi-lanost-9(11)-eno (1), diosgenina (2a), iamogenina (2b), 3-O-D-glicopiranosil-24(S)-etil-22E-deidrocolesterol (3a), 3O-D-glicopiranosil-24(R)-etil-...
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ژورنال
عنوان ژورنال: Chemistry of Natural Compounds
سال: 1973
ISSN: 0009-3130,1573-8388
DOI: 10.1007/bf00564409