STEROIDAL SAPOGENINS FROM MILDEWED DIOSCOREA COLLETTII HOOK. F.
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Abstract
Six steroidal sapogenins were isolated from acid-treated rhizomes of mildewed Dioscorea collettii Hook. f.. Their chemical structures have been elucidated by means of chemical and spectrometric analyses as Smilagenone I; Sarsasapogenone II; Diosgenin III; Yamogenin IV; Epi-smilagenin V and Epi-sarsasapogenin VI. II and VI are new steroidal sapogenins.
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