Three new steroidal sapogenins isolated from the rhizomes of Dioscorea prazeri have been shown on the basis of chemical and spectral evidence to be (25R)-spirost-5-en-3β,14-diol (I), (25R)-14-hydroxyspirost-4-en-3-one (II), and (25R)-14-hydroxy-5β-spirostan-3-one (III).
K. Rajaraman, A. K. Batta and S. Rangaswami, J. Chem. Soc., Perkin Trans. 1, 1975, 1560 DOI: 10.1039/P19750001560
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