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  • Title: Triterpenoidal saponins from Madhuca butyracea.
    Author: Nigam SK, Li XC, Wang DZ, Misra G, Yang CR.
    Journal: Phytochemistry; 1992 Sep; 31(9):3169-72. PubMed ID: 1368412.
    Abstract:
    Two new triterpenoidal saponins, butyrosides A and B, were isolated from the seeds of Madhuca butyracea, along with two known saponins, Mi-saponin A and 16 alpha-hydroxy Mi-saponin A. On the basis of chemical and spectroscopic evidence, the structures of butyrosides A and B were established to be 3-O-beta-D-glucopyranosyl protobassic acid 28-O-beta-D-apiofuranosyl(1----3)-beta-D-xylopyranosyl (----4)-alpha-L-rhamnopyranosyl(1----2)-alpha-L-arabinopyranoside and 3-O-beta-D-glucopyranosyl 16 alpha-hydroxy protobassic acid 28-O-beta-D-apiofuranosyl(1----3)-beta-D-xylopyranosyl (1----4)-alpha-L-rhamnopyranosyl(1----2)-alpha-L-arabinopyranoside , respectively.
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