Revised structures of soyasapogenols A,B,and E,oleanene-sapogenols from soybean. Structures of soyasaponins I,II,and III.

Isao Kitagawa, Masayuki Yoshikawa, HuiKang Wang, Masayuki Saito, Veeraphan Tosirisuk, T. Fujiwara, Ken‐ichi Tomita

Chemical and Pharmaceutical Bulletin · 1982 · 62 citations · 0 references

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Abstract

The structures of soyasapogenols A, B, and E, three of five hitherto isolated sapogenols of soybean (Glycine max Merrill), were re-investigated. Based on the chemical and X-ray analyses, it has been shown that the structures of soyasapogenols A, B, and E should be partly revised respectively from 1', 2', and 3'to 1, 2, and 3 and consequently the structures of soyasaponins I, II, and III are expressed as 6, 7, and 8.