Studies on the Constituents of the Stems of Tinospora tuberculata BEUMEE, III. : New Diterpenoids, Borapetoside B and Borapetol B

Abstract

A new diterpene glucoside, borapetoside B (1), and its aglycone, borapetol B (2), were isolated from the stems of Tinospora tuberculate BEUMEE as the bitter principles, and their structures were elucidated.