Studies on chemical constituents of Bupleurum genus. Part II. Isolation of triterpenoid glycosides (saikosaponins) from Bupleurum kunmingense and their chemical structures.

Abstract

Five new triterpenoid glycosides named S3, S4, S8, S9 and S10 were isolated from the root of Bupleurum kunmingense, and their structures were elucidated by NMR spectral analysis as 16-epi-chikusaikoside 1, 3''-O-acetylsaikosaponin-a, 4''-O-acetylsaikosaponin-a, 2''-O-acetylsaikosaponin-d, and 2''-O-acetylsaikosaponin-a, respectively.