MINOR CONSTITUENTS FROM BUPLEURUM-FRUTICOSUM ROOTS

A new triterpenoid saponin, 23-acetoxy,16 alpha-hydroxy-13,28-epoxyole an-11-en-3 beta-yl-[beta-D-glucopyranosyl-(1 --> 2)]-[beta-D-glucopyra nosil(1 --> 3)]-beta-D-fucopyranoside, has been isolated from the root s of Bupleurum fruticosum, along with eight coumarins, scopoletin, sco parone, prenyletin, capensin, fraxetin, aesculetin,7-(3 -methyl-2-bute nyloxy-6 -methoxycoumarin, 2-hydroxy-3-methyl-3-butenyloxy)-6-methoxyc oumarin and ihydroxy-6-methoxy-8-(3-methyl-2-butenyl)coumarin. The las t compound has not been previously encountered in nature. The structur es were determined by analysis of NMR spectral data including two-dime nsional techniques.