6 SECOIRIDOID GLUCOSIDES FROM JASMINUM-POLYANTHUM

Reinvestigation of the dried powers of Jasminum polyanthum has led to the isolation of six new secoiridoid glucosides, jaspolyanoside, polya noside, isojaspolyosides A, B and C, and 6 ''-O-beta-D-glucopyranosylo leuropein, together with the known secoiridoid glucoside, angustifolio side B and flavonoid glycosides, nicotiflorine, kaempferol -alpha-L-rh amnopyranosyl-beta-D-galactopyranoside) and mauritianin. The structure s of the new compounds were elucidated on the basis of chemical and sp ectroscopic evidence. Comparison of the spectral data of 6 ''-O-beta-D -glucopyranosyloleuropein and those reported for angustifolioside A, p reviously recognized as 6 ''-O-beta-D-glucopyranosyloleuropein, led to the conclusion that the structure of angustifolioside A should be rev ised to 5 ''-O-beta-D-glucopyranosyloleuropein.