T. Tanahashi et al., ISOLATION OF OLEAYUNNANOSIDE FROM FRAXINUS-INSULARIS AND REVISION OF ITS STRUCTURE TO INSULAROSIDE-6'''-O-BETA-D-GLUCOSIDE, Chemical and Pharmaceutical Bulletin, 41(9), 1993, pp. 1649-1651
A secoiridoid glucoside, insularo-6'''-O-beta-D-glucoside, was isolate
d along with 9 known compounds from the leaves of Fraxinus insularis a
nd its structure was determined to be 2 on the basis of spectroscopic
and chemical studies. Direct comparison of this glucoside with a known
secoiridoid glucoside, oleayunnanoside, led to the conclusion that th
e two were identical, and that the proposed structure 2a for oleayunna
noside should be revised to 2.