Abstract
In the course of studies on the metabolism of iridoid compounds, three new compounds
derived from 6α-hydroxygeniposide and 6β-hydroxygeniposide, obtained from gardenoside
by the hydrochloric acid treatment, were isolated after the hydrolysis with β-glucosidase.
The aglycone of 6β-hydroxygeniposide was elucidated as 6β-hydroxygenipin. On the other
hand, the aglycones of 6α-hydroxygeniposide were identified as the mixture of stereoisomers,
6α-hydroxygenipin and 6α-hydroxy-1-epi-genipin.
