Kitajima Mariko, Fujii Norie, Yoshino Fumie, Sudo Hiroshi, Saito Kazuki, Aimi Norio, Takayama Hiromitsu
Graduate School of Pharmaceutical Sciences, Chiba University.
Chem Pharm Bull (Tokyo). 2005 Oct;53(10):1355-8. doi: 10.1248/cpb.53.1355.
Two new monoterpene glucosides, demethylsecologanol and 3'''-O-glucosylsenburiside II, were isolated from Ophiorrhiza liukiuensis (Rubiaceae) together with 23 known compounds, including camptothecins and beta-carboline-type alkaloids. Their structures were determined by spectroscopic analysis.