Study of constituents of Veronicastrum villosulum.
We investigated the constituents of Veronicastrum villosulum (Miquel) Yamazaki (Scrophulariaceae), an endangered species belonging to the IA group. From the aerial parts of this plant cultivated at the botanical garden of Sojo University, we isolated two new cucurbitacine-type glycosides, 3-O-alpha-L-rhamnopyranosyl-(1 --> 2)-[beta-D-glucopyranosyl-(1 --> 3)]-beta-D-glucopyranosides of 3beta,25-dihydroxycucurbit-5,23(E)-diene-7-one-25-methyl ether and 3beta,23-dihydroxycucurbit-5,24-diene-7-one-23-methyl ether.
Nohara
Toshihiro
T
Faculty of Pharmaceutical Sciences, Sojo University, 22-1, 4-chome, Ikeda, Kumamoto, 860-0082, Japan. none@ph.sojo-u.ac.jp
Nakano
Ai
A
El-Aasr
Mona
M
Ikeda
Tsuyoshi
T
Miyashita
Hiroyuki
H
Yoshimitsu
Hitoshi
H
Murakami
Kotaro
K
D035261:Plant Components, Aerial; D010936:Plant Extracts / Q000737:chemistry* / Q000302:isolation & purification*; D032264:Veronica
D010936:Plant Extracts