Triterpenes and Flavonol Glucuronides from Oenothera cheiranthifolia

Tsutomu Nakanishi; Yuka Inatomi; Hiroko Murata; Syun-suke Ishida; Yuri Fujino; Kanako Miura; Yoshito Yasuno; Akira Inada; Frank A. Lang; Jin Murata

doi:10.1248/cpb.55.334

Notes

Triterpenes and Flavonol Glucuronides from Oenothera cheiranthifolia

Tsutomu Nakanishi, Yuka Inatomi, Hiroko Murata, Syun-suke Ishida, Yuri Fujino, Kanako Miura, Yoshito Yasuno, Akira Inada, Frank A. Lang, Jin Murata

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Keywords: Oenothera cheiranthifolia, Onagraceae, cheiranthic acid, ursane-type triterpene, oleanane-type triterpene, flavonol glucuronide

JOURNAL FREE ACCESS

2007 Volume 55 Issue 2 Pages 334-336

DOI https://doi.org/10.1248/cpb.55.334

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Abstract

A new ursane-type triterpene, named as cheiranthic acid (1), was isolated from the MeOH extract of whole plants of Oenothera cheiranthifolia (Onagraceae) along with an isomeric pair of known oleanane- and ursane-type triterpenes (arjunolic acid and asiatic acid) and three flavonol glucuronide analogues (quercetin 3-O-glucuronide, its n-butyl ester, and myricetin 3-O-glucuronide). Their structures were elucidated based on spectroscopic evidence.

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