Antiestrogenic constituents of the Thai medicinal plants Capparis flavicans and Vitex glabrata

Journal of Natural Products
Prathan LuechaHiroshi Noguchi

Abstract

Antiestrogenic compounds were investigated from Thai indigenous plants for galactogogues since estrogen is reported to suppress lactation in breastfeeding women. The aerial parts of the Thai medicinal plant Capparis flavicans, which has traditionally been used to promote lactation, gave the new compound capparoside A (1), along with 28 known compounds. The leaves of Vitex glabrata belong to the same genus as the chaste tree (Vitex agnus-castus), which is used traditionally to support lactation, and afforded the new compounds khainaoside A (14), khainaoside B (15), and khainaoside C (16), together with six known compounds. The isolates were tested for their biological activity using the estrogen-responsive human breast cancer cell lines MCF-7 and T47D. Syringaresinol (3) and principin (6), from C. flavicans, and khainaoside A (14) showed the most potent inhibitory effects on estrogen-enhanced cell proliferation among all compounds isolated. These results suggest that the lactation-promoting properties of C. flavicans might be related to the inhibitory effect on excess estrogen of women who experience insufficient breastfeeding and highlight the possibility of using V. glabrata leaves for their antiestrogenic properties.

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Citations

Sep 16, 2011·Natural Product Research·Qing-Wei TanZu-Jian Wu
Apr 21, 2012·Fitoterapia·Licheng YaoWenxia Zang
Sep 10, 2013·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Qi LuoYong-Xian Cheng
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