Isolation and characterization of new phenolic compounds with estrogen biosynthesis-inhibiting and antioxidation activities from Broussonetia papyrifera leaves.

ABSTRACT: Broussonetia papyrifera leaves (BPL) as a traditional Chinese medicine are also used in livestock feed for stimulating reproduction, adipose tissue and muscle development; however, the mechanism of their action is still unknown. Through estrogen biosynthesis-guided fractionation in human ovarian granulosa-like KGN cells, five new phenolic glycosides, broussoside A-E(1-5), along with fifteen known dietary phenolic compounds, were isolated from the n-butanol extract of BPL, and their structures were elucidated on the basis of NMR spectra analysis and chemical evidence. New compounds 3, 4, 5 and the known compounds 9 and 10 were found to potently inhibit estrogen biosynthesis in KGN cells. In addition, compounds 9, 17, 18, and 20 showed strong antioxidant activity against ABTS (2,2'-azino-bis

SUBMITTER: Yang C 

PROVIDER: S-EPMC3979757 | biostudies-literature | 2014

REPOSITORIES: biostudies-literature