Wu JL, Li N, Hasegawa T, Sakai JI, Kakuta S, Tang W, Oka S, Kiuchi M, Ogura H, Kataoka T, Tomida A, Tsuruo T, Ando M. Bioactive tetrahydrofuran lignans from Peperomia dindygulensis.
JOURNAL OF NATURAL PRODUCTS 2005;
68:1656-60. [PMID:
16309318 DOI:
10.1021/np050283e]
[Citation(s) in RCA: 29] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Five new tetrahydrofuran lignans (1-5), accompanied by four known compounds, were isolated from the ethyl acetate extract of Peperomia dindygulensis. Structures were elucidated mainly using 1D NMR, 2D NMR, and mass spectroscopic studies. The relative configurations of 1-5 were determined by NOE correlations. Several of the compounds showed weak growth inhibitory activity against three cell lines (WI-38, VA-13, and HepG2). Compound 5 exhibited stronger MDR (multidrug resistance) reversal activity than verapamil at 2.5 microg/mL in a cellular calcein accumulation assay. Compounds 4 and 5 showed weak inhibitory activity against induction of the intercellular adhesion molecule-1 (ICAM-1) in anti-inflammatory activity experiments.
Collapse