New Cytotoxic Lupane Triterpenes from Perrottetia arisanensis

作者:Du, Ying Chi; Lin, An Shen; Wu, Chin Chung; Hsieh, Pei Wen; Chen, Yung Husan; Chen, I Hsiao; Chen, Shu Li; Yen, Hsin Fu; Luebken, Tilo; Chang, Fang Rong; Wu, Yang Chang*
来源:Planta Medica, 2009, 75(8): 848-855.
DOI:10.1055/s-0029-1185438

摘要

Eight new lupane triterpenes, including 7 beta-cis-coumaroylbetulinic acid (1), 7 beta-trans-coumaroylbetulinic acid (2), 7 beta-cis-coumaroyl-3-epi-betulinic acid (3), 7 beta-trans-coumaroyl-3-epi-betulinic acid (4), 7 beta-cis-coumaroylbetulonic acid (5), 7 beta-trans-coumaroylbetulonic acid (6), 7 beta-hydroxybetulinaldehyde (7) and 28-norlup-20(29)-ene-3 alpha, 17 beta-diol (8), together with fifteen known compounds were isolated from the bioactive methanol extract of the stems of Perrottetia arisanensis. The structures of the new compounds were elucidated by spectroscopic and HR-ESI-MS analysis. All new compounds were evaluated for their cytotoxicity against six human cancer cell lines. Among them, lupane triterpene coumaroyl esters 1-6 showed moderate cytotoxicity with IC50 values ranging from 3.75 to 21.29 mu M. This is the first report for lupane triterpenes with a phenylpropane moiety substituted at C-7.