| Literature DB >> 16933868 |
Ming Zhao1, Shujun Zhang, Liwei Fu, Na Li, Jiao Bai, Junichi Sakai, Liyan Wang, Wanxia Tang, Toshiaki Hasegawa, Hirotsugu Ogura, Takao Kataoka, Seiko Oka, Miwa Kiuch, Katutoshi Hirose, Masayoshi Ando.
Abstract
Two new taraxasterane-type triterpenes, 20beta,28-epoxy-28alpha-methoxytaraxasteran-3beta-ol (1) and 20beta,28-epoxytaraxaster-21-en-3beta-ol (2), were isolated from an ethyl acetate extract of the leaves of Nerium oleander, together with ursane-type triterpenes, 28-nor-urs-12-ene-3beta,17beta-diol (3) and 3beta-hydroxyurs-12-en-28-aldehyde (4). The structures of 1 and 2 were established on the basis of their spectroscopic data. Anti-inflammatory activity of 1-4 was examined on the basis of inhibitory activity against the induction of intercellular adhesion molecule-1 (ICAM-1). Cytotoxic activity of 1-4 was evaluated against four human cell lines, A-549, WI-38, VA-13, and HepG2 cells.Entities:
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Year: 2006 PMID： 16933868 DOI： 10.1021/np0680073
Source DB: PubMed Journal: J Nat Prod ISSN： 0163-3864 Impact factor: 4.050