Abstract:
:Six new sesquiterpenes, 10-hydroxy-epiaplysin (1), 10-hydroxy-aplysin (2), 10-hydroxy-debromoepiaplysin (3), aplysin-9-ene (4), epiaplysinol (5) and debromoepiaplysinol (6), together with 13 known compounds (7-19), have been isolated from the red alga Laurencia tristicha. The structures of 1-6 were determined by spectroscopic methods including IR, EI-MS, HREI-MS, and 1D and 2D NMR techniques. All compounds were obtained from this species for the first time and were tested for cytotoxic activities against several human cancer cell lines including lung adenocarcinoma (A549), stomach cancer (BGC-823), hepatoma (Bel 7402), colon cancer (HCT-8) and HeLa cell lines. Compound 6 showed selective cytotoxicity against HeLa cell line with IC(50) 15.5 microM, cholest-5-en-3beta,7alpha-diol (14) was toxic to all tested cell lines with IC(50) values of 16.8, 5.1, 0.5, 0.5, and 0.3 microM, respectively, and other compounds were inactive (IC(50)>10 microg/ml).
journal_name
J Asian Nat Prod Resjournal_title
Journal of Asian natural products researchauthors
Sun J,Shi DY,Li S,Wang SJ,Han LJ,Fan X,Yang YC,Shi JGdoi
10.1080/10286020601103338subject
Has Abstractpub_date
2007-09-01 00:00:00pages
725-34issue
6-8eissn
1028-6020issn
1477-2213pii
784382759journal_volume
9pub_type
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