Sinulaflexiolides A-K, cembrane-type diterpenoids from the chinese soft coral Sinularia flexibilis.
A bioassay-guided fractionation and chemical examination of the soft coral Sinularia flexibilis resulted in the isolation and characterization of sinulaflexiolides A-K (1-11), along with sinulariolone (12), 5-dehydrosinularolide (13), capillolide (14), sinulariolide (15), 5,8-epoxy-9-acetoxysinulariolide (16), flexibilide (17), dihydroflexibilide (18), and the enantiomer of 14-deoxycrassin (19). Their structures were determined on the basis of extensive spectroscopic (IR, MS, 2D NMR) data analysis and by comparison with spectroscopic data reported in the literature. Sinulaflexiolides D and E showed selective inhibitory activity against the gastric gland carcinoma cell line BGC-823 at 8.5 and 0.12 microM, respectively.
State Key Laboratory of Natural and Biomimetic Drugs, Peking University, Beijing 100083, People's Republic of China.
Ting
T
Wen
Yi
Y
Ding
Zhiwei
Z
Deng
Leen
L
van Ofwegen
Peter
P
Proksch
Wenhan
W
Lin
D000818:Animals; D037421:Anthozoa / Q000737:chemistry; D000970:Antineoplastic Agents / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D002681:China; D004224:Diterpenes / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D004354:Drug Screening Assays, Antitumor; D006801:Humans; D015394:Molecular Structure
D000970:Antineoplastic Agents; D004224:Diterpenes; C531340:sinulaflexiolide D; C531341:sinulaflexiolide E