Flabelliferins A and B, Sesterterpenoids from the South Pacific Sponge Carteriospongia flabellifera
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- 作者：Thushara Diyabalanage ; Ranjala Ratnayake ; Heidi R. Bokesch ; Tanya T. Ransom ; Curtis J. Henrich ; John A. Beutler ; James B. McMahon ; Kirk R. Gustafson
- 刊名：Journal of Natural Products
- 出版年：2012
- 出版时间：August 24, 2012
- 年：2012
- 卷：75
- 期：8
- 页码：1490-1494
- 全文大小：235K
- 年卷期：v.75,no.8(August 24, 2012)
- ISSN：1520-6025
文摘
Two new sesterterpenoids named flabelliferins A (1) and B (2) were isolated from the lipophilic extract of the sponge Cateriospongia flabellifera, collected in the South Pacific near Vanuatu. The structure and absolute configuration of these two compounds were assigned by a combination of one- and two-dimensional NMR spectroscopy and by Mosher鈥檚 ester analysis. Flabelliferin A (1) has a rare 25-homocheilanthane carbon skeleton, while flabelliferin B (2) is a 24-nor-25-homoscalarane sesterterpenoid.