期刊
TETRAHEDRON LETTERS
卷 60, 期 15, 页码 1079-1081出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetlet.2019.03.030
关键词
Marine sponge; Bisabolene-type sesquiterpene; Halichondria sp.; ECD spectrum calculation
资金
- JSPS KAKENHI [22406001, 17H03994, 18K14933, 18K06719]
- Grants-in-Aid for Scientific Research [18K06719, 18K14933, 17H03994] Funding Source: KAKEN
A new compound, halichonic acid (1), was isolated from a marine sponge Halichondria sp., together with (6R,7S)-7-amino-7,8-dihydro-alpha-bisabolene (2). The structure of 1 was elucidated by spectroscopic analysis and ECD spectrum calculation to be a rearranged bisabolene-type sesquiterpene having a 3-azabicyclo[3.3.1]nonene moiety. Compound 2 was cytotoxic against HeLa cells with an IC50 value of 50 mu M, whereas 1 did not show cytotoxicity even at 50 mu M. It is possible that 1 is biosynthesized from farnesyl pyrophosphate and glycine, with rearrangement. (C) 2019 Elsevier Ltd. All rights reserved.
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