期刊
TETRAHEDRON
卷 68, 期 41, 页码 8545-8550出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tet.2012.08.018
关键词
Heteroaromatic alkaloids; Marine sponge; Suberites sp.; Nakijinamines
资金
- Japan Society for the Promotion of Science
- Ministry of Education, Culture, Sports, Science, and Technology of Japan
The structures of seven new secondary metabolites isolated from an Okinawan marine sponge Suberites sp., nakijinamines A (1), B (2), and F-I (3-6) and 6-bromoconicamin (7), have been elucidated on the basis of spectroscopic analysis, chemical conversion, and conformational analysis. These analyses disclosed that 1-6 were heteroaromatic alkaloids having the hybrid structures of an aaptamine-type alkaloid and an indole alkaloid, while 7 was a bromoindole alkaloid. Nakijinamine I (6) is the first example of an aaptamine-type alkaloid possessing a 1,4-dioxane ring. Antimicrobial activities of 1-7 were evaluated. (C) 2012 Elsevier Ltd. All rights reserved.
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