Journal
MAGNETIC RESONANCE IN CHEMISTRY
Volume 50, Issue 2, Pages 174-177Publisher
WILEY-BLACKWELL
DOI: 10.1002/mrc.2870
Keywords
NMR; 1H NMR; 13C NMR; two-dimensional NMR; laurokamin A; laurokamin B; laurokamin C; Laurencia okamurae
Funding
- Shandong Province Natural Science Foundation [ZR2009BQ021]
- National Natural Science Foundation of China [41106136, 41106137]
- Chinese Academy of Sciences [KZCX2-YW-QN209, KZCX2-YW-225]
- Foundation of the Chinese Academy of Sciences
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Three new halogenated chamigrane sesquiterpenes, laurokamin A (1), laurokamin B (2), and laurokamin C (3), and four known halogenated chamigrane sesquiterpenes, 10-bromo-alpha-chamigrene (4), 10-bromo-beta-chamigrene (5), 2,10-dibromo-3-chloro-beta-chamigrene (6), and obtusane (7), were isolated from the marine red alga Laurencia okamurae collected from the coast of Rongcheng, China. The structures of these compounds were unambiguously identified by one- and two-dimensional NMR and mass spectroscopic methods. The antimicrobial activity of compounds 13 was evaluated. Copyright (C) 2012 John Wiley & Sons, Ltd.
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