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Malyngamide 3 and cocosamides A and B from the marine cyanobacterium Lyngbya majuscula from Cocos Lagoon, Guam.

ABSTRACT: Malyngamide 3 (1) and cocosamides A (2) and B (3) were isolated from the lipophilic extract of a collection of Lyngbya majuscula from Cocos Lagoon, Guam. The planar structures of compounds 1-3 were determined by spectroscopic methods. The absolute configuration of 1 was determined by modified Mosher's method, NOESY data, and comparison with lyngbic acid (4). The absolute configurations of 2 and 3 were assigned by enantioselective HPLC analysis and comparison with the closely related compound pitipeptolide A (5). Compounds 1-3 showed weak cytotoxicity against MCF7 breast cancer and HT-29 colon cancer cells.

SUBMITTER: Gunasekera SP

PROVIDER: S-EPMC3081898 | biostudies-literature | 2011 Apr

REPOSITORIES: biostudies-literature

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Malyngamide 3 and cocosamides A and B from the marine cyanobacterium Lyngbya majuscula from Cocos Lagoon, Guam.

Gunasekera Sarath P SP Owle Chivas S CS Montaser Rana R Luesch Hendrik H Paul Valerie J VJ

Journal of natural products 20110222 4

Malyngamide 3 (1) and cocosamides A (2) and B (3) were isolated from the lipophilic extract of a collection of Lyngbya majuscula from Cocos Lagoon, Guam. The planar structures of compounds 1-3 were determined by spectroscopic methods. The absolute configuration of 1 was determined by modified Mosher's method, NOESY data, and comparison with lyngbic acid (4). The absolute configurations of 2 and 3 were assigned by enantioselective HPLC analysis and comparison with the closely related compound pit ...[more]

PMID: 21341718

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