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J Nat Prod. 2013 Apr 26;76(4):755-8. doi: 10.1021/np300878b. Epub 2013 Mar 6.

Isolation of ciliatamide D from a marine sponge Stelletta sp. and a reinvestigation of the configuration of ciliatamide A.

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1
Laboratory of Aquatic Natural Products Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo , Bunkyo-ku, Tokyo 113-8657, Japan.

Abstract

A new lipopeptide, ciliatamide D (1), was isolated from a marine sponge Stelletta sp., collected at Oshimashinsone, together with the known compound ciliatamide A (2). Ciliatamide D (1) is a congener of 2, in which N-Me-Phe is replaced by N-Me-Met(O). Marfey's analysis of the acid hydrolysate of 1 demonstrated that the two constituent amino acids were both in the l-form. This result prompted us to carefully investigate the configuration of 2, resulting in the assignment of the l-form for both residues.

PMID:
23465061
DOI:
10.1021/np300878b
[Indexed for MEDLINE]
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