Homophymine A, an Anti-HIV Cyclodepsipeptide from the Sponge <i>Homophymia</i> sp.
作者:Angela Zampella、Valentina Sepe、Paolo Luciano、Filomena Bellotta、Maria Chiara Monti、Maria Valeria D’Auria、Trine Jepsen、Sylvain Petek、Marie-Thérèse Adeline、Olivier Laprévôte、Anne-Marie Aubertin、Cécile Debitus、Christiane Poupat、Alain Ahond
DOI:10.1021/jo800583b
日期:2008.7.1
A new anti-HIV cyclodepsipeptide, homophymine A, was isolated from a New Caledonian collection of the marine sponge Homophymia sp. The structure of homophymine A was determined by interpretation of spectroscopic data, acid hydrolysis, and LC-MS analysis. Homophymine A contains 11 amino acid residues and an amide-linked 3-hydroxy-2,4,6-trimethyloctanoic acid moiety. Along with four D-, two L-, and one N-methyl arnino acids, it also contains four unusual amino acid residues: (2S,3S,4R)-3,4diMe-Gln, (2R,3R,4S)-4-amino-2,3-dihydroxy-1,7-heptandioic acid, L-ThrOMe, and (2R,3R,4R)-2-amino3-hydroxy-4,5-dimethylhexanoic acid. In a cell-based XTT assay, homophymine A exhibited cytoprotective activity against HIV-1 infection with a IC50 of 75 nM.