Marine Drugs 2015-06-01

Amino Acid-Derived Metabolites from the Ascidian Aplidium sp.

Tae Hyung Won, Chang-Kwon Kim, So-Hyoung Lee, Boon Jo Rho, Sang Kook Lee, Dong-Chan Oh, Ki-Bong Oh, Jongheon Shin

Index: Mar. Drugs 13 , 3836-48, (2015)

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Abstract

Four new iodobenzene-containing dipeptides (1-4), a related bromotryptophan-containing dipeptide (5), and an iodophenethylamine (6) were isolated from the ascidian Aplidium sp. collected off the coast of Chuja-do, Korea. The structures of these novel compounds, designated as apliamides A-E (1-5) and apliamine A (6) were determined via combined spectroscopic analyses. The absolute configuration of the amino acid residue in 1 was determined by advanced Marfey's analysis. Several of these compounds exhibited moderate cytotoxicity and significant inhibition against Na+/K+-ATPase (4).