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Studies on the Thz, Thn and Oxn containing cyclic peptides, lissoclinamides 9 (9) and 10 (10) isolated from the Indo-Pacific ascidian (seasquirt) Lissoclinum patella have delineated their metal binding selectivity. MS and CD competition studies show that lissoclinamide 10 (10) shows selectivity for Cu2+ in the presence of an excess of Zn2+ whereas lissoclinamide 9 (9) is less selective for Cu2+. Comparison...
Studies on three Thz, and Oxn containing cyclic peptides, patellamide A and C (1, 3) and ulithiacyclamide A (9) isolated from the Indo-Pacific ascidian (seasquirt) Lissoclinum patella have delineated their metal binding selectivity. Patellamide C (3) shows extreme selectivity for Cu2+ even in the presence of an excess of Zn2+ and shows no binding at all to Co2+, Ni2+ and Hg2+. Patellamide A (1) is...
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