中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | (2E,2′E)-3,3′-(5,5′-dibromo-6,6′-dihydroxybiphenyl-3,3′-diyl)-bis[2-(hydroxyimino)propanoic] acid | 1394295-98-7 | C18H14Br2N2O8 | 546.126 |
—— | (2E,2′E)-dimethyl 3,3′-(5,5′-dibromo-6,6′-dihydroxybiphenyl-3,3′-diyl)bis[2-(hydroxyimino)propanoate] | 83030-48-2 | C20H18Br2N2O8 | 574.18 |
—— | dimethyl (2E,2′E)-3,3′-(6,6′-dihydroxybiphenyl-3,3′-diyl)bis-[2-(hydroxyimino)propanoate] | 1394295-97-6 | C20H20N2O8 | 416.387 |
Seven novel metabolites, each originating from four bromotyrosine units, have been isolated from the sponge Ianthella basta. Bastadin-1 (2), bastadin-2(3) and bastadin-3(4) are derived from a single phenol oxidative coupling whilst the macrocyclic compounds bastadin-4(5), bastadin-5(6), bastadin-6(8) and bastadin-7(7) are formed by two phenol oxidative coupling reactions. Compounds (2)-(8) showed potent in vitro antimicrobial activity against Gram-positive organisms.