title: Thiomycalolides: new cytotoxic trisoxazole-containing macrolides isolated from a marine sponge Mycale sp.
abstract: Two new cytotoxic trisoxazole macrolides, thiomycalolides A (2) and B (3), have been isolated from a marine sponge Mycale sp. The structures were determined to be glutathione adducts of mycalolides A and B by interpretation of spectral data and chemical transformation. Thiomycalolides A and B are highly cytotoxic against P388 murine leukemia cells.
authors.affiliation: Laboratory of Aquatic Natural Products Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Bunkyo-ku, Tokyo 113-8657, Japan.
authors.forename: S
authors.initials: S
authors.lastname: Matsunaga
authors.forename: Y
authors.initials: Y
authors.lastname: Nogata
authors.forename: N
authors.initials: N
authors.lastname: Fusetani
mesh_terms: D000818:Animals; D000970:Antineoplastic Agents / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology*; D004354:Drug Screening Assays, Antitumor; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D009842:Oligopeptides / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology*; D010080:Oxazoles / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology*; D011161:Porifera / Q000737:chemistry*; D014407:Tumor Cells, Cultured
chemical_list: D000970:Antineoplastic Agents; D009842:Oligopeptides; D010080:Oxazoles; C112725:thiomycalolide A; C112726:thiomycalolide B