title: Isolation of a new mycalolide from the marine sponge Mycale izuensis.
abstract: Bioassay-directed fractionation of the lipophilic extract of the marine sponge Mycale izuensis led to the isolation of cytotoxic mycalolides including a new compound, 30,32-dihydroxymycalolide A (1). Its structure including absolute stereochemistry was deduced by spectroscopic and chemical methods. Compound 1 was cytotoxic against HeLa cells with an IC(50) value of 2.6 ng/mL.
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: Preecha
authors.initials: P
authors.lastname: Phuwapraisirisan
authors.forename: Shigeki
authors.initials: S
authors.lastname: Matsunaga
authors.forename: Rob W M
authors.initials: RW
authors.lastname: van Soest
authors.forename: Nobuhiro
authors.initials: N
authors.lastname: Fusetani
mesh_terms: D000818:Animals; D000970:Antineoplastic Agents / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D002851:Chromatography, High Pressure Liquid; D004354:Drug Screening Assays, Antitumor; D005260:Female; D006367:HeLa Cells / Q000187:drug effects; D006801:Humans; D020128:Inhibitory Concentration 50; D007564:Japan; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D010080:Oxazoles / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D011161:Porifera / Q000737:chemistry*; D014407:Tumor Cells, Cultured / Q000187:drug effects; D002583:Uterine Cervical Neoplasms
chemical_list: C464997:30,32-dihydroxymycalolide A; D000970:Antineoplastic Agents; D010080:Oxazoles