title: Assignment of absolute stereochemistry and total synthesis of (-)-spongidepsin.
abstract: [structure: see text] An enantioselective total synthesis of (-)-spongidepsin (2) and elucidation of the absolute stereochemistry of its four stereocenters are described. Spongidepsin (2), a 13-membered depsipeptide isolated from the Vanuatu marine sponge Spongia sp., has shown potent antitumor properties against a variety of NCI tumor cell lines. Our synthesis is convergent, and the absolute stereochemistry of four of the five chiral centers was assigned through synthesis.
authors.affiliation: Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, Chicago, Illinois 60607, USA. arunghos@uic.edu
authors.forename: Arun K
authors.initials: AK
authors.lastname: Ghosh
authors.forename: Xiaoming
authors.initials: X
authors.lastname: Xu
mesh_terms: D000818:Animals; D045744:Cell Line, Tumor; D002470:Cell Survival / Q000187:drug effects; D047630:Depsipeptides / Q000138:chemical synthesis* / Q000494:pharmacology; D006801:Humans; D008968:Molecular Conformation; D011161:Porifera / Q000737:chemistry*; D013237:Stereoisomerism; D013329:Structure-Activity Relationship
chemical_list: D047630:Depsipeptides; C498389:spongidepsin