title: Asymmetric total synthesis and formal total synthesis of the antitumor sesquiterpenoid (+)-eremantholide A.
abstract: [structure: see text]. A new asymmetric total synthesis of (+)-eremantholide A is reported in which a Hoveyda-Grubbs ring-closing metathesis (RCM) reaction is used to assemble the nine-membered oxonin ring, and an enolate alkylation between the 3(2H)-furanone 2 and O-triflate 3 is exploited for C(9)-C(10) bond construction. An Evans asymmetric aldol reaction and a Sharpless asymmetric epoxidation served to stereoselectively install the C(6), C(7), and C(8) stereocenters of the target structure.
authors.affiliation: The UCL Center for Chemical Genomics, The Christopher Ingold Laboratories, The Chemistry Department, University College London, London, UK.
authors.forename: Yi
authors.initials: Y
authors.lastname: Li
authors.forename: Karl J
authors.initials: KJ
authors.lastname: Hale
mesh_terms: D000478:Alkylation; D000972:Antineoplastic Agents, Phytogenic / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology; D045744:Cell Line, Tumor; D049109:Cell Proliferation / Q000187:drug effects; D003500:Cyclization; D006801:Humans; D015394:Molecular Structure; D010084:Oxidation-Reduction; D012717:Sesquiterpenes / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology; D013237:Stereoisomerism
chemical_list: D000972:Antineoplastic Agents, Phytogenic; D012717:Sesquiterpenes; C519468:eremantholide A