title: Total synthesis of (-)-exiguolide.
abstract: Total synthesis of (-)-exiguolide, the natural enantiomer, has been accomplished for the first time. The bis(tetrahydropyran) subunit was efficiently synthesized via consecutive olefin cross-metathesis/intramolecular oxa-conjugate addition/reductive etherification. Construction of the 20-membered macrocycle was achieved by Yamaguchi macrolactonization. Stereoselective introduction of the (E,Z,E)-triene side chain via Suzuki-Miyaura coupling completed the total synthesis.
authors.affiliation: Laboratory of Biostructural Chemistry, Graduate School of Life Sciences, Tohoku University, 1-1 Tsutsumidori-amamiya, Aoba-ku, Sendai 981-8555, Japan. hfuwa@bios.tohoku.ac.jp
authors.forename: Haruhiko
authors.initials: H
authors.lastname: Fuwa
authors.forename: Makoto
authors.initials: M
authors.lastname: Sasaki
mesh_terms: D001688:Biological Products / Q000138:chemical synthesis* / Q000737:chemistry; D018942:Macrolides / Q000138:chemical synthesis* / Q000737:chemistry; D008387:Marine Toxins / Q000138:chemical synthesis* / Q000737:chemistry; D015394:Molecular Structure; D013237:Stereoisomerism
chemical_list: D001688:Biological Products; D018942:Macrolides; D008387:Marine Toxins; C527475:exiguolide