title: Stereoselective total synthesis of the acetylenic carotenoids alloxanthin and triophaxanthin.
abstract: Stereoselective total synthesis of the C(40)-diacetylenic carotenoid alloxanthin (1) and the C(31)-acetylenic apocarotenoid triophaxanthin (2) was accomplished by Wittig condensation of C(10)-dialdehyde 20 or C(16)-keto aldehyde 19, respectively, with C(15)-acetylenic tri-n-butylphosphonium salt 12.
authors.affiliation: Kobe Pharmaceutical University, Motoyamakita-machi, Higashinada-ku, Kobe 658-8558, Japan. y-yamano@kobepharma-u.ac.jp
authors.forename: Yumiko
authors.initials: Y
authors.lastname: Yamano
authors.forename: Mahankhali Venu
authors.initials: MV
authors.lastname: Chary
authors.forename: Akimori
authors.initials: A
authors.lastname: Wada
mesh_terms: D000114:Acetylene / Q000737:chemistry; D000447:Aldehydes / Q000737:chemistry; D015394:Molecular Structure; D013237:Stereoisomerism; D024341:Xanthophylls / Q000138:chemical synthesis*
chemical_list: D000447:Aldehydes; D024341:Xanthophylls; C574256:triophaxanthin; C006462:alloxanthin; D000114:Acetylene