title: Two new naturally occurring optical polyacetylene compounds from Torricellia angulata var intermedia and the determination of their absolute configurations.
abstract: Four compounds were isolated from Torricellia angulata var intermedia (Harms.) Hu (Torricelliaceae), followed by formation of derivatives, which gave two new polyacetylene compounds 3 and 4 with respectively a chiral carbon center whose absolute configurations were determined unambiguously by the recently developed extended Mosher's method. This is the first time to obtain natural polyacetylenes possessing a chiral hydroxyl group.
authors.affiliation: Ecole Normale Supériuer, Département de Chimie, UMR CNRS 8642, 24 rue Lhomond, 75231 Paris Cedex 05, France.
authors.forename: Weidong
authors.initials: W
authors.lastname: Pan
authors.forename: Yongmin
authors.initials: Y
authors.lastname: Zhang
authors.forename: Bixue
authors.initials: B
authors.lastname: Xu
authors.forename: Peixue
authors.initials: P
authors.lastname: Cao
authors.forename: Guangyi
authors.initials: G
authors.lastname: Liang
mesh_terms: D002681:China; D009682:Magnetic Resonance Spectroscopy; D019684:Magnoliopsida / Q000737:chemistry*; D013058:Mass Spectrometry; D015394:Molecular Structure; D018517:Plant Roots / Q000737:chemistry*; D010946:Plants, Medicinal / Q000737:chemistry*; D053279:Polyynes / Q000737:chemistry* / Q000302:isolation & purification
chemical_list: C518343:(8R)-deca-2-trans-2-ene-4,6-diyn-1,8-diol; C518344:(8S)-deca-2-trans-2,9-diene-4,6-diyn-1,8-diol; D053279:Polyynes