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(R)-3,4,5-Tride-oxy-5,6-didehydro-1,2-O-(2,2,2-trichloro-ethyl-idene)-?-d-gluco-furan-ose-6,3-carbolactone: a new derivative of ?-chloralose.

ABSTRACT: THE TITLE COMPOUND [SYSTEMATIC NAME: (R)-2-trichloro-methyl-3a,3b,7a,8a-tetra-hydro-5H-pyrano[2',3':4,5]furano[2,3-d][1,3]dioxol-5-one], C(9)H(7)Cl(3)O(5), a triyclic system that contains a central ?-d-furan-ose ring cis-fused with a dioxolane ring as well as a ?-lactone ring, exhibits a twisted conformation. The CCl(3) group has an axial orientation. The furan-ose ring approximates an envelope conformation due to the ?,?-unsaturated lactone functionality. The asymmetric unit contains two independent mol-ecules with almost identical geometries.

SUBMITTER: Aburto-Luna V

PROVIDER: S-EPMC2960566 | biostudies-literature | 2008 Aug

REPOSITORIES: biostudies-literature

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(R)-3,4,5-Tride-oxy-5,6-didehydro-1,2-O-(2,2,2-trichloro-ethyl-idene)-α-d-gluco-furan-ose-6,3-carbolactone: a new derivative of α-chloralose.

Aburto-Luna Violeta V Meza-León Rosa-Luisa RL Bernès Sylvain S

Acta crystallographica. Section E, Structure reports online 20080820 Pt 9

THE TITLE COMPOUND [SYSTEMATIC NAME: (R)-2-trichloro-methyl-3a,3b,7a,8a-tetra-hydro-5H-pyrano[2',3':4,5]furano[2,3-d][1,3]dioxol-5-one], C(9)H(7)Cl(3)O(5), a triyclic system that contains a central α-d-furan-ose ring cis-fused with a dioxolane ring as well as a δ-lactone ring, exhibits a twisted conformation. The CCl(3) group has an axial orientation. The furan-ose ring approximates an envelope conformation due to the α,β-unsaturated lactone functionality. The asymmetric unit contains two indepe ...[more]

PMID: 21201764

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