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A Chiral Tetrahydro-Gamma-Pyrannonecarboxylate Ester for Asymmetric Nazarov Cyclization

Bond, C.S., Leonard, G.A., Regan, A.C., Hunter, W.N., Andrews, J.F.P. (1994) A Chiral Tetrahydro-Gamma-Pyrannonecarboxylate Ester for Asymmetric Nazarov Cyclization. Acta Crystallographica Section C-Crystal Structure Communications, 50 . pp. 133-136. ISSN 0108-2701. (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided) (KAR id:20391)

The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided.

Abstract

(1S,2-exo)-1-[(N,N-Dicyclohexylamino)sulfonylme-thyl]-7,7-dimethylbicycl o[2.2.1]heptan-2-yl [2R(2alpha,-3beta,5beta,6alpha)]-tetrahydro-2,5,6-trimethyl-4-oxo-2H-py- ran-3-carboxylate, C31H51NO6S, has an asymmetric unit containing two unique but similarly conformed molecules (A and B). In molecule A the cyclohexyl rings are free to crystallize in either of the approximately coplanar conformations. whereas in molecule B only one conformation is allowed. The N atoms in each molecule have approximately planar geometries, as expected from previous related structures. The tetrahydropyranone ring adopts the chair conformation with all substituents equatorial.

Item Type: Article
Subjects: A General Works
Divisions: Central Services
Depositing User: P. Ogbuji
Date Deposited: 26 Aug 2009 21:01 UTC
Last Modified: 16 Nov 2021 09:58 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/20391 (The current URI for this page, for reference purposes)

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