RESOLUTION, ABSOLUTE CONFIGURATION, AND PHOTORACEMIZATION OF CHIRAL TROPONOID ACETALS, CYCLOHEPTA[2,1-b:2,3-b′]DI[1,4]BENZOXAZINES
- 5 July 1984
- journal article
- research article
- Published by Oxford University Press (OUP) in Chemistry Letters
- Vol. 13 (7) , 1149-1152
- https://doi.org/10.1246/cl.1984.1149
Abstract
The title chiral troponoid compounds were resolved in optically pure forms by high-performance liquid chromatography on a chiral poly(triphenylmethyl methacrylate) column. The compounds showed large optical rotations. The absolute configuration of (−)-3,12-dichloro derivative was found to be R by X-ray analysis. Resolved enantiomers were racemized upon UV irradiation in solution.Keywords
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