Methyl rac -(2 R ,11 S ,12 R )-12-(2-chlorophenyl)-22-oxo-9,13,21-trioxapentacyclo[12.8.0.0 2,11 .0 3,8 .0 15,20 ]docosa-1(14),3,5,7,15(20),16,18-heptaene-11-carboxylate

In the title compound C27H19ClO6, the coumarin ring system is not exactly planar, with a dihedral angle of 4.12 (7)° between its benzene and lactone rings. The cis-fused pyran rings adopt half-chair conformations. The carbomethoxy and chlorophenyl groups are in a trans configurati...

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Bibliographic Details
Published inActa crystallographica. Section E, Structure reports online Vol. 67; no. 10; p. o2673
Main Authors Swaminathan, K., Sethusankar, K., Sivakumar, G., Bakthadoss, M.
Format Journal Article
LanguageEnglish
Published International Union of Crystallography 01.10.2011
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Summary:In the title compound C27H19ClO6, the coumarin ring system is not exactly planar, with a dihedral angle of 4.12 (7)° between its benzene and lactone rings. The cis-fused pyran rings adopt half-chair conformations. The carbomethoxy and chlorophenyl groups are in a trans configuration. The crystal packing is stabilized by intermolecular C—H...O interactions, which produce a centrosymmetric R22(14) dimer and two centrosymmetric R22(18) dimers connecting the molecules in a two-dimensional fashion.
ISSN:1600-5368
1600-5368
DOI:10.1107/S1600536811037196