Methyl rac-(2R,11S,12R)-12-(2-chlorophenyl)-22-oxo-9,13,21-trioxapentacyclo[12.8.0.02,11.03,8.015,20]docosa-1(14),3,5,7,15(20),16,18-heptaene-11-carboxylate
oleh: M. Bakthadoss, G. Sivakumar, K. Sethusankar, K. Swaminathan
| Format: | Article |
|---|---|
| Diterbitkan: | International Union of Crystallography 2011-10-01 |
Deskripsi
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.