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

摘要

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 R 2 2(14) dimer and two centrosymmetric R 2 2(18) dimers connecting the mol­ecules in a two-dimensional fashion.