Acta Crystallographica Section E (Oct 2010)
tert-Butyl N-[(11-exo-benzyloxycarbonyl-8-oxopentacyclo[5.4.0.02,6.03,10.05,9]undecane-11-endo-yloxy)carbonylmethyl]carbamate
Abstract
The structure of the title compound, C26H29NO7, at 173 K has an intermolecular N—H...O hydrogen bond. This is one of the few examples where a mono-ketone pentacycloundecane (PCU) molecule exibits hydrogen bonding in the solid state. The dihedral angles of the amide and ester groups are normal and unaffected by the cage structure. A longer than normal C—C bond [1.571 (4) Å] was found within the cage structure.