Crystal structure of 7-isopropyl-1,4a,N-trimethyl-1,2,3,4,4a,4b,5,6,7,8,10,10a-dodecahydrophenanthrene-1-carboxamide

Abstract

In the title compound, C26H37NO, a new derivative of dihydroabietic acid, the two cyclohexene rings adopt half chair conformations, whereas the cyclohexane ring has a chair conformation. Each of the methyl groups is in an axial position with respect to the tricyclic hydrophenanthrene residue. In the crystal packing, methylene-C—H...π(phenyl) interactions lead to supramolecular helical chains along [010]; the amide-H atom does not form a significant intermolecular interaction owing to steric pressure.

Keywords

• crystal structure
• dihydroabietic acid derivative
• C—H...π interactions