Crystal structure of 7-isopropyl-1,4a,N-trimethyl-1,2,3,4,4a,4b,5,6,7,8,10,10a-dodeca-hydro-phenanthrene-1-carb-ox-amide.
2015
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.
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