Crystal structure of (E)-1-(4-chlorophenyl)ethanoneO-dehydroabietyloxime

The title compound, C28H34ClNO2{systematic name: (E)-1-(4-chlorophenyl)ethanoneO-[(1R,4aS,10aR)-7-isopropyl-1,4a-dimethyl-1,2,3,4,4a,9,10,10a-octahydrophenanthrene-1-carbonyl]oxime}, was synthesized from dehydroabietic acid. In the dehydroabietyl moiety, the central and terminal cyclohexane rings display chair and half-chair conformations, respectively, and atrans-ring junction. The C=N bond is in anEconformation and the C—O—N=C torsion angle is 148.1 (5)°. No directional interactions except van der Waals contacts occur in the crystal structure.

Crystal structure of (E)-1-(4-methoxyphenyl)ethanoneO-dehydroabietyloxime

In the title compound, C29H37NO3{systematic name: (E)-1-(4-methoxyphenyl)ethanoneO-[(1R,4aS,10aR)-7-isopropyl-1,4a-dimethyl-1,2,3,4,4a,9,10,10a-octahydrophenanthrene-1-carbonyl]oxime}, a new derivative of dehydroabietic acid, the two cyclohexane rings exhibit atrans-ring junction and are in chair and half-chair conformations. The C=N double bond exhibits anEconformation.