Olga V. Gulyakevich , I L. Rubinova , Dmitry B. Rubinov and Alexander L. Mikhal'chuk
The annelation reaction of Schiff bases by ββ'-tricarbonyl compounds has been extended to 3-ethoxyimino derivatives of 2-acyl-cyclohexane-1,3-diones. The first direct synthesis of 8-aza-D-homogonanes with a modified carbonyl group at the pharmacologically significant C(17a) position has been carried out.