are prepared by modification of the formyl group in compounds (I) containing an asymmetric spiro carbon atom. Their 1 H-NMR and X-ray crystallographic analysis are presented. -(BULANOV, A. O.; SAFOKLOV, B. B.; LUK'YANOV, B. S.; TKACHEV, V. V.; MINKIN, V. I.; ALDOSHIN, S. M.; ALEKSEENKO, Y. S.; Chem. Heterocycl. Compd. (N. Y.) 39 (2003) 3, 308-314; Inst. Phys. Org. Chem., Rostov State Univ., Rostov-on-Don 344090, Russia; Eng.) -F. Santoso 44-155