Michael reaction was performed using unsaturated ester 4 instead of the unsaturated aldehyde to suppress reactivity, resulting in lactam rac-8 that underwent cyclization after Michael addition, see Fig. Although we successfully synthesized known intermediate rac-3, asymmetric Michal reaction using organocatalyst would not be possible if unsaturated ester 4 is used. We therefore changed our plans and attempted diastereoselective Michael reaction using an ester having a chiral auxiliary.