(A) Cpds. (I) and (II): R' = alkyl opt. subst. by opt. subst. aryl, oxo, O-acyl, O-alkyl, O-aralkyl, CO2-alkyl, CO2-aralkyl, carbamoyloxy, opt. subst. carbamoyl

摘要

(A) Cpds. (I) and (II): R' = alkyl opt. subst. by opt. subst. aryl, oxo, O-acyl, O-alkyl, O-aralkyl, CO2-alkyl, CO2-aralkyl, carbamoyloxy, opt. subst. carbamoyl, -CONH2 (opt. substd.), alkenyl, CN, alkyl-S-, aralkyl-S-, alkyl-SO-, aralkyl-SO-, alkyl-SO2-, aralkyl-SO2-, aryl-SO2-, heteroalkyl, OH, CO2H or halogen; or opt. subst. aryl Q = alkylene, alkylidene, alkenylene, or aralkylene W = NO2, CN, Ph, or H, and P = H or NO2 with the proviso that at least one of W and P = NO2 A = O or S M = O or S R3 and R4 = H, alkyl opt. subst. by halogen, OH, Oalkyl, CO2-alkyl, CO2-aralkyl, O-acyl, opt. subst. carbamoyl, opt. subst. sulphamoyl, SH, S-alkyl, S-aralkyl, thionocarbamoyl, opt. subst. dithiocarbamoyl, or heteroalkyl, opt. subst. aryl, OH, O-alkyl, O-aralkyl, O-aryl, or NH2 opt. subst. by carbamoyl, thiocarbamoyl, alkylidene, aralkylidene, acyl or subst. acyl or R3 and R4 together with N, form a heterocyclic alkyl residue.