PROCESS FOR PREPARING CARBONSTYRIL DERIVATIVES

摘要

Carbostyrils(I; R1 = H, lower alkyl, ph-lower alkyl, lower alkenyl, or lower alkyl; A = =C=O or =CH-OH, or -CH=CR2C or CH2CHR2; R2 = H or lower alkyl; B = lower alkylene; l= 1 when A = -CO-C or -CH(OH)- or = 0 or 1 when -CHCR2- or -CH2CHR2-; Z = =N-N3 or =C(R3R4); R3 = non-substituted or substituted ph, or lower alkylene dioxy- substituted ph, ph-lower alkyl or 1,2,3,4tetrahydronaphtyl; R4 = substituted ph; R5 = H, OH, or lower alkanoyl) useful as an antihistamine, were prepd. by the raction of II and III.