| abstract |
Title cpds to the formula , in which R1 = C1-C4 alkyl or C1-C4 alkoxy and R2=C1-C4 alkyl, X eithers of the gps -CO- or -SO2 and Y=H or Cl. If y=H, R3=C1-C4 alkyl and R4 = C1-C4 alkyl, C3-C6 cycloalkyl or a monosubstd phenyl gp (substit. is halogen or C1-C4 alkyl) or in cases where X = CO, R4 may also be H. Further, R3 and R4 together with N and X may represent a 5 to 7 membered heterocyclic ring contg. at least one -CO-or-SO2-gp. If Y=Cl, R3 = C1-C4 alkyl or an unsubst. or halogen or C1-C4 alkyl subst. phenyl gp and provided R3 is an alkyl gp R4 is an unsubst or halogen, C1-C4 alkyl and/or NO2 subst. phenyl gp. Similarly, if R3 is a subst. phenyl gp, R4 is a C1-C4 alkyl gp and if X= -CO- may also be H. |