| abstract |
A compound of the formula <CHEM> wherein Ar represents the group <CHEM> wherein Y is bound in the 2-,3-, or 4-position and represents a lower alkyl or lower alkoxy group, a halogen, a trifluoromethyl group or an amino, mono- or di-lower alkylamino group, or Ar represents a pyridyl group bound in the 2-, 3-, 4-position, X represents hydrogen, a lower alkyl or lower alkoxy group, a halogen, a trifluoromethyl group or an amino, mono- or dilower alkylamino group, R represents a lower alkyl group, and R<1> represents hydrogen or a lower alkyl group, whereby "lower" indicates a group having up to 3 carbon atoms; and wherein R min is a hydrogen atom or an alkyl, an acyl or an alkylsulfonyl group having 1-3 carbon atoms; <CHEM> wherein Ar, X, and R have the meaning defined in (a) above; <CHEM> wherein Ar, X, and R have the meaning defined in (a) above; <CHEM> wherein Ar, X, R and R<1> have the meaning defined in above; <CHEM> wherein Ar, X, R, and R<1> have the meaning defined in (a) above and Z represents F, Cl, Br, I, OSO2R min , wherein R min is an alkyl, aralkyl, or aryl group; <CHEM> wherein Ar, X, and R have the meaning defined in (a) above. n[EP0028682A2] |