| abstract |
A compound of formula (I), its preparation and pharmaceutical compositions containing as active ingredient a compound of formula (I) are disclosed, wherein: R1 represents a -NHCOR4 or -N(R5)-Y-R6 radical; Y is SO2; R4 represents an -alk-SO2R11, -alk-SO2-CH=CH-R11, Het substituted by -SO2R11 or phenyl substituted by -SO2-R11 or -alk-SO2-R11 radical; R5 represents a hydrogen atom or an alkyl radical; R6 represents a phenylalkyl radical, Het or Ar; wherein alk, Ar and R11 are as defined in the specification. |