| abstract |
(57) [Summary] The present invention provides a compound represented by the following formula (I): (Where X is a halogen atom, D represents a residue of a pentagonal or hexagonal ring which may be substituted or unsaturated, and R 1 , R 2 , R 3 , R 4 , X Is as described in the specification). The invention also relates to methods for their preparation and intermediates, their use as medicaments and pharmaceutical compositions containing them. |