Patent ID: 7057036

Claim:
A process for preparing a compound of formula (Ia): wherein the ring P is: and is a pyrrole ring represented by the following structure: in which R is an alkyl group, a cycloalkyl group, a cycloalkyl-alkyl group or a substituted or unsubstituted aralkyl group; A is a substituted or unsubstituted alkylene group, a substituted or unsubstituted alkenylene group or a substituted or unsubstituted alkynylene group; Y is a group having the following formula: in which E 1 and E 2 each independently is a hydrogen atom or a lower alkyl group; W represents CH, C═ or a nitrogen atom; with the provisos that: when W represents CH, then m is 0 or 1 and B represents a carbonyl group, a sulfonyl group, an alkylene group, an alkenylene group, a group —C(OH)R 2 — in which R 2 represents a substituted or unsubstituted aryl group, a group —CHR 3 — in which R 3 represents a substituted or unsubstituted aryl group, or a substituted or unsubstituted cyclic or acyclic acetal group; when W represents C═, then m is 1 and B is a group: in which the double bond is coupled with W and R 4 represents a substituted or unsubstituted aryl group or a substituted or unsubstituted aralkyl group; and when W represents a nitrogen atom, then m is 0 or 1 and B is a carbonyl group, a sulfonyl group, an alkylene group, an alkenylene group or a group —CHR 5 — in which R 5 represents a substituted or unsubstituted aryl group; and D represents a substituted or unsubstituted aromatic hydrocarbon group or a substituted or unsubstituted aromatic heterocyclic group; and l is 0 or 1; which process comprises: reacting a compound of formula (VI) with a compound of formula (II), wherein: the compound of formula (VI) is: X—A—Y (VI), where X is an eliminative group; A and Y are defined above; and wherein the compound of formula (II) is: wherein the ring P and l are defined above.