| 摘要 |
The present invention concerns a process for preparing a compound having the Formula A; or a pharmaceutically acceptable salt or derivative thereof, or for preparing a substituted urea compound of Formula IIa, or a pharmaceutically acceptable salt or ester thereof, (Formula IIa) the process comprising the reaction of an imidazolyl intermediate of Formula IIa', with a carbamoyl halide of the formula: R1R2NC(=O)Hal, wherein Hal represents Cl, F, I or Br, wherein the intermediate of Formula IIa' is prepared by oxidation of the derivative of R5 and R6, R6-C(=O)CH2R5 to form a glyoxal intermediate R6-C(=O)(C=O)R5, which is subjected to treatment with ammonium hydroxide and an aldehyde R8CHO to provide the intermediate of Formula IIa', and wherein the compound substituents are as defined herein. |
