Patent ID: 7115736
Filing Date: 2006-10-03
Classification: C07D,C07F

Abstract:
1. A process for preparing an imidazopyran derivative of the following formula (9), wherein R which comprises reacting dinitroimidazole of the following formula (1), wherein R with 2,3-epoxy-1-propanol of the following formula (2), in the presence of a fluoride salt to prepare a diol compound of the following formula (3), wherein R reacting this compound (3) with a silyl halide of the following formula (4), wherein R wherein R reacting this compound (5) with a compound of the following formula (6), wherein R to prepare a compound of the following formula (7), wherein R desilylating and cyclizing this compound (7) to prepare a compound of the following formula (8), wherein R and then deprotecting this compound (8) in the presence of metallic catalyst to prepare above imidazopyran derivative (9).