反应详情

A procedure similar to that described in Preparation 4 was repeated, except that 0.25 g of 2-hydroxymethyl-5-methoxy-3-methylimidazo[5,4-b]pyridine (prepared as described in Preparation 69), 0.66 g of 5-(4-hydroxy-benzyl)-3-triphenylmethylthiazolidine-2,4-dione, 0.35 ml of tributylphosphine, 0.36 g of 1,1'-(azodicarbonyl) di-piperidine and 15 ml of toluene were used, to give the title compound as a crude product. This crude product was purified by column chromatography through silica gel, using a 1:1 by volume mixture of hexane and ethyl acetate as the eluent, to give 0.70 g of the title compound, melting at 80-85° C. (softening).

1. customA procedure similar to that described in Preparation 4