反应详情

The title compound is prepared from acetic acid (2R,3R,4R,5S)-4-acetoxy-5-(3-acetoxymethyl-isoxazol-5-yl)-2-(2,6-dichloro-purin-9-yl)-tetrahydro-furan-3-yl ester (WO 99/38877) analogously to (2R,3R,4S,5S)-2-[2-chloro-6-(2,2-diphenyl-ethylamino)-purin-9-yl]-5-(3-hydroxymethyl-isoxazol-5-yl)-tetrahydro-furan-3,4-diol (Intermediate CG) by replacing 2,2-diphenylethylamine with 4,4′-(2-aminoethylidene)bisphenol (Intermediate A).