(2R,3S,5S)-3-(Benzyloxy)-5-(6-(benzyloxy)-2-(4-((methoxyphenyl)diphenylmethylamine)-9-h-purin-9-yl)-2-(benzyloxymethyl)cyclopentanol

entecavir intermediate v ; (1s,3r,4s)-3-(benzyloxy-5-[6-(benzyloxy)-2 -((4-methoxyphenyl)diphenylmethylamino) -9h- purin-9-yl]-2-(benzyloxymethyl)cyclopentanol ; entecavir e5 ; (2r,3s,5s)-3-(benzyloxy)-5-[2-[[(4-methoxyphenyl)diphenylmethyl]amino]-6-(phenylmethoxy)-9h-purin-9- ; entecavir-5 ; (1s,2s,3s,5s)-3-benzyloxy)-5(6-benzyloxy)-2-((4-methoxyphenyl)diphenylmethylamino)-9h-purin-9-yl)-2-(benzyloxymeth ; (2r,3s,5s)-3-(benzyloxy)-5-(6-benzyloxy)-2-(4-methyoxyphenyl)diphenylmethylamino)-9h-purin-9-yl)-2-benzyloxymethyl)cyclopentanol ; entecavir intermediate (5th) ; entecavir intermediate (cas # 142217-78-5) ; (1s,2s,3s,5s)-3-(benzyloxy)-5-(6-(benzyloxy)-2-(((4-methoxyphenyl)diphenylmethyl amino)-9h-purin-