(1S,2S,3S,5S)-3-(Benzyloxy)-5-(6-(benzyloxy)-2-(((4-methoxyphenyl)diphenylmethyl)amino)-9H-purin-9-yl)-2-((benzyloxy)methyl)cyclopentanol

entecavir intermediate v

entecavir-5

(2R,3S,5S)-3-(Benzyloxy)-5-[2-[[(4-methoxyphenyl)diphenylmethyl]amino]-6-(phenylmethoxy)-9H-purin-9-yl]-2-(benzyloxymethyl)cyclopentanol

(2R,3S,5S)-3-(Benzyloxy)-5-[2-[[(4-methoxyphenyl)diphenylmethyl]amino]-6-(phenylmethoxy)-9H-purin-9-yl]-2-a(benzyloxymethyl)cyclopentanol

(2R,3S,5S)-3-(Benzyloxy)-5-(6-benzyloxy)-2-(4-methyoxyphenyl)diphenylmethylamino)-9H-purin-9-yl)-2-benzyloxymethyl)cyclopentanol

Entecavir intermediate N5

(1S,2S,3S,5S)-3-(benzyloxy)-5-(6-(benzyloxy)-2-((4-methoxyphenyl)diphenylmethylamino)-9H-purin-9-yl)-2-((4-methylbenzyloxy)methyl)cyclopentanol

Entecavir intermediate 5

Intermediate of Entecavir 3

(1S,2S,3S,5S)-3-(benzyloxy-5-(6-(benzyloxy)-2-(diphenyl(p-tolylamino)methylamino)-1H-purin-9(6H)-yl-2-(benzyloxymethyl)cyclopentanol

(2R,3S,5S)-3-(Benzyloxy)-5-[2-[[(4-methoxyphenyl)diphenylmethyl]a