Phosphoric acid benzotriazol-1-yl ester (2R,3S,5R)-2-(tert-butyl-dimethyl-silanyloxymethyl)-5-(2-diphenylacetylamino-6-hydroxy-purin-9-yl)-tetrahydro-furan-3-yl ester 2-chloro-phenyl ester

Phosphoric acid benzotriazol-1-yl ester (2R,3S,5R)-2-[bis-(4-methoxy-phenyl)-phenyl-methoxymethyl]-5-[6-(2-nitro-phenylsulfanylamino)-purin-9-yl]-tetrahydro-furan-3-yl ester 2-chloro-phenyl ester