Patent ID: 6900307
Filing Date: 2005-05-31
Classification: A61P,C07H

Abstract:
1. A 2-aminopurine derivative represented by the following general formula (1): where R represents any substituent group selected from the group consisting of hydrogen and acyl groups, X represents any substituent group selected from the group consisting of a phosphoramidityl group and oligonucleotides, Y represents any substituent group selected from the group consisting of a dimethoxytrityl group and oligonucleotides, and Z 1 , Z 2 , Z 3 , Z 4 and Z 5 are the same or different and represent any substituent group selected from the group consisting of hydrogen, hydroxyl, amino, lower alkyl, alkoxy, carboxyl and sulfonic acid groups, provided that Z 1 , Z 2 , Z 3 , Z 4 and Z 5 are not all hydrogen, or a pharmaceutically-acceptable salt thereof.