Reaction of hydroxyl-protected derivatives of hydroxyalkoxyamines (3a, b, c) with either 4, 6- dichloro-2, 5-diformamidopyrimidine (5) or 4, 6-dichloro-5-formamidopyrimidine (31) and subsequent cyclization of the resultant 6-(alkoxyamino) pyrimidines (6, 17, 32, 35) by heating with diethoxymethyl acetate afforded 9-alkoxy-6-chloropurines (7, 18, 33, 36), which were converted subsequently to 9-(3-hydroxypropoxy)-and 9-[3-hydroxy-2-(hydroxy- ...
![6-chloro-9-[(2,2-dimethyl-1,3-dioxan-5-yl)methoxy]-2-formamidopurine Structure](https://image.chemsrc.com/caspic/294/114778-41-5.png)
