An efficient method for the preparation of 8-(polyhydroxyalkyl)-7H-purine-2,6(1H,3H)-diones 5 starting from 6-chloro-1,3-dimethylpyrimidine-2,4(1H,3H)-dione (1) and 1-amino-1-deoxypentitols or -hexitols 2 via 1,3-dimethyl-6-(polyhydroxyalkylamino)-pyrimidine-2,4(1H,3H)-diones 3 and their 5-nitrosoderivatives 4 is described.
一种以6-
氯-1,3-二
甲基嘧啶-2,4(1H,3H)-二酮为原料制备8-(多羟基烷基)-7H-
嘌呤-2,6(1H,3H)-二酮5的有效方法描述了通过1,3-二甲基-6-(多羟基烷基
氨基)-
嘧啶-2,4(1H,3H)-二酮3及其5-亚硝基衍
生物4制备(1)和1-
氨基-1-脱氧戊糖醇或己糖醇2。