Geh. Elgemeie et Ha. Ali, ANTIMETABOLITES - A CONVENIENT SYNTHESIS OF MERCAPTOPURINE AND THIOGUANINE ANALOGS, Phosphorus, sulfur and silicon and the related elements, 90(1-4), 1994, pp. 143-146
A novel synthesis of 7-mercaptomethylpyrazolo[1,5-a]pyrimidines and py
razolo[4,3:6',7']pyrazolo[1,5-a]pyrimidines utilizing ketene dithioace
tals and 5-aminopyrazoles as starting components is described.