A new route for the preparation of 4-amino-1-(β-D-ribofuranosyl)pyrazolo[3,4-d]pyrimidine (5)(6-azatubercidin) is described. The anomeric configuration of the product has been established unequivocally for the first time by cyclonucleoside formation, and agrees with previously reported anomeric assignments.
G. R. Revankar and L. B. Townsend, J. Chem. Soc. C, 1971, 2440 DOI: 10.1039/J39710002440
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