European Journal of Medicinal Chemistry p. 333 - 337 (1995)
Update date:2022-08-02
Topics:
Guccione
Raffaelli
Barretta
Scolaro
Pucci
Russo
The final ring closure reaction of 2-phenylamino-3-aminopyrazolo[3,4-d]pyrimidin-4-ones with triethylorthoformate in the synthesis of 1H-pyrazolo[3,4-d][1,2,4]-8H-triazolo[2,3-a]-4H-pyrimidin-4-one derivatives, unexpectedly gave both the desired product a
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