Novel xanthine oxidase inhibitor studies. Part 3.1 Convenient and general syntheses of 3-substituted 7H-pyrazolo[4,3-e]-1,2,4-triazolo[4,3-c]pyrimidin-5(6H
)-ones as a new class of potential xanthine oxidase inhibitors
Abstract
Convenient and general syntheses of 3-substituted 7H-pyrazolo[4,3-e]-1,2,4-triazolo[4,3-c]pyrimidin-5(6H)-ones (12), a new class of potent
]pyrimidines (3 and 11) with 70%
]pyrimidine 2 or