6-heterocycyclyl pyrazolo[3,4-d]pyrimidin-4-ones and compositions and
申请人:Sterling Winthrop Inc.
公开号:US05541187A1
公开(公告)日:1996-07-30
Novel 6-heterocyclyl-pyrazolo[3,4-d]pyrimidin-4-ones, useful in treating cardiovascular disease, are prepared by reacting a 5-amino-1H-pyrazole-4-carboxamide with heterocyclyl-carboxaldehyde or by reacting a 5-amino-1H-pyrazole-4-carbonitrile with a heterocyclylcarboxamidine, followed by diazotization and hydrolysis of the resulting 4-amino-6-heterocyclyl-pyrazolo[3,4-d]pyrimidine.
6-heterocyclyl pyrazolo [3,4-d]pyrimidin-4-ones and compositions and
申请人:Sterling Winthrop Inc.
公开号:US05294612A1
公开(公告)日:1994-03-15
Novel 6-heterocyclyl-pyrazolo[3,4-d]pyrimidin-4-ones, useful in treating cardiovascular disease, are prepared by reacting a 5-amino-1H-pyrazole-4-carboxamide with heterocyclylcarboxaldehyde or by reacting a 5-amino-1H-pyrazole-4-carbonitrile with a heterocyclylcarboxamidine, followed by diazotization and hydrolysis of the resulting 4-amino-6-heterocyclyl-pyrazolo[3,4-d]pyrimidine.