Sulfonamide lactams of the following formula
wherein X, R1, R2, R3, R4, R4a, R5, R5a, R6, R6a, R7 and R8 are as described herein, are provided which inhibitors of Factor Xa and are useful as anticoagulants in the treatment of cardiovascular diseases associated with thromboses.
<i>exo</i>-2-(Pyridazin-4-yl)-7-azabicyclo[2.2.1]heptanes: Syntheses and Nicotinic Acetylcholine Receptor Agonist Activity of Potent Pyridazine Analogues of (±)-Epibatidine
作者:Daqing Che、Thomas Wegge、Milton T. Stubbs、Gunther Seitz、Heinrich Meier、Christoph Methfessel
DOI:10.1021/jm000949w
日期:2001.1.1
A new strategy for the straightforwardsynthesis of novel racemic epibatidineanalogues is presented, in which the 2-chloropyridinyl moiety of epibatidine is bioisosterically replaced by differently substituted pyridazine rings. A key step of the new syntheses is the inverse type Diels-Alder reaction of the electron-rich enol ether 13 with the electron-deficient diazadiene systems of the 1,2,4, 5-tetrazines