Benzazepinone calcium channel blockers. 3. Synthesis and structure-activity studies of 3-alkylbenzazepinones
                                
                                    
                                        作者:Jagabandhu Das、David M. Floyd、S. David Kimball、Keith J. Duff、Michael W. Lago、Robert V. Moquin、Ving G. Lee、Jack Z. Gougoutas、Vu Chi Truc                                    
                                    
                                        DOI:10.1021/jm00082a019
                                    
                                    
                                        日期:1992.2
                                    
                                    As part of a program aimed at identifying novel analogues of diltiazem, we developed several synthetic routes for 3-alkylbenzazepinones, both in racemic and nonracemic form.  Structure-activity relationship studies in this series have led to identification of several analogues as potent calcium channel blocking agents, both in vitro and in vivo.  Analogues containing a 6-trifluoromethyl substituent (17a and 17b) are the most potent vasorelaxants in vitro.  The oral antihypertensive activity of these compounds is comparable to its 3-acetoxy derivative 1 (X = 6-CF3) and 8-chlorodiltiazem (2b).  The 3-allyl analogue 17c is a more potent antihypertensive agent than 17a, 17b, or 8-chlorodiltiazem (2b), and has a longer duration of action in vivo.