结构类型3和4的4 H -3,1-苯并恶嗪-4-酮可通过环化反应获得。通过Wohl-Ziegler溴化和随后与亚磷酸三烷基酯的Michaelis-Arbuzow反应来实现膦酸酯基团的引入。对离体的左心房,回肠标本和Langendorff心脏的药理研究以及对麻醉大鼠的体内循环研究显示,膦酸酯4具有钙拮抗作用。而2-(芳基乙烯基)苯并恶嗪酮引起明显的负性变力作用,化合物3e 对平滑肌组织表现出松弛作用,并显着增加了通过Langendorff心脏的冠状动脉血流量。
2-Aryl-substituted 4<i>H</i>-3,1-benzoxazin-4-ones as novel active substances for the cardiovascular system
作者:Ulrich Rose
DOI:10.1002/jhet.5570280836
日期:1991.12
4H-3,1-Benzoxazin-4-ones of the structural types 3 and 4 are accessible by cyclization reactions. The introduction of the phosphonate group was achieved by way of Wohl-Ziegler bromination and subsequent Michaelis-Arbuzow reaction with a trialkyl phosphite. Pharmacological investigations on isolated left atria, ileum specimens, and Langendorff hearts as well as in vivo circulatory studies on anesthetized
结构类型3和4的4 H -3,1-苯并恶嗪-4-酮可通过环化反应获得。通过Wohl-Ziegler溴化和随后与亚磷酸三烷基酯的Michaelis-Arbuzow反应来实现膦酸酯基团的引入。对离体的左心房,回肠标本和Langendorff心脏的药理研究以及对麻醉大鼠的体内循环研究显示,膦酸酯4具有钙拮抗作用。而2-(芳基乙烯基)苯并恶嗪酮引起明显的负性变力作用,化合物3e 对平滑肌组织表现出松弛作用,并显着增加了通过Langendorff心脏的冠状动脉血流量。
Acrylamidobenzoic acid derivatives and their use
申请人:Sawai Pharmaceutical Co., Ltd.
公开号:US05006548A1
公开(公告)日:1991-04-09
Compounds of the general formula: ##STR1## wherein R.sup.1 is heterocyclic group other than pyridyl and which is unsubstituted or substituted with lower alkyl or lower alkoxycarbonyl, R.sup.2 is hydrogen, halogen, or nitro, and R.sup.3 is carboxy group or its functional derivative, with the proviso that when R.sup.1 is an unsubstituted furyl, or furyl mono- or polysubstituted with alkyl and R.sup.2 is hydrogen, then R.sup.3 is functional derivative of carboxy and, where applicable, pharmaceutically acceptable salts thereof are hyaluronidase inhibitors and useful as anti-allergic agent.