申请人:Syntex (U.S.A.) Inc.
公开号:US04665070A1
公开(公告)日:1987-05-12
2-Oxy-4H-3,1-benzoxazin-4-ones represented by the formula: ##STR1## and the pharmaceutically acceptable acid addition salts thereof, wherein: a is an integer of 0-4; A is a bond, or alkylene having one to eight carbon atoms; R is hydrogen, phenyl, imidazolyl or cycloalkyl having three to six carbon atoms, wherein the phenyl, imidazolyl or cycloalkyl ring is optionally substituted with 1-3 substituents independently selected from the group consisting of lower alkyl having one to four carbon atoms, lower alkoxy having one to four carbon atoms, --N(R.sup.1).sub.2, --NO.sub.2, halo or lower alkylthio having one to four carbon atoms, and, each R' is independently selected from the group consisting of lower alkyl having one to six atoms, lower alkenyl having two to six carbon atoms, lower alkoxy having one to six carbon atoms, lower alkylthio or halo-lower alkyl having one to four carbon atoms, halo, --NO.sub.2, --N(R.sup.1).sub.2, ##STR2## --NR.sup.1 COR.sup.2, and ##STR3## in which each R.sup.1 is independently hydrogen or lower alkyl having one to four carbon atoms, or together form a piperidine or a piperazine ring optionally substituted at the ring nitrogen by lower alkyl having one to four carbon atoms or --CH.sub.2 CH.sub.2 OH, each R.sup.2 is independently lower alkyl having one to four carbon atoms, A is an alkylene group if R is hydrogen, and the pharmaceutically acceptable acid addition salts thereof are useful as serine protease inhibitors in humans and animals.
2-Oxy-4H-3,1-苯并噁嗪-4-酮的化学式为:##STR1##及其药学上可接受的酸盐,其中:a为0-4的整数;A为键合或含有一至八个碳原子的烷基;R为氢、苯基、咪唑基或含有三至六个碳原子的环烷基,其中苯基、咪唑基或环烷基环可选择性地被1-3个取代基取代,所述取代基独立地选自由1至四个碳原子的低烷基、1至四个碳原子的低烷氧基、--N(R.sup.1).sub.2、--NO.sub.2、卤素或1至四个碳原子的低烷硫基,每个R'独立地选自由1至六个原子的低烷基、二至六个碳原子的低烯基、1至六个碳原子的低烷氧基、1至四个碳原子的低烷硫基或卤素-1至四个碳原子的低烷基、卤素、--NO.sub.2、--N(R.sup.1).sub.2、##STR2## --NR.sup.1 COR.sup.2和##STR3##其中每个R.sup.1独立地为氢或1至四个碳原子的低烷基,或者共同形成一个哌啶或哌嗪环,该环可选择性地在环氮原子上被1至四个碳原子的低烷基或--CH.sub.2 CH.sub.2 OH取代,每个R.sup.2独立地为1至四个碳原子的低烷基,如果R为氢,则A为烷基基团,其药学上可接受的酸盐在人类和动物中作为丝氨酸蛋白酶抑制剂具有用途。