申请人:Syntex (U.S.A.) Inc.
公开号:US04745116A1
公开(公告)日:1988-05-17
2-Oxy-4H-3,1-benzoxazin-4-ones, useful as serine protease inhibitors, represented by the formula: ##STR1## and the pharmaceutically acceptable acid addition salts thereof, wherein: a is an integer of 1 to 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 to 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 hydroxy, benzyloxy, 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 six carbon atoms, halo, --NO.sub.2, --N(R.sup.1).sub.2, --NR.sup.1 CO.sub.2 R.sup.2, --NR.sup.1 COR.sup.2, and --NR.sup.1 C(O)N(R.sup.1).sub.2, 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, or a pharmaceutically acceptable acid addition salt thereof.
2-氧基-4H-3,1-苯并噁嗪-4-酮是一种丝氨酸蛋白酶抑制剂,其化学式为:##STR1## 其中:a为1至4的整数;A为键或具有1至8个碳原子的烷基;R为氢、苯基、咪唑基或具有3至6个碳原子的环烷基,其中苯基、咪唑基或环烷基环上可选取1至3个取代基,所述取代基独立地选自于下列群组:具有1至4个碳原子的低烷基、具有1至4个碳原子的低烷氧基、--N(R.sup.1).sub.2、--NO.sub.2、卤素或具有1至4个碳原子的低烷基硫基,且每个R'独立地选自于下列群组:羟基、苄氧基、具有1至6个原子的低烷基、具有2至6个碳原子的低烯基、具有1至6个碳原子的低烷氧基、低烷基硫基或卤素-具有1至6个碳原子的低烷基、卤素、--NO.sub.2、--N(R.sup.1).sub.2、--NR.sup.1 CO.sub.2 R.sup.2、--NR.sup.1 COR.sup.2和--NR.sup.1 C(O)N(R.sup.1).sub.2,其中每个R.sup.1独立地为氢或具有1至4个碳原子的低烷基,或者共同形成一种哌啶或哌嗪环,所述环上的氮原子可选取具有1至4个碳原子的低烷基或--CH.sub.2 CH.sub.2 OH;每个R.sup.2独立地为具有1至4个碳原子的低烷基,如果R为氢,则A为烷基;或其药学上可接受的酸盐。