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-Oxy-4H-3,1-苯并噁唑啉-4-酮,作为丝氨酸蛋白酶抑制剂有用,其化学式如下:a是1到4的整数;A是键,或者具有一到八个碳原子的烷基;R是氢,苯基,咪唑基或者具有三到六个碳原子的环烷基,其中苯基,咪唑基或者环烷基环上可选地取代有1到3个独立选择自下列群组的取代基:具有一到四个碳原子的低烷基,具有一到四个碳原子的低烷氧基,-N(R1)2,-NO2,卤素或者具有一到四个碳原子的低烷硫基,每个R'独立地选自下列群组:羟基,苄氧基,具有一到六个碳原子的低烷基,具有二到六个碳原子的低烯基,具有一到六个碳原子的低烷氧基,低烷硫基或者卤素-具有一到六个碳原子的低烷基,卤素,-NO2,-N(R1)2,-NR1CO2R2,-NR1COR2,和-NR1C(O)N(R1)2,其中每个R1独立地是氢或者具有一到四个碳原子的低烷基,或者一起形成一个哌啶或哌嗪环,环上可选地取代,环氮原子由具有一到四个碳原子的低烷基或-CH2CH2OH取代;每个R2独立地是具有一到四个碳原子的低烷基,如果R是氢,则A是一个烷基基团,或者其药用可接受的酸盐。