申请人:The Upjohn Company
公开号:US04978753A1
公开(公告)日:1990-12-18
A 7-phenylpyrimido[1,2-a][1,4]benzodiazepin-3(5H)-ones of the formula II: ##STR1## wherein R.sub.o is selected from the group consisting of hydrogen, alkyl of 1 to 3 carbon atoms, inclusive, --COOR in which R is alkyl defined as above, ##STR2## in which n is a number of 1 to 4, R.sub.6 and R.sub.7 are hydrogen or alkyl defined as above or together ##STR3## is selected from the group consisting of pyrrolidino, piperidino, morpholino, and 4-methylpiperazino, and --CH.sub.2 OH; wherein R.sub.1 is selected from the group consisting of hydrogen, hydroxy, acetoxy, propionoxy, succinyloxy, and alkyl esters thereof; wherein R.sub.2, R.sub.3, R.sub.4, and R.sub.5 are selected from the group consisting of hydrogen, halogen, nitro, cyano, trifluoromethyl, lower-alkyl, -alkoxy, -alkylthio, -alkylsulfinyl, -alkylsulfonyl, -alkanoylamino and -dialkylamino, are synthesized by condensing a 2-amino-5-phenyl-3H-1,4-benzodiazepine of the formula I ##STR4## with a compound selected from the group consisting of acetylenic compounds of the formulae HC.tbd.C--COOR, ROOC.tbd.C--COOR in which R is alkyl defined above, inclusive, and ##STR5## in which R' is alkyl defined as above or ##STR6## defined as above, to give a compound of formula IIa ##STR7## wherein R.sub.2, R.sub.3, R.sub.4, and R.sub.5 is defined as above, and Ro' is selected from the group consisting of hydrogen, alkyl as defined above, --COOR as defined above, and ##STR8## as defined above. Compounds of formula II wherein R.sub.o is --CH.sub.2 OH are obtained by reducing a compound IIa wherein R.sub.o is --CH.sub.2 OH are obtained by reducing a compound IIa wherein R.sub.o ' is --COOR. The compounds of formula II and their pharmacologically acceptable acid addition salts and N-oxides are useful tranquilizers and sedatives for birds and mammals.
化合物II的结构式为:##STR1## 其中R.sub.o选自羟基,1到3个碳原子的烷基,--COOR,其中R为上述定义的烷基,##STR2## 其中n为1到4的数字,R.sub.6和R.sub.7为氢或上述定义的烷基,或一起##STR3## 选自吡咯烷基,哌啶基,吗啉基和4-甲基哌嗪基,和--CH.sub.2 OH;其中R.sub.1选自羟基,乙酰氧基,丙酰氧基,琥珀酰氧基和其烷基酯类;其中R.sub.2,R.sub.3,R.sub.4和R.sub.5选自氢,卤素,硝基,氰基,三氟甲基,低烷基,-烷氧基,-烷基硫基,-烷基亚磺酰基,-烷基磺酰基,-烷酰氨基和-二烷基氨基,通过将公式I的2-氨基-5-苯基-3H-1,4-苯二氮平与选自公式HC.tbd.C--COOR,ROOC.tbd.C--COOR的乙炔化合物以及##STR5## 其中R'为上述定义的烷基或##STR6## 定义如上的化合物缩合而成,得到公式IIa的化合物##STR7## 其中R.sub.2,R.sub.3,R.sub.4和R.sub.5如上所定义,Ro'选自氢,如上定义的烷基,--COOR,以及##STR8## 如上定义的化合物。其中R.sub.o为--CH.sub.2 OH的化合物是通过还原R.sub.o'为--COOR的化合物IIa得到的。化合物II及其药学上可接受的酸盐和N-氧化物是对鸟类和哺乳动物有用的镇静剂和镇痛剂。