申请人:Shionogi & Co., Ltd.
公开号:US04154727A1
公开(公告)日:1979-05-15
Dipeptide derivatives represented by the formula: ##STR1## wherein R represents hydrogen, C.sub.1 -C.sub.6 alkyl group, C.sub.2 -C.sub.7 alkenyl group, C.sub.2 -C.sub.7 cyanoalkyl group, C.sub.2 -C.sub.7 carbamoylalkyl group, C.sub.3 -C.sub.10 dialkylaminoalkyl group or cyclopropylmethyl group, R.sup.1 represents hydrogen, C.sub.1 -C.sub.6 alkyl group, C.sub.7 -C.sub.14 aralkyl group, C.sub.7 -C.sub.14 hydroxyaralkyl group, C.sub.6 -C.sub.12 aryl group, C.sub.2 -C.sub.7 carbamoylalkyl group, C.sub.2 -C.sub.7 carboxyalkyl group, C.sub.1 -C.sub.6 aminoalkyl group, C.sub.4 -C.sub.10 guanidylalkyl group, C.sub.1 -C.sub.6 mercaptoalkyl group, C.sub.2 -C.sub.7 alkylthioalkyl group, C.sub.9 -C.sub.15 indolylalkyl group or C.sub.4 -C.sub.9 imidazolylalkyl group, R.sup.2 represents hydrogen, C.sub.1 -C.sub.6 alkyl group, C.sub.7 -C.sub.14 aralkyl group, C.sub.6 -C.sub.12 aryl group, glycyl group or glycyl-glycyl group, R.sup.3 represents hydrogen, C.sub.1 -C.sub.6 alkyl group or amino-protecting group, R.sup.1 and R.sup.2 optionally combine to form C.sub.2 -C.sub. 4 alkylene group, group ##STR2## optionally represents phthalimido group, piperidino group, 4-hydroxy-4-(p-halogenophenyl)piperidino, morpholino, or piperazino group each substituted by C.sub.1 -C.sub.6 alkyl group or phenyl group, A ring represents benzene ring or pyridine ring optionally substituted by halogen and B ring represents benzene ring or thiophene ring optionally substituted by halogen, trifluoromethyl group, methylsulfonyl group, nitro group or C.sub.1 -C.sub.6 alkyl group and their acid addition salts, being useful as anxiolytics, sedatives, anticonvulsants, hypnotics, muscle relaxants, or their synthetic intermediates, are prepared.
公式表示的二肽衍生物:##STR1## 其中,R代表氢,C.sub.1-C.sub.6烷基,C.sub.2-C.sub.7烯基,C.sub.2-C.sub.7氰基烷基,C.sub.2-C.sub.7氨基甲酰烷基,C.sub.3-C.sub.10二烷基氨基烷基或环丙基甲基基团,R.sup.1代表氢,C.sub.1-C.sub.6烷基,C.sub.7-C.sub.14芳基烷基,C.sub.7-C.sub.14羟基芳基烷基,C.sub.6-C.sub.12芳基基团,C.sub.2-C.sub.7氨基甲酰烷基,C.sub.2-C.sub.7羧基烷基,C.sub.1-C.sub.6氨基烷基,C.sub.4-C.sub.10胍基烷基,C.sub.1-C.sub.6巯基烷基,C.sub.2-C.sub.7烷基硫基烷基,C.sub.9-C.sub.15吲哚基烷基或C.sub.4-C.sub.9咪唑基烷基,R.sup.2代表氢,C.sub.1-C.sub.6烷基,C.sub.7-C.sub.14芳基烷基,C.sub.6-C.sub.12芳基基团,甘氨酰基或甘氨酰基-甘氨酰基,R.sup.3代表氢,C.sub.1-C.sub.6烷基或氨基保护基,R.sup.1和R.sup.2可以选择结合形成C.sub.2-C.sub.4烷基烷基,基团##STR2## 可选地表示邻苯二甲酰亚胺基,哌啶基,4-羟基-4-(对卤代苯基)哌啶基,吗啉基或哌嗪基,每个基团都被C.sub.1-C.sub.6烷基或苯基取代,A环表示苯环或吡啶环,可选地被卤素取代,B环表示苯环或噻吩环,可选地被卤素,三氟甲基基团,甲磺酰基,硝基或C.sub.1-C.sub.6烷基取代,它们的酸盐加成物可用作抗焦虑药,镇静剂,抗癫痫药,催眠药,肌肉松弛剂或它们的合成中间体,制备方法如下。