申请人:Shionogi & Co., Ltd.
公开号:US04076702A1
公开(公告)日:1978-02-28
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 from C.sub.2 -C.sub.4 alkylene group, group R.sup.2 --N--R.sup.3 optionally represents phthalimido group, piperidino group, 4-hydroxy-4-(p-halogenophenyl)piperidino, morpholino, or piperazino group 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.
由以下公式表示的二肽衍生物: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羰基烷基、C.sub.3 -C.sub.10二烷基氨基烷基或环丙基甲基;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、C.sub.2 -C.sub.7羰基烷基、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、甘氨基或甘氨基-甘氨基;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可选择地组合形成C.sub.2 -C.sub.4烷基烷基,基R.sup.2--N--R.sup.3可选择地代表邻苯二甲酰基、哌啶基、4-羟基-4-(对卤代苯基)哌啶基、吗啉基或哌嗪基,该基被C.sub.1 -C.sub.6烷基或苯基取代;环A代表苯环或吡啶环,可选择地取代卤素;环B代表苯环或噻吩环,可选择地取代卤素、三氟甲基、甲磺基、硝基或C.sub.1 -C.sub.6烷基,以及它们的酸盐,用作抗焦虑药、镇静剂、抗惊厥药、催眠药、肌肉松弛剂或它们的合成中间体,制备而成。