Yamanouchi Pharmaceutical Company Ltd.

Kazuo Imai

Takashi Fujikura

Kunihiro Niigata

Shinichi Hashimoto

Toichi Takenaka

Kazuo Honda

Phenethylamine derivatives shown by the general formula ##STR1## wherein Ro represents a lower alkyl group; R.sub.1 represents a lower alkyl group or a lower alkoxy group; R.sub.2 represents hydrogen atom or a hydroxyl group; R.sub.3 and R.sub.4 each represents hydrogen atom or a lower alkyl group; R.sub.5 represents hydrogen atom or a lower alkoxy group; X represents oxygen atom or a methylene group; m is an integer of 1-3; and n is an integer of 0-2 and the acid addition salts thereof. These compounds exhibit a strong .alpha.-adrenergic blocking action and are useful as an antihypertensive agent.

Phenethylamine derivatives

Phenethylamine derivatives shown by the general formula ##STR1## wherein Ro represents a lower alkyl group; R.sub.1 represents a lower alkyl group or a lower alkoxy group, R.sub.2 represents hydrogen atom or a hydroxyl group; R.sub.3 and R.sub.4 each represents hydrogen atom or a lower alkyl group; R.sub.5 represents hydrogen atom or a lower alkoxy group; X represents oxygen atom or a methylene group; m is an integer of 1-3; and n is an integer of 0-2 and the acid addition salts thereof. These compounds exhibit a strong .alpha.-adrenergic blocking action and are useful as an antihypertensive agent.

Phenethylamine derivative compositions and use

Novel sulfamoyl-substituted phenethylamine derivatives which exhibit .alpha.-adrenergic blocking action and are useful as an antihypertensive agent and an agent for the treatment of congestive heart failure.

Use of sulfamoyl-substituted phenethylamine derivatives in treatment of

Phenethylamine derivatives shown by the general formula ##STR1## wherein Ro represents a lower alkyl group; R.sub.1 represents a lower alkyl group or a lower alkoxy group; R.sub.2 represents hydrogen atom or a hydroxyl group; R.sub.3 and R.sub.4 each represents hydrogen atom or a lower alkyl group; R.sub.5 represents hydrogen atom or a lower alkoxy group; X represents oxygen atom or a methylene group; m is an integer of 1 -3; and n is an integer of 0-2 and the acid addition salts thereof. These compounds exhibit a strong .alpha.-adreneregic blocking action and are useful as an antihypertensive agent.

Process of producing phenethylamine derivatives

Sulfamoyl-substituted phenethylamine derivatives and process of

Sulfamoyl substituted phenethylamine derivatives and process of

Sulfamoyl-substituted phenethylamine derivatives

Novel phenylethanolamine derivatives represented by the formula ##STR1## wherein R represents a hydrogen atom, a halogen atom, a hydroxyl group, a lower alkyl group, a lower alkoxy group, a lower alkylthio group, an amino group, a lower acylamino group, a lower alkylsulfonyl group, or a lower alkylsulfonylamino group; R.sub.1, R.sub.2, R.sub.3 and R.sub.4, which may be the same or different, each represents hydrogen or a lower alkyl group; R.sub.5 represents an aryl group which may have a substituent, a benzodioxane ring group which may have a substituent, an aryloxy group which may have a substituent, or an arylthio group which may have a substituent; said R.sub.5 being, however, a benzodioxane ring group which may have a substituent, an aryloxy group which may have a substituent, or an arylthio group which may have a substituent when R is a hydroxyl group; and n represents 0 or an integer of 1-3 and the acid addition salts thereof. The compounds of this invention exhibit .alpha.- and .beta.-adrenergic blocking actions and are useful as antihypertensive agents.

Growing community of inventors

Saitama, Japan

Kazuo Imai