Daiichi Seiyaku Co., Ltd.

Daiichi Pharmaceutical Co., Ltd.

Santen Pharmaceutical Co., Ltd.

Shinichiro Ashida

Kyoko Sakuma

Fumiyoshi Ishikawa

Takao Sato

Yasufumi Shirasaki

Kiyoshi Irie

Hidemi Masumura

Satoshi Kunitada

Nootropic agent

A preventing and treating agent for peripheral circulatory disturbances containing a compound represented by formula (I): ##STR1## wherein R represents an imidazolyl group, a thiazolyl group, or a pyridyl group; n represents 1 or 2; and m represents an integer of from 1 to 4, or a salt thereof as an active ingredient.

Treating agent for peripheral circulatory disturbances

An antidiabetic agent is disclosed, which comprises a compound represented by formula (I): ##STR1## wherein R represents an imidazolyl group, a thiazolyl group or a pyridyl group; n represents 1 or 2; and m represents an integer of from 1 to 4, or a pharmaceutically acceptable salt thereof as an active ingredient.

The compound, 6-(1-imidazolyl

A preventing and treating agent for heart failure is disclosed, which comprises a compound represented by formula (I): ##STR1## wherein R represents an imidazolyl group, a thiazolyl group or a pyridyl group; n represents 1 or 2; and m represents an integer of from 1 to 4, or a pharmaceutically acceptable salt thereof as an active ingredient.

Treating agent for heart failure

A method for treating and preventing retinopathy which comprises administering a therapeutically effective amount of 2-(2-phenyl-2-(2-pyridyl))ethyl-2-imidazoline or a pharmaceutically acceptable salt thereof to a patient having retinopathy is disclosed.

Method for treating retinopathy

7-Piperidino-1,2,3,5-tetrahydroimidazo[2,1-b]-quinazolin-2-one having platelet aggregation inhibitory activity is disclosed. The compound has high water-solubility and reduced influences on the circulatory system.

7-piperidino-1,2,3,5-tetrahydroimidazo[2,1-b]-quinazolin-2-one having

A 1,2,3,5-tetrahydroimidazothienopyrimidin-2-one represented by the formula: ##STR1## wherein one of Z.sub.1, Z.sub.2 and Z.sub.3 is a sulfur atom and the remaining two of Z.sub.1, Z.sub.2 and Z.sub.3 represent CH, R.sub.1 and R.sub.2 each represents a hydrogen atom, an alkyl group having 1 to 5 carbon atoms, a phenyl group, a chlorine atom or, when taken together R.sub.1 and R.sub.2 represent an alkylene chain of 3 to 5 carbon atoms, and R.sub.3 represents a hydrogen atom or an alkyl group having 1 to 5 carbon atoms, and a pharmaceutically acceptable acid addition salt thereof, which exhibit an excellent blood platelet anti-aggregatory activity and are useful as anti-thrombotic agents.

Growing community of inventors

Tokyo, Japan

Shinichiro Ashida