Toyama Chemical Co., Ltd.

Noboru Iwakami

Shigeki Marubuchi

Tomohiro Okuda

Akihito Saitoh

Tamotsu Takamatsu

Tatsuo Kimura

Satoshi Ono

Masaya Nakagawa

Sumie Yamaguchi

An alkyl ether represented by the general formula: or its salt. This compound has activity to protect neurons, activity to accelerate nerve regeneration and activity to accelerate neurite extension and hence is useful as a therapeutic agent for diseases in central and peripheral nerves.

Alkyl ether derivatives or salts thereof

An alkyl ether derivative represented by the general formula: wherein each of Rand Rrepresents one or more groups selected from a hydrogen atom, a halogen atom, an alkyl group, an aryl group, an aralkyl group, an alkoxy group, an aryloxy group, an alkylthio group, an arylthio group, an alkenyl group, an alkenyloxy group, an amino group, an alkylsulfonyl group, an arylsulfonyl group, a carbamoyl group, a heterocyclic group, a hydroxyl group, a carboxyl group, a nitro group, an oxo group and the like; Ris an alkylamino group, an amino group, a hydroxyl group or the like; the ring A is a 5-membered or 6-membered heteroaromatic ring or a benzene ring; each of m and n is an integer of 1 to 6; and p is an integer of 1 to 3, or its salt has activity to protect neurons, activity to accelerate nerve regeneration and activity to accelerate neurite extension and hence is useful as a therapeutic agent for diseases in central and peripheral nerves.

Disclosed is an agent comprising a benzothiophene alkyl ether derivative represented by the general formula below or a salt thereof:  wherein Rand Rindependently represent at least one group selected from a hydrogen atom, a halogen atom, an alkyl group, an aryl group, an aralkyl group, an alkoxy group, an aryloxy group, an alkylthio group, an arylthio group, an alkenyl group, an alkenyloxy group, an amino group, an alkylsulfonyl group, an arylsulfonyl group, a carbamoyl group, a heterocyclic group, an amino group, a hydroxyl group, a carboxyl group, a nitro group, an oxo group and the like; Rrepresents an alkylamino group which may be substituted or an amino or hydroxyl group which may be protected; and m and n independently represent an integer ranging from 1 to 6. The agent is useful as a neurogenesis inducer or a therapeutic agent for neuropathy.

Neurogenesis inducer or neuropathy therapeutic agent comprising alkyl ether derivative or salt thereof

An alkyl ether derivative represented by the following general formula [1] or its salt: wherein Rand Rrepresent each a substituent such as hydrogen, halogeno or alkyl; Rrepresents alkylamino, amino or hydroxyl; the ring A represents a 5- or 6-membered aromatic heterocycle or a benzene ring; m and n are each an integer of from 1 to 6; and p is an integer of from 1 to 3; shows an effect of protecting retinal nerve cells and, therefore, is useful as a preventive and/or a remedy for retinal nerve diseases such as glaucoma, diabetic retinopathy, retinal artery obstruction, retinal venous obstruction, macular degeneration and retinopathy of prematurity.

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Takaoka, Japan

Noboru Iwakami