摘要 |
An alkyl ether derivative represented by the following general formula [1] or its salt: wherein R<SUP>1 </SUP>and R<SUP>2 </SUP>represent each a substituent such as hydrogen, halogeno or alkyl; R<SUP>3 </SUP>represents 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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