| abstract |
(57) [Summary] [Structure] The following general formula: (In the formula, R represents a C 2 to C 4 linear or branched alkyl group, and n represents an integer of 1, 3, 4, 6 or 7.) and a drug thereof. A physically acceptable salt. [Effect] These compounds have excellent antihistamine action and antiallergic action, and are useful as therapeutic agents for allergic diseases and bronchial asthma. |