A novel xanthine compound having bronchodilating and brain function improving activity represented by the following formula (I) and (II):
wherein R¹ represents a hydrogen atom, 4-methoxybenzyl group, a straight- or branched-chain alkyl group having 1 to 6 carbon atoms, or a cycloalkyl group having 3 to 6 carbon atoms; R² represents a hydrogen atom, a straight- or branched-chain alkyl group having 1 to 6 carbon atoms, or a cycloalkyl group having 3 to 6 carbon atoms; n represents an integer of from 1 to 4; and A represents -COCH₃ or - C(OR³)(OR⁴)CH₃ in which R³ and R⁴ independently represents an alkyl group having 1 to 3 carbon atoms or R³ together with R⁴ represents a polymethylene group having 2 to 4 carbon atoms is disclosed. Also disclosed are a pharmacologically acceptable salt of the same, method for preparing the same, and a pharmaceutical composition for the treatment of respiratory tract disease or brain disfunction comprising the effective amount of same.
一种具有支气管扩张和改善脑功能活性的新型
黄嘌呤化合物,由下式(I)和(II)表示:
其中 R¹ 代表氢原子、4-甲氧基苄基、具有 1 至 6 个碳原子的直链或支链烷基或具有 3 至 6 个碳原子的环烷基;R² 代表氢原子、具有 1 至 6 个碳原子的直链或支链烷基或具有 3 至 6 个碳原子的环烷基;n代表1至4的整数;以及A代表-COCH₃或-C(OR³)(OR⁴)CH₃,其中R³和R⁴分别代表具有1至3个碳原子的烷基或R³与R⁴一起代表具有2至4个碳原子的聚亚甲基。还公开了一种药理学上可接受的盐,制备方法,以及一种治疗呼吸道疾病或脑功能障碍的药物组合物,其中包含有效量的上述盐。