2-Phenylpurinone derivatives, processes for their preparation, and their use as well as intermediates

摘要: Compounds of the formula (1) : and pharmaceutically acceptable salts thereof are described, wherein R¹ is C 1-6 alkyl or 2-6 alkenyl, R² hydrogen hydroxy. These compounds have vasodilator, bronchodilator anti-allergic properties. Pharmaceutical compositions described as methods use. Processes for preparation described.