This disclosure describes a novel process for the preparation of 1-(lower alkyl)substituted derivatives of 6-n-propyl-8-alkylimidazo[1,5-d]-as-triazin-4(3H)-ones which are useful as anti-asthmatic agents.
本公开说明了一种制备1-(低烷基)取代的6-丙基-8-烷基
咪唑并[1,5-d]-三嗪-4(3H)-酮衍
生物的新工艺,这些衍
生物可用作抗哮喘药物。