An improved process for the preparation of 6-substituted-5-alkyl-2,4-quinazolinediamines, useful in the production of trimetrexate and similar antifolate agents, together with several novel intermediates are disclosed.
揭示了一种改进的工艺,用于制备6-取代-5-烷基-2,4-
喹唑啉二胺,可用于生产曲美曲塞和类似的抗叶酸类药物,同时还揭示了几种新的中间体。