申请人:PCR, Inc.
公开号:US04029661A1
公开(公告)日:1977-06-14
Direct fluorination of uracil, cytosine and their derivatives, in the presence of a non-aqueous solvent, by fluorine gas to produce 5-fluorouracil, 5-fluorocytosine, 5-fluorouracil derivatives and 5-fluorocytosine derivatives is disclosed. The non-aqueous solvent is an acid or alcohol, which can be partly or fully fluorinated or chlorinated, of up to 8 carbon atoms, such as trifluoroacetic acid. Novel compounds produced by the reaction, such as 5,5-difluoro-5,6-dihydro-6-(2,2,2-trifluoroethoxy) uracil are also disclosed. The derivatives and 5-fluorocytosine are useful as germicidal and antineoplastic agents while 5-fluorouracil itself is a known cancer chemotherapy agent.
本发明揭示了在非水溶剂存在下,使用氟气直接氟化尿嘧啶、胞嘧啶及其衍生物,以产生5-氟尿嘧啶、5-氟胞嘧啶、5-氟尿嘧啶衍生物和5-氟胞嘧啶衍生物。非水溶剂是一种酸或醇,可部分或完全氟化或氯化,碳原子数不超过8个,例如三氟乙酸。该反应产生的新化合物,例如5,5-二氟-5,6-二氢-6-(2,2,2-三氟乙氧基)尿嘧啶也被揭示。这些衍生物和5-氟胞嘧啶可用作杀菌和抗肿瘤剂,而5-氟尿嘧啶本身是已知的癌症化疗药物。