The present invention is directed to a process for the preparation of a compound of formula 1b
which compound is useful as a prodrug of HIV integrase inhibitors and therefore is useful in the inhibition of HIV replication, the prevention and/or treatment of infection by HIV, and in the treatment of AIDS and/or ARC. The process includes the steps of a) brominating a compound of formula P-7 to form a compound of formula P-8, b) treating a compound of formula P-8 with NaIO4 to form a compound of formula P-9, c) reacting a compound of formula P-9 with [(2R)-pyrrolidinylmethyl]amine of formula to form a compound of formula P-10, d) reacting a compound of formula P-10 with 2, 4-difluorobenzylamine to form a compound of formula P-11, e) treating a compound of P-11 with palladium on carbon and ammonium hydroxide to form a compound of formula 1a, and f) treating a compound of formula 1a with NaOH and ethanol to form a compound of formula 1b. The structures of the above mentioned compounds are disclosed in the specification.
                            本发明涉及一种制备式1b化合物的方法,该化合物可用作HIV整合酶
抑制剂的前药,因此在抑制HIV复制,预防和/或治疗HIV感染以及治疗AIDS和/或ARC方面具有用途。该方法包括以下步骤:a) 
溴化式P-7化合物以形成式P-8化合物,b) 用NaIO4处理式P-8化合物以形成式P-9化合物,c) 用公式[(2R)-
吡咯烷基]胺反应式P-9化合物以形成式P-10化合物,d) 用2,4-二
氟苯甲胺反应式P-10化合物以形成式P-11化合物,e) 用碳上
钯和
氨水处理式P-11化合物以形成式1a化合物,f) 用NaOH和
乙醇处理式1a化合物以形成式1b化合物。上述化合物的结构在说明书中披露。