Synthesis of 2′,3′-Dideoxy-3′-fluorothymidine Using Individual Anomers of 1,5-Di-<i>O</i>-benzoyl-2,3-dideoxy-3-fluoro-D-<i>erythro</i>-pentofuranose as Glycosylating Agents
作者:Igor A. Mikhailopulo、Tamara I. Pricota、Nicolai E. Poopeiko、Tatjana V. Klenitskaya、Natalia B. Khripach
DOI:10.1055/s-1993-25925
日期:——
A convenient preparation of α- and β-anomers of 1,5-di-O-benzoyl-2, 3-dideoxy-3-fluoro-D-erythro-pentofuranose is described. Each anomer is studied as the glycosylating agent in the reaction with bis-trimethylsilylated thymine in the presence of trimethylsilyl triflate. Under optimum conditions, 2′,3′-dideoxy-3′-fluorothymidine (FLT) and its α-anomer are isolated in 64 and 25% yields, respectively.
描述了一种方便的制备1,5-二-O-苯甲酰基-2,3-去氧-3-氟-D-赤糖戊呋喃糖的α-和β-异构体的方法。每种异构体作为糖苷化试剂,与双三甲基硅基化胸腺嘧啶在三甲基硅基三氟甲磺酸的存在下进行反应。 在最佳条件下,2′,3′-去氧-3′-氟胸腺苷(FLT)及其α-异构体的产率分别为64%和25%。