Pyrrolidine N-alkylphosphonates and related nucleotide analogues: synthesis and stereochemistry
作者:Dominik Rejman、Radek Pohl、Petr Kočalka、Milena Masojídková、Ivan Rosenberg
DOI:10.1016/j.tet.2009.02.071
日期:2009.5
4-dihydroxypyrrolidine derivatives were synthesized and exploited as synthons for the preparation of hydroxypyrrolidine nucleoside phosphonic acids, the 3′-deoxynucleoside 5′-phosphate analogues. Simultaneously, an alternative route, the N-phosphoalkylation of the preformed pyrrolidine nucleosides employing Mannich- and Michael-type reactions, was investigated to obtain desired nucleotide analogues. In contrast to
合成了N-膦酰基烷基-反式-3,4-二羟基吡咯烷衍生物,并将其用作合成子来制备羟基吡咯烷核苷膦酸,即3'-脱氧核苷5'-磷酸类似物。同时,研究了另一种途径,即利用曼尼希和迈克尔型反应对预先形成的吡咯烷核苷进行N-磷酸烷基化,以获得所需的核苷酸类似物。与后一种方法相反,前一种方法很可能由于亲核置换过程中存在两个可能的S N 2过渡态而形成了两个非对映异构体。通过NMR光谱研究了所制备的核苷酸类似物的立体化学。