Synthesis of the enantiomers of the dual function 2-nitroimidazole radiation sensitizer RB 6145
作者:Anthony D. Sercel、Vladimir G. Beylin、Mark E. Marlatt、Boguslawa Leja、H. D. Hollis Showalter、André Michel
DOI:10.1002/jhet.5570430625
日期:2006.11
described for the synthesis of racemic 2-nitroimidazole radiation sensitizer RB-6145 (2a) and each of its corresponding (R)- and (S)-enantiomers (2b and 2c, respectively). The synthesis of each enantiomer commences with the appropriate chiral epichlorohydrin and utilizes a novel application of 3-trimethylsilyl-2-oxazolidinone (3b) as a mild, safe surrogate for highly toxic aziridine. The synthesis of the (R)-enantiomer
描述了用于合成外消旋2-硝基咪唑辐射敏化剂RB-6145(2a)及其相应的(R)-和(S)-对映体(分别为2b和2c)的短而有效的途径。每个对映异构体的合成均始于适当的手性表氯醇,并利用3-三甲基甲硅烷基-2-恶唑烷酮(3b)的新颖应用作为温和,安全的高毒性氮丙啶的替代物。(R)-对映异构体(2b)的合成已成功扩大规模,可为早期临床前评估提供几千量的材料。