A versatile synthesis of tricyclic analogues of quinolone antibacterial agents: Use of a novel reformatsky reaction
作者:Joseph P Michael、Charles B de Koning、Trevor V Stanbury
DOI:10.1016/s0040-4039(97)82976-0
日期:1996.12
A simple synthesis of tricyclic analogues of the quinolone antibiotics bearing a diverse range of substituents on the aromatic ring is described. The key steps involve unprecedented Reformatsky reaction between diethyl bromomalonate and N-arylpyrrolidine-2-thiones 8, followed by cyclisation of the resulting enaminone intermediates 9 in polyphosphoric acid.
描述了在芳环上带有各种取代基的喹诺酮抗生素的三环类似物的简单合成。关键步骤涉及溴代丙二酸二乙酯与N-芳基吡咯烷-2-硫酮8之间前所未有的Reformatsky反应,然后将所得烯胺酮中间体9在多磷酸中环化。