Synthesis of chiral 2-(2′-pyrrolidinyl)pyridines from (S)- and (R)-proline: potential ligands of the neuronal nicotinic acetylcholine receptors
作者:Daqing Che、Johanna Siegl、Gunther Seitz
DOI:10.1016/s0957-4166(99)00028-2
日期:1999.2
A new strategy for a straightforward synthesis of novel optically active nicotine analogues starting from (S)- and (R)-proline is reported utilizing as the key steps the inverse electron demand Diels–Alder reaction of, hitherto unknown, chiral 5-(2′-pyrrolidinyl)-1,2,4-triazines (S)- and (R)-16. These serve as appropriate precursors for the preparation of different, highly enantiomerically enriched
据报道,从(S)-和(R)-脯氨酸开始的新型光学活性尼古丁类似物的直接合成的新策略是利用迄今未知的手性5-(2)的逆电子需求的Diels-Alder反应作为关键步骤进行合成的。 '-吡咯烷基)-1,2,4-三嗪(S)-和(R)-16。这些用作制备不同的,高度对映体富集的2-(2'-吡咯烷基)吡啶,天然(-)-去甲烟碱和(-)-烟碱的修饰以及神经元烟碱型乙酰胆碱受体的潜在配体的合适前体。多步合成在温和的条件下进行,具有良好的总收率和原始立体异构中心的立体化学完整性。