A Five-Step Synthesis of (<i>S</i>)-Macrostomine from (<i>S</i>)-Nicotine
作者:Monica F. Enamorado、Pauline W. Ondachi、Daniel L. Comins
DOI:10.1021/ol101887b
日期:2010.10.15
A concise synthesis of (S)-macrostomine has been accomplished in five steps from natural nicotine in 19% overall yield via a pyridine Die Is Alder cycloaddition reaction as the key step. A Kumada cross-coupling reaction on a 1-chloroisoquinoline intermediate provided the natural product
Six-Step Synthesis of (<i>S</i>)-Brevicolline from (<i>S</i>)-Nicotine
作者:Florence F. Wagner、Daniel L. Comins
DOI:10.1021/ol061334h
日期:2006.8.1
A six-step synthesis of (S)-brevicolline from (S)-nicotine is reported. Regioselective trisubstitution of the pyridine ring of nicotine, followed by successive Suzuki cross-coupling and Buchwald amination reactions, afforded the enantiopure beta-carboline alkaloid, brevicolline.