作者:C. Szántay、L. Szabó、G. Kalaus
DOI:10.1016/0040-4020(77)84062-3
日期:1977.1
Addition of α-acetoxy acrilic acid (-)-menthyl ester to enamine 1 produces about 40% asymmetric induction. The compound obtained, 9b, can be converted into (+)-vincamine with ease and in good yield. The catalytic effect of metal ions on the epimerisation of the vincamine-epivincamine system was investigated.
向烯胺1中添加α-乙酰氧基丙烯酸(-)-薄荷基酯产生约40%的不对称诱导。所获得的化合物9b可以轻松且高收率地转化为(+)-长春胺。研究了金属离子对长春胺-表芬卡明体系差向异构化的催化作用。