Concise and Convergent Enantioselective Total Syntheses of (+)- and (−)-Fumimycin
作者:Michele Retini、Silvia Bartolucci、Francesca Bartoccini、Michele Mari、Giovanni Piersanti
DOI:10.1021/acs.joc.9b02020
日期:2019.9.20
The concise and convergent total syntheses of (+)- and (−)-Fumimycin have been achieved by taking advantage of strategies for the asymmetric aza-Friedel–Crafts reaction of a highly substituted hydroquinone and N-fumaryl ketimine generated from the corresponding dehydroalanine. The enantiomerically pure natural product and its enantiomer were prepared in seven steps and 22% overall yield by employing
通过利用高取代氢醌和相应脱氢丙氨酸生成的N-富芳基酮亚胺的不对称aza-Friedel-Crafts反应策略,可以实现(+)-和(-)-富霉素的简洁且收敛的总合成。对映体纯天然产物及其对映体通过使用BINOL衍生的手性磷酸(CPA)催化剂的两种对映体,以七个步骤和22%的总收率制备。