Asymmetric Total Synthesis of Eburnamine and Eucophylline: A Biomimetic Attempt for the Total Synthesis of Leucophyllidine
作者:Ganesh Pandey、Akash Mishra、Jagadish Khamrai
DOI:10.1021/acs.orglett.7b01410
日期:2017.6.16
The first enantiospecific totalsynthesis of (+)-6 has been achieved employing a Friedländer quinoline synthesis as a key step. Asymmetric synthesis of the architecturally complex eburnamine 5 has also been accomplished utilizing an intramolecular acid-mediated cyclization of a carbinol amine lactone moiety. Highlights of the effective modular synthetic strategy include development of the common precursor
Enantioselective Total Synthesis of (+)‐Eucophylline
作者:Iman Traboulsi、Nitin S. Dange、Vincent Pirenne、Frédéric Robert、Yannick Landais
DOI:10.1002/chem.202200088
日期:2022.3.16
Two strategies based respectively on the free-radical carbo- and sulfonyl-cyanation of cyclopropenes and cyclobutenes were developed to achieve the totalenantioselectivesynthesis of (+)-eucophylline, a monoterpene alkaloid isolated from Leuconotis eugenifolius.