(−)-Pseudodistomin E: First Asymmetric Synthesis and Absolute Configuration Assignment
作者:Stephen G. Davies、Ai M. Fletcher、Paul M. Roberts、James E. Thomson、David Zimmer
DOI:10.1021/acs.orglett.7b00434
日期:2017.4.7
(−)-Pseudodistomin E has been prepared for the first time, allowing its structure and absoluteconfiguration to be confirmed. The established conjugate addition of lithium (S)-N-allyl-N-(α-methyl-p-methoxybenzyl)amide to methyl (E,E)-hepta-2,5-dienoate generated the C(2)-stereocenter, and iodolactonisation of a derivative generated the remaining two stereogenic centers. Ensuing iodide displacement