An Inverse Electron-Demand Diels-Alder-Based Total Synthesis of Urolithin M7
作者:Graham Bodwell、Ian Pottie、Penchal Nandaluru
DOI:10.1055/s-0030-1261203
日期:2011.9
Urolithin M7 was synthesized from 2-hydroxy-4-methoxybenzaldehyde in 8 steps and 48% overall yield. The key step was an inverse electron demand Diels-Alder (IEDDA) reaction between diene 10 and the enamine (7) derived from dimethoxyacetaldehyde and pyrrolidine, which generated the 6H-dibenzo[b,d]pyran-6-one skeleton.