Total Synthesis of (<i>S</i>)-(−)-(<i>E</i>)-15,16-Dihydrominquartynoic Acid: A Highly Potent Anticancer Agent
作者:Benjamin W. Gung、Godwin Kumi
DOI:10.1021/jo049920g
日期:2004.5.1
The conjugated entriyne natural product, (S)-(E)-15,16-dihydrominquartynoic acid (1), is synthesized in five linear steps and 30% overall yield from the known aldehyde 11. The key step is a one-pot in situ desilylation/Cadiot−Chodkiewicz coupling reaction affording the entriyne unit. The bromoalkyne 6 with an ω-carboxylic acid group was found to undergo a copper-catalyzed cross-coupling reaction producing