Synthesis of (+)-Juruenolide C: Use of Sequential 5-<i>Exo</i>-<i>Digonal</i> Radical Cyclization, 1,5-Intramolecular Hydrogen Transfer, and 5-<i>Endo</i>-<i>Trigonal</i> Cyclization
作者:Derrick L. J. Clive、Elena-Simona Ardelean
DOI:10.1021/jo010206y
日期:2001.7.1
Ph3SnH, the latter underwent 5-exo-digonal radical cyclization, intramolecular hydrogen transfer, and 5-endo-trigonal cyclization, yielding 15. Conversion of the lactone into the lactol benzyl ether 17, carbon-silicon bond cleavage, and regeneration of the lactone carbonyl gave (+)-juruenolide C (1).
乙炔醇10依次转化为硅烷11和碳酸苯硒酯14。用Ph3SnH处理后,后者进行了5-外-对-自由基自由基环化,分子内氢转移和5-内-三角环化,得到15。内酯转化为内酯苄基醚17,碳-硅键断裂,内酯羰基再生,得到(+)-柔柔烯内酯C(1)。