Enantiospecific Total Synthesis of (−)-Bakkenolide III and Formal Total Synthesis of (−)-Bakkenolides B, C, H, L, V, and X
作者:Chiao-Hua Jiang、Annyt Bhattacharyya、Chin-Kang Sha
DOI:10.1021/ol071124k
日期:2007.8.1
A concise enantiospecific synthesis of (-)-bakkenolide III was accomplished from (S)-(+)-carvone. The key step involved radical cyclization of an iodoketone intermediate which afforded the cis-hydrindanone skeleton. Further synthetic transformations generated bakkenolide III, which also constitutes the formal total synthesis of (-)-bakkenolides, B, C, H, L, V, and X.
从(S)-(+)-香芹酮中完成了(-)-bakkenolide III的简洁对映体特异性合成。关键步骤涉及碘酮中间体的自由基环化,该中间体提供了顺式氢化丹酮骨架。进一步的合成转化产生了bakkenolide III,其也构成了(-)-bakkenolides,B,C,H,L,V和X的正式全合成。