study, the first totalsynthesis of the reported structure of karnatakafuran B was accomplished through an 11-step reaction sequence using an allene-mediated electrocyclization of a 6π electron system involving a benzofuran [b]-bond for the construction of a highly substituted dibenzofuran ring. The spectral data of the synthesized compound was not identical to that of the natural karnatakafuran B
在这项研究中,报告的卡纳塔卡呋喃 B 结构的首次全合成是通过 11 步反应序列完成的,使用丙二烯介导的 6π 电子系统电环化,涉及苯并呋喃 [ b ] - 键,用于构建高度取代的二苯并呋喃环。合成化合物的光谱数据与天然 karnatakafuran B 的光谱数据不同。