作者:Yean-Jang Lee、Ling-Yi Yang、Chia-Fu Chang、Yu-Chao Huang、Chao-Chin Hu、Tsui-Hwa Tseng
DOI:10.1055/s-0028-1087998
日期:2009.4
The synthesis of kynapcin-24, which can be isolated from the Korean mushroom Polyozellus multiflex Murr, is achieved in 12% overall yield from commercially available 3,4-dihydroxybenzaldehyde by a route in which the longest linear sequence is only 14 steps. The key transformations in the synthesis are copper-mediated and palladium-catalyzed coupling reactions of the iodide 3-iodo-5,6-diisopropoxy-
可以从最长的线性序列只有14个步骤的途径从可商购的3,4-二羟基苯甲醛中以12%的总收率合成可以从韩国蘑菇Polyozellus multiflex Murr中分离出来的kynapcin-24 。合成过程中的关键转变是碘化物3-iodo-5,6-diisopropoxy-2-[[(tetrahydropyran-2-yloxy)methyl]苯并呋喃与铜的介导和钯催化的偶联反应,相应的锡烷5,6-二异丙氧基-2-[[(四氢吡喃-2-基氧基)甲基] -3-(三丁基锡烷基)苯并呋喃,和(羟基苯基)炔丙基醚的5-内挖-碘环化。 kynapcin-24-铜介导的-钯催化的-偶联-环化