Enantioselective Total Synthesis of (−)-Curcuquinone via Regioselective Chromium-Mediated Benzannulation
作者:Ana Minatti、Karl Heinz Dötz
DOI:10.1021/jo0500939
日期:2005.4.1
A short and efficient, high-yielding enantioselective total synthesis of the marine natural product (−)-curcuquinone 1 is reported involving a regioselective [3 + 2 + 1]-benzannulation reaction as the key step. Additionally, this strategy allows the isolation of curcuhydroquinone monomethyl ether 9 as an intermediate of the benzannulation reaction and its subsequent further protection toward diversified
Formal syntheses of heliannuols A and D, allelochemicals from Helianthus Annus
作者:Kazi Tuhina、Dipal R. Bhowmik、Ramanathapuram V. Venkateswaran
DOI:10.1039/b200103a
日期:2002.3.7
A synthesis of heliannuol A 1 is described involving hydrogenolysis of the cyclopropane fused benzoxepane compound 23 to generate the benzoxocane ring system of 1 and a fragmentation of methyl ether 25 furnished 4-methoxycurcuphenol 29, an advanced intermediate to heliannuol D 4.
介绍了氦壬醇 A 1 的合成过程,包括环丙烷融合苯并氧杂环庚烷化合物 23 的氢解,生成 1 的苯并氧杂环庚烷环系统,甲基醚 25 断裂生成 4-甲氧基莪术酚 29,这是氦壬醇 D 4 的高级中间体。