A modular approach to prepare enantioenriched cyclobutanes: synthesis of (+)-rumphellaone A
作者:Jordan C. Beck、Caitlin R. Lacker、Lauren M. Chapman、Sarah E. Reisman
DOI:10.1039/c8sc05444d
日期:——
A modular synthesis of enantioenriched polyfunctionalized cyclobutanes was developed that features an 8-aminoquinolinamide directed C–H arylation reaction. The C–H arylation products were derivatized through subsequent decarboxylative coupling processes. This synthetic strategy enabled a 9-step enantioselective total synthesis of the antiproliferative meroterpenoid (+)-rumphellaone A.
开发了一种对映体富集的多官能化环丁烷的模块化合成方法,其特点是 8-氨基喹啉酰胺引导的 C-H 芳基化反应。C-H芳基化产物通过随后的脱羧偶联过程衍生化。该合成策略实现了抗增殖类裂萜 (+)-rumphellaone A 的 9 步对映选择性全合成。
Synthesis of rumphellaone A via epoxy nitrile cyclization
作者:Takafumi Hirokawa、Shigefumi Kuwahara
DOI:10.1016/j.tet.2012.04.035
日期:2012.6
The first enantioselective total synthesis of rumphellaone A, a cytotoxic 4,5-seco-caryophyllane isolated from the gorgonian coral Rumphella antipathies, has been achieved from a known olefinic alcohol by a 16-step sequence involving Stork's epoxy nitrile cyclization as the key step to concomitantly install a cyclobutane ring and three contiguous stereogenic centers contained in the molecule.
Exploring the Chemical Space Accessed by Chiral Pool Terpenes. The (−)-Caryophyllene Oxide Paradigm
作者:Theodora Athanasiadou、Georgia G. Bagkavou、Polymnia Karagianni、Christos I. Stathakis
DOI:10.1021/acs.orglett.4c00132
日期:2024.4.19
Terpenes represent a flourishing source of structural motifs that can be converted into several more complex architectures. Realization of such transformations in a concise and efficient manner adds great value to the starting material. Herein, we study the case of (−)-caryophylleneoxide and convert it into natural sesquiterpenoids (rumphellolide K, rumphellaone A, and antipacid A), thus expanding
萜烯代表了结构图案的丰富来源,可以转化为几种更复杂的结构。以简洁有效的方式实现这种转变为起始材料增加了巨大的价值。在此,我们研究了(−)-石竹烯氧化物的情况,并将其转化为天然倍半萜类化合物(rumphellolide K、rumphellaone A 和 antipacid A),从而扩大了其特权结构所访问的化学空间。我们的半合成很短,并且依赖于试剂决定的立体选择性和化学选择性。