Total Synthesis of (+)-Phomactin A Using a B-Alkyl Suzuki Macrocyclization
摘要:
A total synthesis of (+)-phomactin A is described using a B-alkyl Suzuki macrocyclization to incorporate the isolated trisubstituted olefin. This macrocyclization was accomplished with the sensitive hydrated furan ring in place. (R)-(+)-pulegone was used to establish the highly substituted cyclohexene core of the molecule.
Total Synthesis of (+)-Phomactin A Using a B-Alkyl Suzuki Macrocyclization
摘要:
A total synthesis of (+)-phomactin A is described using a B-alkyl Suzuki macrocyclization to incorporate the isolated trisubstituted olefin. This macrocyclization was accomplished with the sensitive hydrated furan ring in place. (R)-(+)-pulegone was used to establish the highly substituted cyclohexene core of the molecule.
作者:Rohini S. Ople、Kishor L. Handore、Nidhi S. Kamat、D. Srinivasa Reddy
DOI:10.1002/ejoc.201600538
日期:2016.8
stereoselective totalsynthesis of (–)-Nardoaristolone B, a nor-aristolane sesquiterpenoid natural product with an unusual 3/5/6 tricyclic ring system is described. The highlights of the present work includes use of (+)-(R)-Pulegone as a chiral-pool starting material, ring-closing metathesis, allylic oxidation and stereoselective cyclopropanation. In addition, a new analogue of Nardoaristolone B (minor product
描述了 (-)-Nardoaristolone B 的立体选择性全合成,它是一种具有不寻常的 3/5/6 三环系统的去甲马兜铃倍半萜类天然产物。目前工作的亮点包括使用 (+)-(R)-Pulegone 作为手性池起始材料、闭环复分解、烯丙基氧化和立体选择性环丙烷化。此外,Nardoaristolone B 的新类似物(来自最后一步的次要产物)以纯形式分离出来,并在单晶 X 射线分析的帮助下进行了充分表征。
Total Synthesis of (−)-Lamellodysidine A via an Intramolecular Diels–Alder Reaction
In this study, we achieved an eight-step enantioselective synthesis of (−)-lamellodysidine A, a structurally intriguing sesquiterpene natural product featuring a 5/5/6/6-fused tetracyclic skeleton that was obtained from the marine sponge Lamellodysidea herbacea. The key to the synthesis is a cascade reaction that includes an intramolecular Diels–Alder reaction. In addition, single-crystal X-ray crystallographic
在这项研究中,我们实现了 (-)-lamelodysidine A 的八步对映选择性合成,这是一种结构有趣的倍半萜天然产物,具有 5/5/6/6 稠合的四环骨架,从海海绵Lameldodysidea herbacea中获得。合成的关键是包括分子内 Diels-Alder 反应的级联反应。此外,合成的 (-)-lamellodysidine A 的单晶 X 射线晶体学分析清楚地证实了所提出的立体化学和绝对构型。
Total Synthesis of (+)-Phomactin A Using a <i>B</i>-Alkyl Suzuki Macrocyclization
作者:Peter J. Mohr、Randall L. Halcomb
DOI:10.1021/ja0296531
日期:2003.2.19
A total synthesis of (+)-phomactin A is described using a B-alkyl Suzuki macrocyclization to incorporate the isolated trisubstituted olefin. This macrocyclization was accomplished with the sensitive hydrated furan ring in place. (R)-(+)-pulegone was used to establish the highly substituted cyclohexene core of the molecule.