Total Synthesis of the Macrocyclic <i>N</i>-Methyl Enamides Palmyrolide A and 2<i>S</i>-Sanctolide A
作者:Andrew D. Wadsworth、Daniel P. Furkert、Margaret A. Brimble
DOI:10.1021/jo502238r
日期:2014.11.21
details of the total syntheses of the initially reported and revised structures of the neuroprotective agent palmyrolide A are reported. The key macrocyclization step was achieved using a sequential ring-closingmetathesis/olefin isomerization reaction. Furthermore, the totalsynthesis of the related macrolide (2S)-sanctolide A is reported. The synthesis used key elements from the synthesis of palmyrolide
Total Synthesis of the Initially Reported and Revised Structures of the Neuroprotective Agent Palmyrolide A
作者:Andrew D. Wadsworth、Daniel P. Furkert、Jonathan Sperry、Margaret A. Brimble
DOI:10.1021/ol3025956
日期:2012.10.19
neuroprotective agent palmyrolide A are reported. The key macrocyclization step was achieved using a sequential ring closing metathesis/olefin isomerization reaction. The synthetic work described herein serves to confirm the recent structural revision of this unusual natural product.
The stereoselective total synthesis of palmyrolide A was accomplished through macrocyclization reaction involving trans enamide formation by coupling of vinyl iodide with secondary amide in an intramolecular fashion. The two coupling partners, vinyl iodide 4 and secondary amide 3 were synthesized from the same intermediate alcohol 5. Yamaguchi esterification and CBS-reduction are the other key steps
Modular Total Synthesis of (–)‐Palmyrolide A and (+)‐(
<scp>
5
<i>S</i>
</scp>
,
<scp>
7
<i>S</i>
</scp>
)‐Palmyrolide A via
<scp>Ring‐Closing</scp>
Metathesis and Alkene Isomerization†
作者:Yecai Lai、Wei‐Min Dai
DOI:10.1002/cjoc.202000458
日期:2021.1
has been established for total synthesis of the naturally occurring (–)‐palmyrolide A and (+)‐5,7‐epi‐palmyrolide A. By using the racemic tert‐butyl carbinol‐containing alkyl iodide, the two diastereoisomeric macrolides could be obtained from the same sequence of reactions, demonstrating the flexibility of the multimodule assembly strategy for diverted total synthesis.