Berkelic Acid: Straightforward Analogue Synthesis and Studies of Activity Against Selected Cancer Cell Lines
作者:Tamara Arto、Inés Sáenz de Santa-María、María-Dolores Chiara、Francisco J. Fañanás、Félix Rodríguez
DOI:10.1002/ejoc.201601194
日期:2016.12
(–)-Berkelic acid is an architecturally unique secondary metabolite isolated from an extremophilic Penicillium species. In this paper, we describe a very simple protocol to construct the central core of this natural product. Using this strategy, not only (–)-berkelic acid, but also a small library of analogues has been accessed. The key point of our protocol is a remarkable silver-catalysed cascade
Scalable Total Synthesis of (−)-Berkelic Acid by Using a Protecting-Group-Free Strategy
作者:Francisco J. Fañanás、Abraham Mendoza、Tamara Arto、Baris Temelli、Félix Rodríguez
DOI:10.1002/anie.201109076
日期:2012.5.14
polycyclic core of (−)‐berkelic acid (1) was constructed in just one step from very simple starting materials. The totalsynthesis of 1 involves a seven‐step linear sequence. Protection/deprotection steps were avoided and all but the last step were performed on a gram scale. This synthesis could solve the supply problem associated with the exhaustion of the natural source.
Concise total synthesis of (−)-berkelic acid <i>via</i> regioselective spiroacetal/pyran formation
作者:Shogo Hanada、Masahito Yoshida、Hideo Kigoshi
DOI:10.1039/d4cc00166d
日期:2024.3.19
We successfully developed (1) scalable synthesis of the triol segment and (2) regio- and stereoselective synthesis of the tetracyclic skeleton by tandem spiroacetal/pyran formation from a simpler alkyne precursor, resulting in the achievement of concise total synthesis of (−)-berkelic acid.