Modular total syntheses of mycolactone A/B and its [2H]-isotopologue

2017 ◽  
Vol 15 (36) ◽  
pp. 7518-7522 ◽  
Author(s):  
Sarah Saint-Auret ◽  
Hajer Abdelkafi ◽  
Didier Le Nouen ◽  
Laure Guenin-Macé ◽  
Caroline Demangel ◽  
...  

A new synthetic blueprint of mycolactone A/B is reported, granting access to the natural product and its [2H]-isotopologue.

Molecules ◽  
2021 ◽  
Vol 26 (19) ◽  
pp. 5938
Author(s):  
Jaehoon Sim ◽  
Eunbin Jang ◽  
Hyun Jin Kim ◽  
Hongjun Jeon

Pladienolides, an emerging class of naturally occurring spliceosome modulators, exhibit interesting structural features, such as highly substituted 12-membered macrocycles and epoxide-containing diene side chains. The potential of pladienolides as anti-cancer agents is confirmed by H3B-8800, a synthetic analog of this natural product class, which is currently under Phase I clinical trials. Since its isolation in 2004 and the first total synthesis in 2007, a dozen total syntheses and synthetic approaches toward the pladienolide class have been reported to date. This review focuses on the eight completed total syntheses of naturally occurring pladienolides or their synthetic analogs, in addition to a synthetic approach to the main framework of the natural product.


2006 ◽  
Vol 45 (35) ◽  
pp. 5736-5739 ◽  
Author(s):  
René Peters ◽  
Daniel F. Fischer

2014 ◽  
Vol 31 (4) ◽  
pp. 533-549 ◽  
Author(s):  
Xu-Wen Li ◽  
Bastien Nay

Important biomimetic steps in natural product synthesis have been promoted by transition metals, as exemplified by this beautiful ruthenium-catalyzed rearrangement of an endoperoxide into elysiapyrone A. Such reactions are supposed to occur during the biosynthesis, yet under different catalysis conditions.


ChemInform ◽  
2003 ◽  
Vol 34 (35) ◽  
Author(s):  
Lars Ole Haustedt ◽  
Ingo V. Hartung ◽  
H. M. R. Hoffmann

2019 ◽  
Author(s):  
Cedric Hugelshofer ◽  
Vignesh Palani ◽  
Richmond Sarpong

The first total synthesis of the complex hexacylic Daphniphyllum alkaloid (–)-daphlongamine H in enantioenriched form has been accomplished. Key to the success of the strategy are a complexity-building Mannich reaction, efficient cyclizations, and a highly diastereoselective hydrogenation to assemble multigram quantities of the tricyclic core bearing four contiguous stereocenters. Following construction of the hydro-indene substructure by means of a Pauson–Khand reaction, endgame redox manipulations delivered the natural product. Importantly, the synthetic studies have also given access to (–)-isodaphlongamine H and led to a revision of the reported structure of deoxyisocalyciphylline B, which resulted in the proposal of a modified biosynthetic pathway to the calyciphylline B-type alkaloids.


2021 ◽  
Vol 16 (10) ◽  
pp. 1934578X2110498
Author(s):  
Hisahiro Hagiwara

Recent advances in the total syntheses of cyclic natural products and related compounds from 2005 to 2021, which employ domino Michael reactions as key steps, have been reviewed, focusing mainly on the domino Michael reactions catalyzed by organocatalysts.


Catalysts ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 1199
Author(s):  
Sijia Chen ◽  
Chongguo Jiang ◽  
Nan Zheng ◽  
Zhen Yang ◽  
Lili Shi

Metal-mediated cyclizations are important transformations in a natural product total synthesis. The Pauson-Khand reaction, particularly powerful for establishing cyclopentenone-containing structures, is distinguished as one of the most attractive annulation processes routinely employed in synthesis campaigns. This review covers Co, Rh, and Pd catalyzed Pauson-Khand reaction and summarizes its strategic applications in total syntheses of structurally complex natural products in the last five years. Additionally, the hetero-Pauson-Khand reaction in the synthesis of heterocycles will also be discussed. Focusing on the panorama of organic synthesis, this review highlights the strategically developed Pauson-Khand reaction in fulfilling total synthetic tasks and its synthetic attractiveness is aimed to be illustrated.


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