Literature DB >> 15281821

Total synthesis of formamicin.

Timothy B Durham1, Nicolas Blanchard, Brad M Savall, Noel A Powell, William R Roush.   

Abstract

The enantioselective total synthesis of the cytotoxic plecomacrolide natural product formamicin (1) is described. Key aspects of this synthesis include the efficient transacetalation reactions of MOM ethers 28 and 38 to form the seven-membered formyl acetals 29 and 39, a late-stage Suzuki cross-coupling reaction of the highly functionalized vinyl boronic acid 6 and vinyl iodide 7, a highly beta-selective glycosidation reaction of beta-hydroxy ketone 4 with 2,6-dideoxy-2-iodoglucopyranosyl fluoride 3, and the global desilylation of penultimate intermediate 77 mediated by in situ generated Et(3)N.2HF.

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Year:  2004        PMID: 15281821     DOI: 10.1021/ja048493l

Source DB:  PubMed          Journal:  J Am Chem Soc        ISSN: 0002-7863            Impact factor:   15.419


  4 in total

1.  Aqueous Glycosylation of Unprotected Sucrose Employing Glycosyl Fluorides in the Presence of Calcium Ion and Trimethylamine.

Authors:  Guillaume Pelletier; Aaron Zwicker; C Liana Allen; Alanna Schepartz; Scott J Miller
Journal:  J Am Chem Soc       Date:  2016-03-01       Impact factor: 15.419

2.  Halogen Atom Participation in Guiding the Stereochemical Outcomes of Acetal Substitution Reactions.

Authors:  Krystyna M Demkiw; Wouter A Remmerswaal; Thomas Hansen; Gijsbert A van der Marel; Jeroen D C Codée; K A Woerpel
Journal:  Angew Chem Int Ed Engl       Date:  2022-09-16       Impact factor: 16.823

3.  Total synthesis of periploside A, a unique pregnane hexasaccharide with potent immunosuppressive effects.

Authors:  Xiaheng Zhang; Yu Zhou; Jianping Zuo; Biao Yu
Journal:  Nat Commun       Date:  2015-01-20       Impact factor: 14.919

4.  Scope and Limitations of 3-Iodo-Kdo Fluoride-Based Glycosylation Chemistry using N-Acetyl Glucosamine Acceptors.

Authors:  Barbara Pokorny; Paul Kosma
Journal:  ChemistryOpen       Date:  2015-07-29       Impact factor: 2.911

  4 in total

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