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Studies towards the total synthesis of Herbimycin A

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posted on 2023-06-08, 14:51 authored by Guillaume Marcel Olivier Favier
Herbimycin A (1) belongs to the ansamycin family and is a 19-membered lactam with seven stereogenic centres, making it a synthetic challenge, which was first isolated in 1979 by Omura et al. Herbimycin A (1) exhibits a broad spectrum of biological activities: herbicidal, inhibitor of angiogenesis and of the maturation of growth factor receptor tyrosine kinases. Figure 1 - Herbimycin A (for figure see pdf) Since its discovery, only three total syntheses of Herbimycin A (1) have been described in the literature, along with the syntheses of advanced fragments. This thesis describes a new route to Herbimycin A (1), using a wide range of chemical reactions than those used in the previous routes from the literature. The main idea is to split Herbimycin A (1) into an aromatic fragment and an aliphatic fragment as shown below in Scheme 1. Scheme 1 - Retrosynthesis highlighting both aromatic and aliphatic fragments (for figure see pdf) The synthesis of aliphatic fragment (4) follows up the work of Ansell and Pietsch, past members of the Parsons group. Interesting results could be obtained and a wide range of Organic Chemistry reactions could be investigated.

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  • Published version

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176.0

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  • Chemistry Theses

Qualification level

  • doctoral

Qualification name

  • phd

Language

  • eng

Institution

University of Sussex

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Legacy Posted Date

2013-05-03

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