Riesco-Llach G, Planas M, Feliu L, Joule JA. 2(1
H)-Pyrazinones from acyclic building blocks: methods of synthesis and further derivatizations.
RSC Adv 2023;
13:1162-1184. [PMID:
36686909 PMCID:
PMC9811941 DOI:
10.1039/d2ra07227k]
[Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Accepted: 12/23/2022] [Indexed: 01/06/2023] Open
Abstract
Pyrazinones (2(1H)-pyrazinones) are found as components of a range of natural substances and are involved in the preparation of a great number of bioactive molecules. Synthesis of such compounds, and analogues, requires knowledge of the heterocyclic properties of pyrazinones and, in particular, methods for their ring construction. This review deals with the strategies that have been developed for the synthesis of pyrazinones from acyclic precursors, especially α-amino acid-derived units, from the first examples in 1905 up to the most recent in 2021.
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