Nsengiyumva O, Hamedzadeh S, McDaniel J, Macho J, Simpson G, Panda SS, Ha K, Lebedyeva I, Faidallah HM, Al-Mohammadi MM, Hall CD, Katritzky AR. A benzotriazole-mediated route to protected marine-derived hetero-2,5-diketopiperazines containing proline.
Org Biomol Chem 2015;
13:4399-403. [PMID:
25762208 DOI:
10.1039/c5ob00023h]
[Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A procedure for the cyclization of dipeptidoyl benzotriazolides containing proline derivatives promoted by triethylamine under MW activation is introduced. The reaction is general for a variety of dipeptidoyl benzotriazolides and represents a very practical and convenient method for the preparation of Pro- or Hyp-derived 2,5-diketopiperazines (2,5-DKPs) and bis-DKPs with a disulfide linker. This method can be used for the construction of 2,5-DKP compound libraries and for the synthesis of natural products with diketopiperazine cores.
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