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Solid-Phase Synthesis of Hybrid 2,5-Diketopiperazines Using Acylhydrazide, Carbazate, Semicarbazide, Amino Acid, and Primary Amine Submonomers
Rahim A., Sahariah B., Baruah K., Deka J.K.R., Sarma B.K.
Published in American Chemical Society
PMID: 32000488
Volume: 85
Issue: 5
Pages: 2927 - 2937
We report the solid-phase synthesis of N,N′-di(acylamino)-2,5-diketopiperazine, an acylhydrazide-based conformationally rigid 2,5-DKP scaffold having exocyclic N-N bonds. We also show that different combinations of acylhydrazides, carbazates, semicarbazides, amino acids, and primary amines can be used to synthesize a highly diverse collection of hybrid DKP molecules via the solid-phase submonomer synthesis route. Finally, we show incorporation of a methyl substituent in one of the carbon atoms of the DKP ring to generate chiral daa- and hybrid-DKPs without compromising the synthetic efficiency. Copyright © 2020 American Chemical Society.
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Published in American Chemical Society
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