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results indicate that the growth of Escovopsis is stimulated in the presence of both non-volatile and volatile compounds from fungal cultivars. We also identified three isomeric diketopiperazines molecules ...
prerequisite to diketopiperazine b2 ion formation. Despite this lack of catalyzation, trans-cis isomerization is predicted to be facile. Concomitantly, the subsequent amide bond cleavage reaction is rate ...
into unsaturated tertiary polyamide with molar mass of ...
Spectrom. 2015, 377, 179). The diketopiperazine b2 + ion is thermodynamically more stable than the oxazolone but normally requires a trans/cis peptide bond isomerization in the dissociating peptide. Martens ...
studies. results are discussed in light of density functional theory Keywords: methanoproline · diketopiperazine · amide isomerization · natural bond orbital 20 1. Introduction 22 Proline occupies a special ...
, 2016 (L-Ser-L-Ser) and (L-Phe-L-Ser) diketopiperazines (DKP’s). The reaction between DABCO Received in revised form and EE-di-tosylate (L-Ser-L-Ser) DKP (2), results in the isomerization of the serine di ...
Under different concentrations of the base potassium deuteroxide KOD, the progress of reactions, such as enolization, D‐substitution, isomerization , and conformational changes of diketopiperazine ...
Simple monocyclic diketopiperazine (DKP)‐derived alkoxyamines exhibit unprecedented activation of a remote C−O bond for homolysis by amide distortion. The combination of strain‐release‐driven amide ...
of the cis and trans isomerization of the side chains in cyclic dipeptides has been examined by Eguchi and Kakuta.â Calculations, empirical and semiempirical, have also been performed on cyclic dipeptides.2 ...
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