Synthesis Of Peptide Mimetics Research Articles

Viral proteases: important targets of peptidemimetic compounds.

Proteases catalyze the hydrolysis of peptide bonds of proteins and peptides to produce smaller peptides and free amino acids. These enzymes are involved in physiologic processes such as blood coagulation and cellular death, and are related to life cycle of several viruses, such as hepatitis C, dengue, and AIDS. These features make most of proteases very important therapeutic targets for new pharmaceutical compounds. The development of peptidemimetics with improved pharmacokinetic properties is driving extensive research in the field of viral protease inhibitors. The present paper aims to highlight the design and synthesis of peptidemimetics that are able to inhibit viral proteases related to hepatitis C, dengue, and AIDS.

Synthesis of new Cα-tetrasubstituted α-amino acids

Cα-Tetrasubstituted α-amino acids are important building blocks for the synthesis of peptidemimetics with stabilized secondary structure, because of their ability to rigidify the peptide backbone. Recently our group reported a new class of cyclic Cα-tetrasubstituted tetrahydrofuran α-amino acids prepared from methionine and aromatic aldehydes. We now report the extension of this methodology to aliphatic aldehydes. Although such aldehydes are prone to give aldol products under the reaction conditions used, we were able to obtain the target cyclic amino acids in low to moderate yields and in some cases with good diastereoselectivity.

ChemInform Abstract: An Efficient Synthesis and Acylation of α‐Amino β‐Keto Esters: Versatile Intermediates in the Synthesis of Peptide Mimetics.

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An efficient synthesis and acylation of α-amino-β-keto-esters: Versatile intermediates in the synthesis of peptide mimetics.

A flexible and high yield synthesis of α-amino-β-keto esters has been developed via acylation of the ketimine derivatives of α-amino esters. These α-amino-β-keto-esters were acylated with chiral amino acid derivatives in 36–95% yields.