今 利真

A carboxylic acid‐catalysed transamidation of Boc‐protected diketopiperazines (Boc‐DKPs) was developed in this study, which allowed access to various tripeptides featuring a D‐proline residue in good‐to‐high yields within 30 min. Subsequent coupling reactions between the Boc‐DKPs and di‐, tri‐, and tetrapeptide esters were successfully performed, furnishing the corresponding tetra‐, penta‐, and hexapeptides.

Given the industrial importance of (meth)acrylate esters, various groups have devoted considerable effort to investigating their chemoselective transesterification. In 2021, we developed magnesium(II) and sodium(I) complexes derived from 2,6-di-tert-butyl-p-cresol (BHT-H)...

An organocatalyzed asymmetric aldol reaction of α-keto amides was developed. An N-terminal 4- trans -siloxyproline-based tripeptide with an l - tert -leucine unit adjacent to the 4- trans -siloxyproline residue was used to catalyze the reaction between various α-keto amides and acetone, to produce the corresponding aldol adducts with up to 99% yield and 91% ee.