A Convenient and Efficient Synthesis of Dipeptidyl Benzoxaboroles and Their Peptidomimetics
摘要:
We have developed a convenient and efficient method for the synthesis of dipeptidyl benzoxaboroles and their peptidomimetics. The novel dipeptidyl benzoxaboroles were obtained by the protecting-group-free coupling of 6-amino-1,3-dihydro-2,1-benzoxaborol-1-ol with various N-(arylcarbonyl)phenylalanines. Bioisosteric replacement of the terminal amide moiety of dipeptidyl benzoxaboroles by 1,3,4-oxadiazoles or 4H-3,1-benzothiazin-4-one provided their peptidomimetics with good molecular diversity. These transformations were based on the pluripotency of methyl (S)-2-isothiocyanato-3-phenylpropanoate and were highlighted by mild reaction conditions, high atom efficiency, and good to excellent isolated yields. This method is a valuable addition to the development of novel drug-like boronic acid molecules.
We have developed a convenient and efficient method for the synthesis of dipeptidyl benzoxaboroles and their peptidomimetics. The novel dipeptidyl benzoxaboroles were obtained by the protecting-group-free coupling of 6-amino-1,3-dihydro-2,1-benzoxaborol-1-ol with various N-(arylcarbonyl)phenylalanines. Bioisosteric replacement of the terminal amide moiety of dipeptidyl benzoxaboroles by 1,3,4-oxadiazoles or 4H-3,1-benzothiazin-4-one provided their peptidomimetics with good molecular diversity. These transformations were based on the pluripotency of methyl (S)-2-isothiocyanato-3-phenylpropanoate and were highlighted by mild reaction conditions, high atom efficiency, and good to excellent isolated yields. This method is a valuable addition to the development of novel drug-like boronic acid molecules.