Peptide bond formation by intermolecular aminolysis of d-glucopyranosyl esters of amino acids
作者:Štefica Horvat、Dina Keglević
DOI:10.1016/s0008-6215(00)81893-5
日期:1982.10
HO-protected and -unprotected d -glucopyranosyl esters of N -acylamino acids (Gly, Ala, Phe) with glycine and phenylalanine methyl esters in N , N -dimethylformamide at 38° and dichloromethane at 40°, respectively, led to rupture of the C-1 esterbond and formation of the corresponding N -acyldipeptide methyl ester. The relative reactivity of the C-1 esterbond toward aminolysis was greatly influenced by
The acetone-initiated photochemical alkylation of protected glycylglycine, glycylalanine, and glycyl-leucine dipeptide methyl esters with isobutene, but-1-ene, and toluene is described. The reactions lead to the preferential conversion of the glycine residue to leucine, norleucine, or phenylalanine, respectively, in yields of up to 60%. A free-radical chain mechanism is proposed for these reactions