(R)-2,2'-dihydroxy-1,1'-binaphthyl; tetra-n-butylphosphonium hydroxide; tri-i-propoxy lanthanium in tetrahydrofuran T=20°C; 0.5 h;

oligo-leucine with L- and D-Leu residues (7D/13L) 1.5 h; asymmetric epoxidation; influence of chiral control by the length of the chain, the stereochemistry of the amino acid residues, nature of the terminal amino group in biphasic or triphasic conditions; Product distribution;