| abstract |
FIELD: chemical industry. SUBSTANCE: preparation of intermediate products for synthesis of peptides of asymmetrically intermediate diaminodicarboxylic acid derivatives of formula I: wherein A and B independently from each other are each radical-OR wherein R is mono or repeatedly halogenated linear, branched or cyclic C 1 -C 5 alkyl radical or radical -CH 2 -X wherein X represents phenyl, -OCH 3 , -CCl 3 , -CH 2 -Y wherein Y is halogen, p- tosyl optionally mono or repeatedly substituted by halogen, SiR 1 R 2 R 3 or alkoxy group, phenyl 2-piridyl or radical R 1 ,R 2 ,R 3 wherein residues independently from each other each is linear or branched C 1 -C 4 alkyl or phenyl; E and F each is residue of formula: wherein W is C-N benzyl residue; n is integer of 2 to 10, chiral centers in compound of formula I being determined by original compounds. Compound of formula I is prepared by mixed method of colber synthesis of electrodes made of platinum network at 18-25 C. EFFECT: wider range of products for preparing peptides. 5 cl, 14 ex |