75244-02-9

Upstream product

• 33477-30-4 4-nitrobenzyl ester of N-t-butyloxycarbonyl-L-phenylalanyl-L-leucine 
• 13734-34-4 N-tert-butoxycarbonyl-L-phenylalanine 
• 81638-94-0 O-(t-butyloxycarbonyl-L-phenylalanyl)-2-pyridylmethylketoxime 
• 75243-95-7 3-O--hydroxy-2-phenylindenone 

Downstream Products

• 75244-06-3 4-nitrobenzyl ester of N-t-butyloxycarbonylglycylglycyl-L-phenylalanyl-L-leucine 
• 58822-25-6 Leu-enkephalin 
• 81649-51-6 hydrochloride of 4-nitrobenzyl ester of glycyl-glycyl-L-phenylalanyl-L-leucine 
• 75244-08-5 4-nitrobenzyl ester of N-benzyloxycarbonyl-O-benzyl-L-tyrosylglycylglycyl-L-phenylalanyl-L-leucine 
• 75244-07-4 glycylglycyl-L-phenylalanyl-L-leucine p-nitrobenzyl ester hydrobromide 

Relevant academic research and scientific papers

O-(N-ACYLAMINOACYL)-2-PYRIDYLMETHYLKETOXIMES AND THEIR USE IN PEPTIDE SYNTHESIS

Preparation of Leu-enkephalin, Met-enkephalin and one analog of Leu-enkephalin by using O-(N-acylaminoacyl)-2-pyridylketoximes is described.Both the side products and the unreacted active amino acid derivatives were removed by utilizing the formation of a copper complex with 2-pyridylmethylketoxime.

3-O--HYDROXY-2-PHENYLINDENONES, PREPARATION AND USE IN THE SYNTHESIS OF PEPTIDES

Several 3-O--hydroxy-2-phenylindenones were obtained and used in the synthesis of peptides.Synthesis of Leu-enkephalin was carried out.