137407-77-3

Upstream product

• 24424-99-5 di-tert-butyl dicarbonate 
• 137407-74-0 2-[((S)-{(1R,2S)-2-[(3-Hydroxy-pyridine-2-carbonyl)-amino]-1-methyl-2-[(R)-1-((S)-2-methylcarbamoyl-pyrrolidine-1-carbonyl)-propylcarbamoyl]-ethoxycarbonyl}-phenyl-methyl)-carbamoyl]-4-oxo-piperidine-1-carboxylic acid benzyl ester 
• 501-53-1 benzyl chloroformate 
• 137407-72-8 C₅₁H₅₇N₇O₁₃ 
• 137407-73-9 C₅₁H₅₈N₈O₁₂ 
• 668-72-4 Virginiamycin S₁ 
• 117505-35-8 (S)-2-({(S)-1-[(R)-2-((2S,3R)-2-[(3-Hydroxy-pyridine-2-carbonyl)-amino]-3-{(S)-2-[(4-oxo-piperidine-2-carbonyl)-amino]-2-phenyl-acetoxy}-butyrylamino)-butyryl]-pyrrolidine-2-carbonyl}-methyl-amino)-3-phenyl-propionic acid; compound with trifluoro-acetic acid 

Relevant academic research and scientific papers

UNEXPECTED INTERNAL PEPTIDE BUTOXYCARBONYLATION OF A LINEAR N-Me AMIDE PEPTIDE DERIVED FROM VIRGINIAMYCIN S AND RESULTING FAILURE FOR A CARBOXY-TERMINAL SEQUENCING. PREPARATION OF THE TETRAPEPTIDE SYNTHON Thr-D-Abu-Pro-MePhe-OBzl

Next to the preferential butoxycarbonylation of the picolinic hydroxyl group in Virginiamycin S1 (1a) and of VS-fragments derived therefrom, a second Boc-group is invariably and specifically implanted at the proximate amide bond preceding Thr (