3695-79-2

Upstream product

• 3257-18-9 benzyloxycarbonyl-S-benzylcysteine 
• 623-33-6 glycine ethyl ester hydrochloride 
• 459-73-4 GlyOEt*HCl 
• 2949-22-6 Glycine ethyl ester isocyanate 
• 3401-37-4 S-benzyl-N-carbobenzoxy-L-cysteine p-nitrophenyl ester 
• 75243-89-9 (R)-2-Benzyloxycarbonylamino-3-benzylsulfanyl-propionic acid 3-oxo-2-phenyl-3H-inden-1-yl ester 
• 3695-61-2 S-benzyl-N-benzyloxycarbonyl-L-cysteine hydrazide 
• 2688-16-6 Z-L-Cys(CH₂C₆H₅)-O-N=C(CH₃)-C₆H₄-m-NO₂ 
• 19704-40-6 N-Benzyloxycarbonyl-S-benzyl-cystein-p-dimethylaminophenylester-methoiodid 
• 7625-65-2 L-carbobenzyloxy-β-chloroalanine 
• 54769-22-1 1-methanesulfonyloxy-1,2,3-benzotriazole 
• 501-53-1 benzyl chloroformate 

Downstream Products

• 100135-16-8 (R)-3-(benzylmercapto-methyl)-piperazine-2,5-dione 
• 55559-23-4 N-benzyloxycarbonyl-S-benzylcysteinyl-glycine 
• 51814-09-6 N-(S-benzyl-N-benzyloxycarbonyl-L-cysteinyl)-glycine hydrazide 
• 109401-63-0 [(R)-4-(benzylmercapto-methyl)-2,5-dioxo-imidazolidin-1-yl]-acetic acid 
• 57355-88-1 S-benzyl-L-cysteinylglycine ethyl ester 
• 7669-84-3 S-benzyl-L-cysteinylglycine 

Relevant academic research and scientific papers

Sulfonic acid esters

A novel process for the amidation or esterification which comprises reacting a compound having a carboxy group with a compound having an amino or imino group which can be acylated or with a compound having a hydroxy group in the presence of a sulfonic acid ester of the formula: wherein R1 is an organic group and R2 O-- is a residue of a strongly acidic N-hydroxy compound as a condensation agent, and a novel sulfonic acid ester useful as such a condensation agent and a process for the preparation thereof.

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.

3-(5-NITRO-2-PYRIDON-1-YL)-1,2-BENZOISOTHIAZOLE 1,1-DIOXIDE (BID-NPy) AS A NEW EFFECTIVE CONDENSING REAGENT

3-(5-Nitro-2-pyridon-1-yl)-1,2-benzoisothiazole 1,1-dioxide (BID-NPy) was found to be a useful condensing reagent.Various dipeptides and esters were prepared in good yields using this reagent.