908299-17-2

Upstream product

• 908298-92-0 (2R,5S)-(4-benzyl-6-ethoxy-5-isopropyl-2-methyl-3-oxo-2,3,4,5-tetrahydro-pyrazin-2-yl)-acetic acid benzyl ester 
• 908298-93-1 (2R,5S)-(6-ethoxy-5-isopropyl-2-methyl-3-oxo-2,3,4,5-tetrahydro-pyrazin-2-yl)-acetic acid 
• 14533-84-7 pentafluorophenyl trifloroacetate 

Downstream Products

• 1268691-48-0 N₂-{2-[(2R,5S)-6-ethoxy-2,3,4,5-tetrahydro-2-methyl-5-isopropyl-3-oxopyrazin-2-yl]acetyl}-N₅,N₅-dibenzyl-D-ornithyl-L-valine ethyl ester 
• 1268691-46-8 N-{(2R)-4-(dibenzylamino)-2-{{2-[(2R,5S)-6-ethoxy-2,3,4,5-tetrahydro-2-methyl-5-isopropyl-3-oxopyrazin-2-yl]acetyl}amino}-1-oxobutyl}-L-valine ethyl ester 
• 1268691-56-0 N2-acetyl-N-[(1S)-1-(ethoxycarbonyl)-2-methylpropyl]-2-methyl-D-α-asparaginyl-N5,N5-dibenzyl-D-ornithyl-L-valine ethyl ester 
• 1268691-54-8 N₂-acetyl-N-{(1R)-3-(dibenzylamino)-1-{{[(1S)-1-(ethoxycarbonyl)-2-methylpropyl]amino}carbonyl}propyl}-2-methyl-D-asparaginyl-L-valine ethyl ester 
• 929210-03-7 1-{2(S)-[2-(6-ethoxy-5(S)-isopropyl-2(R)-methyl-3-oxo-2,3,4,5-tetrahydro-pyrazin-2-yl)-acetylamino]-3-methyl-butyryl}-2(S)-methyl-4-methylene-pyrrolidine-2-carboxylic acid cyclohexyl amide 
• 929210-10-6 1-{2(S)-[2-(6-ethoxy-5(S)-isopropyl-2(R)-methyl-3-oxo-2,3,4,5-tetrahydro-pyrazin-2-yl)-acetylamino]-3-methyl-butyryl}-2(R)-methyl-4-methylene-pyrrolidine-2-carboxylic acid cyclohexyl amide 
• 929210-09-3 1-{2(S)-[2-(6-ethoxy-5(S)-isopropyl-2(R)-methyl-3-oxo-2,3,4,5-tetrahydro-pyrazin-2-yl)-acetylamino]-3-methyl-butyryl}-4-methylene-pyrrolidine-2(R)-carboxylic acid cyclohexyl amide 
• 908299-02-5 (2R,5S,2'S,5'R)-8'-(6-ethoxy-5-isopropyl-2-methyl-3-oxo-2,3,4,5-tetrahydro-pyrazin-2-yl)-3',6'-diaza-4',7'-dioxo-2'-isopropyl-5'-methyl-5'-(benzyloxycarbonylmethyl)octanoic acid ethyl ester 

Relevant academic research and scientific papers

Stereoselective synthesis of a new chiral synthon: a cyclic pseudodipeptide containing an aspartic acid derivative and l-valine

A simple stereoselective synthesis of cyclic synthons 4a,b and 10a,b, derived from an l-valine unit and an unnatural derivative of the aspartic acid, has been accomplished starting from the chiral synthon 1 and following the procedure already reported by