Nalpha-isobutyl-Nalpha-(4-nitrobenzenesulfonyl)-L-lysine hydrochloride → (2S)-2-[(4-aminophenyl)sulfonyl-isobutyl-amino]-6-[[(2S)-2-[[2-(4-methoxyphenyl)acetyl]amino]-3-phenyl-propanoyl]amino]hexanoic acid

Participants

Reaction Steps

The title compound was prepared from Nα-isobutyl-Nα-(4-nitrobenzenesulfonyl)-L-lysine hydrochloride (200 mg, 0.45 mmol, example 5, step C) as described in general procedure Bc using Nα-(4-methoxyphenylacetyl)-L-phenylalanine (example 132, step A). The final product, Nα-isobutyl-Nα-(4-nitrobenzenesulfonyl)-Nε-[N′α-(4-methoxyphenylacetyl)-L-phenylalanyl]-L-lysine was subsequently hydrogenolysed following the indications of general procedure E. Purification by HPLC gave the desired material (7 mg, 4%).

Provenance & Evidence