HCID 18465758, compound → HCID 22094357, compound

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N-2-(6-Benzyl-1,2-dihydro-2-oxo-3-(3-phenylpropionyl)amino-1-pyridyl)acetyl-3-amino-5-(2-chlorobenzyloxy)-4-oxo-pentanoic acid (90) was prepared from 52b and (3S) t-butyl N-(allyloxycarbonyl)-3-amino-5-(2-chlorophenyl-methoxyl)-4-oxo-pentanoate (prepared by a similar method as 82) to give a white solid: 1H NMR (DMSO-d6) δ 9.2 (s, 1H), 8.75 (d, 1H), 7.7-7.1 (m, 14H), 6.4 (d, 1H), 4.65 (d, 6H), 4.56 (s, 1H), 4.6-4.35 (dd, 1H), 3.9 (s, 2H), 2.9-2.6 (m, 6H)

Provenance & Evidence