tert-butyl N-[(4'-{[(3-methyl-1-benzofuran-2-yl)carbonyl]amino}-1,1'-biphenyl-4-yl)sulfonyl]-D-valinate

D-2-[4'-(benzofuran-2-ylmethoxy)biphenyl-4-sulfonylamino]-3-methylbutyric acid tert-butyl ester

D-2-{4'-[(benzofuran-2-carbonyl)methylamino]biphenyl-4-sulfonylamino}-3-methylbutyric acid tert-butyl ester

tert-butyl N-[(4'-{[(1-benzofuran-2-ylcarbonyl)oxy]methyl}-1,1'-biphenyl-4-yl)sulfonyl]-D-valinate

(R)-2-[4'-(benzothiazol-2-yloxymethyl)-biphenyl-4-sulfonylamino]-3-methyl-butyric acid tert-butyl ester