3-(5S-isopropyl-4S-methoxycarbonyl-2-phenyl-4,5-dihydro-oxazol-4-yl)-3S-hydroxy-2R-methyl-N,N-diethylpropionamide

(2R,3S)-3-hydroxy-3-((4S,5S)-5-isopropyl-4-(methoxycarbonyl)-2-phenyl-4,5-dihydrooxazol-4-yl)-2-methylpropanoic acid

methyl (4S,5S)-4-((1S,2S,E)-1-hydroxy-6-methoxy-2-methyl-6-oxohex-3-en-1-yl)-5-isopropyl-2-phenyl-4,5-dihydrooxazole-4-carboxylate

methyl (2R,3S,4R)-3-hydroxy-2-((S)-1-hydroxy-2-methylpropyl)-1-(4-methoxybenzyl)-4-methyl-5-oxopyrrolidine-2-carboxylate

methyl (2R,3S,4R)-3-((tert-butyldimethylsilyl)oxy)-2-((S)-1-hydroxy-2-methylpropyl)-1-(4-methoxybenzyl)-4-methyl-5-oxopyrrolidine-2-carboxylate