9-芴甲基-N-琥珀酰亚胺基碳酸酯

(2R)-2-(Aminomethyl)-4-methylpentanoic acid

benzyl 4-methyl-2-methylidenepentanoate

2-acetyl-4-methyl-pentanoic acid benzyl ester

(4R)-isobutyl-2-((S)-1-phenylethyl)-isoxazolidin-5-one