(4S,5R)-1-tert-butoxycarbonyl-4-hydroxy-5-iso-butyl-2-pyrrolidinone

(3S,4S)-N-(tert-butoxycarbonyl)-4-amino-1,3-dihydroxy-6-methylheptane

(3S,4S)-4-(tert-butoxycarbonylamino)-3-hydroxy-6-methylheptanoic acid ethyl ester

(3S,4S)-4-(tert-butoxycarbonylamino)-6-methyl-1-trimethylsilylhept-1-yn-3-ol

2-甲基-2-丙基[(2S)-4-甲基-1-氧代-2-戊烷基]氨基甲酸酯