2-Methyl-2-propanyl [(3R,6S)-6-(2,3-difluorophenyl)-2-oxo-3-azepa nyl]carbamate

(3R,6s)-3-氨基-6-(2,3-二氟苯基)-1-(2,2,2-三氟乙基)氮杂环庚烷-2-酮

1-Benzyl 5-methyl N,N-bis{[(2-methyl-2-propanyl)oxy]carbonyl}-D-g lutamate

Benzyl (2R,5E)-2-(bis{[(2-methyl-2-propanyl)oxy]carbonyl}amino)-6 -nitro-5-hexenoate

Benzyl N,N-bis{[(2-methyl-2-propanyl)oxy]carbonyl}-5-oxo-D-norval inate