(1r,2s)-2-(boc-氨基)环戊烷羧酸乙酯

(1R,5S)-6-((S)-1-(4-methoxyphenyl)ethyl)-6-azabicyclo[3.2.0]heptan-7-one

6-羟基己酸乙酯

6-氧代己酸乙酯