二碳酸二叔丁酯 、
((1R,5S,7S)-10,10-Dimethyl-3,3-dioxo-3λ6-thia-4-aza-tricyclo[5.2.1.01,5]dec-4-yl)-(S)-pyrazolidin-3-yl-methanone 生成 (S)-3-((1R,5S,7S)-10,10-Dimethyl-3,3-dioxo-3λ6-thia-4-aza-tricyclo[5.2.1.01,5]decane-4-carbonyl)-pyrazolidine-1-carboxylic acid tert-butyl ester