(1R,2R)-(2-羟基-1-羟基甲基-丙基)-氨基甲酸叔丁酯

(2,5-dioxopyrrolidin-1-yl) 4-cyanobenzoate

叔丁氧羰基-天冬氨酰胺酰-琥珀酰亚胺

苄氧羰基-D-缬氨酰-琥珀酰亚胺

(2,5-dioxopyrrolidin-1-yl) 4-bromobutanoate