tranexamic acid 、
1-({[(2,5-Dioxopyrrolidin-1-yl)oxy]carbonyl}oxy)propyl propanoate 以
MTBE acetone water 为溶剂,
以to yield the title compound 28 (173 mg, 53% yield) as a white powder的产率得到trans-4-{[1-(propanoyloxy)propoxycarbonyl]aminomethyl}-cyclohexanecarboxylic acid