(1S,2R)-2-[(3-methoxycarbonyl-5,6,7,8-tetrahydro-4H-cyclohepta[b]thiophen-2-yl)carbamoyl]cyclohexane-1-carboxylic acid 在
水 、 sodium hydroxide 作用下,
以99 %的产率得到2-[(2-carboxycyclohexane-1-carbonyl)amino]-5,6,7,8-tetrahydro-4H-cyclohepta[b]thiophene-3-carboxylic acid