tert-butyl 4-[2-[5-[[(2S)-2-(benzylcarbamoylamino)-3-methoxy-3-oxopropyl]carbamoyl]thieno[3,2-b]thiophen-2-yl]ethyl]piperidine-1-carboxylate 在
盐酸 、 lithium hydroxide 作用下,
生成 (2S)-2-(benzylcarbamoylamino)-3-[[2-(2-piperidin-4-ylethyl)thieno[3,2-b]thiophene-5-carbonyl]amino]propanoic acid