反应详情

4-(4-but-2-ynyloxybenzenesulfonyl)-1-(2-thienylcarbonyl)-4-piperidinecarboxylic acid was prepared following the procedure of Example 64 (step 5). Starting from Methyl 4-(4-but-2-ynyloxybenzenesulfonyl)-1-(2-thienylcarbonyl)-4-piperidinecarboxylate (435 mg, 0.94 mmol) in 8 ml of tetrahydrofuran:methanol (1:1), and 1N sodium hydroxide (1.89 ml, 1.89 mmol) to obtain 360 mg (86%) of the acid. HR-MS: m/z Calculated for C21H21NO6S2 448.0883; Found 448.0882.