Tert-butyl 3-(5-(5-bromo-3-(2-ethylpyridin-3-yloxy)pyridin-2-ylamino)-1,2,4-thiadiazol-3-yl)-8-azabicyclo[3.2.1]octane-8-carboxylate 、
3-巯基丙酸甲酯 以afforded tert-butyl 3-(5-(3-(2-ethylpyridin-3-yloxy)-5-(3-methoxy-3-oxopropylthio)pyridin-2-ylamino)-1,2,4-thiadiazol-3-yl)-8-azabicyclo[3.2.1]octane-8-carboxylate (115 mg, 0.183 mmol, 89.8% yield)的产率得到tert-butyl 3-(5-(3-(2-ethylpyridin-3-yloxy)-5-(3-methoxy-3-oxopropylthio)pyridin-2-ylamino)-1,2,4-thiadiazol-3-yl)-8-azabicyclo[3.2.1]octane-8-carboxylate