(S)-3-pyridin-3-yl-3-(5,5,6,6-tetramethyl-4,4-dioxo-5,6-dihydro-4H-4lambda6-1,4,3-oxathiazin-2-ylamino)propionic acid methyl ester trifluoroacetate 、
甲基溴化镁 以
四氢呋喃 、
乙醚 为溶剂,
反应 0.5h,
以25.1 mg的产率得到(S)-2-methyl-4-pyridin-3-yl-4-(5,5,6,6-tetramethyl-4,4-dioxo-5,6-dihydro-4H-4lambda6-[1,4,3]oxathiazin-2-ylamino)butan-2-ol