benzyl (2R,5S,8aS)-5-ethenyl-2-methyl-4-tri(propan-2-yl)silyloxy-2,3,5,7,8,8a-hexahydropyrano[3,2-c]pyridine-6-carboxylate 在
四丁基氟化铵 、
溶剂黄146 作用下,
以
四氢呋喃 为溶剂,
反应 1.5h,
以0.16 g的产率得到(2R,4aR,5S,8S)-2-methyl-4-oxo-5-vinylhexahydro-2H-pyrano[3,2-c]pyridine-6(7H)-carboxylic acid benzyl ester