tert-butyl ((S)-1-(5-((4aR,10aS)-5,6-dihydroxy-7-isopropyl-1,1-dimethyl-9-oxo-1,3,4,9,10,10a-hexahydrophenanthren-4a(2H)-yl)-1,3,4-oxadiazol-2-yl)ethyl)carbamate 在
2,3-二氯-5,6-二氰基-1,4-苯醌 作用下,
以
1,4-二氧六环 为溶剂,
反应 0.5h,
生成 tert-butyl ((S)-1-(5-((4aR,10aS)-7-isopropyl-1,1-dimethyl-5,6,9-trioxo-1,3,4,5,6,9,10,10a-octahydrophenanthren-4a-(2H)-yl)-1,3,4-oxadiazol-2-yl)ethyl)carbamate