6α-acetoxyazadirone 在
N-溴代丁二酰亚胺(NBS) 、
溶剂黄146 作用下,
以
丙酮 为溶剂,
反应 0.75h,
以50%的产率得到Acetic acid (6R,7S,8R,10R,13S,17R)-6-acetoxy-17-(4-hydroxy-5-oxo-4,5-dihydro-furan-3-yl)-4,4,8,10,13-pentamethyl-3-oxo-4,5,6,7,8,9,10,11,12,13,16,17-dodecahydro-3H-cyclopenta[a]phenanthren-7-yl ester