(+/-)-(E)-1-(7'-hydroxy-5'-isopropylidene-9'-methoxy-2'-methyl-3',4',5',6'-tetrahydro-2',6'-methano-2'H-1-benzoxocin-8'-yl)-3-phenylprop-2-en-1-one 在
硫酸 作用下,
以
乙醇 为溶剂,
反应 18.0h,
以0.0043 g的产率得到(+/-)-5-isopropylidene-11-methoxy-2-methyl-8-phenyl-3,4,5,6,8,9-hexahydro-2,6-methano-2H,10H-pyrano<2,3-h>-1-benzoxocin-10-one