(7S,8R)-8-(3,4,5-trimethoxyphenyl)-2,12,14-trioxatetracyclo[7.7.0.03,7.011,15]hexadeca-1(16),9,11(15)-trien-3-ol 在
potassium hydrogensulfate 作用下,
以74%的产率得到8-(3,4,5-Trimethoxyphenyl)-2,12,14-trioxatetracyclo[7.7.0.03,7.011,15]hexadeca-1(16),3(7),9,11(15)-tetraene