rubellin A 、
碘甲烷 在
silver(l) oxide 作用下,
以
丙酮 为溶剂,
反应 48.0h,
以90 mg的产率得到(1S,17R,20R,21S,30S)-5,20,30-trihydroxy-9,25-dimethoxy-27-methyl-22-oxaheptacyclo[15.13.0.01,21.03,16.06,15.08,13.024,29]triaconta-3,5,8(13),9,11,15,18,24(29),25,27-decaene-7,14,23-trione