1-methyl-6-(phenylmethoxy)-10-<(2,3,4,6-tetra-O-acetyl-β-D-glucopyranosyl)oxy>benzo<1>benzopyrano<5,4,3-cde><1>benzopyran-5,12-dione 在
sodium methylate 作用下,
以
甲醇 、
氯仿 为溶剂,
反应 1.33h,
以71%的产率得到6-Benzyloxy-1-methyl-10-((2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-hydroxymethyl-tetrahydro-pyran-2-yloxy)-benzo[h]chromeno[5,4,3-cde]chromene-5,12-dione