acetic acid 2,3-diacetoxy-7-O-(2',3',4',6'-tetra-O-benzoyl-β-D-glucopyranosyl)-6-oxo-2,3,4,4a,5,6-hexahydro[1,3]dioxolo[4,5-j]phenanthridin-4-yl ester 在
水 、
potassium carbonate 作用下,
以
甲醇 为溶剂,
反应 17.0h,
以94%的产率得到2,3,4-trihydroxy-7-(3,4,5-trihydroxy-6-hydroxymethyl-tetrahydro-pyran-2-yloxy)-3,4,4a,5-tetrahydro-2H-[1,3]dioxolo[4,5-j]phenanthridin-6-one