以
水 为溶剂,
以13.3 mg的产率得到[(1S,19R,20R,21S,22R)-6,7,8,11,12,13,20-heptahydroxy-3,16-dioxo-21-(3,4,5-trihydroxybenzoyl)oxy-2,17,23-trioxatetracyclo[17.3.1.04,9.010,15]tricosa-4,6,8,10,12,14-hexaen-22-yl] 3,4,5-trihydroxy-2-[(7,13,14-trihydroxy-3,10-dioxo-2,9-dioxatetracyclo[6.6.2.04,16.011,15]hexadeca-1(15),4,6,8(16),11,13-hexaen-6-yl)oxy]benzoate