(3R,6S,7S)-16,17-bis(benzyloxy)-8-methoxy-1,15-dioxo-3-propyl-1,3,4,6,7,15-hexahydro-[1,3]dioxolo[4,5-a]pyrano[4',3':6,7]naphtho[2,1-i]xanthene-6,7-diyl diacetate 、 lead(IV) tetraacetate 以
苯 为溶剂,
反应 1.0h,
以94%的产率得到[(18S,19S,24R)-8,18-diacetyloxy-16-methoxy-4,26-dioxo-2,28-bis(phenylmethoxy)-24-propyl-7,9,14,25-tetraoxaheptacyclo[15.12.0.03,15.05,13.06,10.020,29.022,27]nonacosa-1,3(15),5(13),6(10),11,16,20(29),21,27-nonaen-19-yl] acetate