methyl 2,6-anhydro-3-deoxy-4,5:7,8-di-O-isopropylidene-D-glycero-D-talo-octonate 在
sodium hydroxide 作用下,
以
水 为溶剂,
反应 2.0h,
以78%的产率得到(3aR,4R,6S,7aR)-4-[(4R)-2,2-dimethyl-1,3-dioxolan-4-yl]-2,2-dimethyl-4,6,7,7a-tetrahydro-3aH-[1,3]dioxolo[4,5-c]pyran-6-carboxylic acid;N,N-diethylethanamine