(R)-formylamino-(3-hydroxy-O1,O2;O5,O6-diisopropylidene-α-D-glucopyranos-3-yl)-acetic acid ethyl ester 在
吡啶 作用下,
反应 20.0h,
生成 (3a
R)-5
t-acetoxy-6-formyl-7a-hydroxy-2,2-dimethyl-(3a
r,4a
t,7a
t,7b
c)-hexahydro-[1,3]dioxolo[4',5':4,5]furo[2,3-
c]pyrrole-7
t-carboxylic acid ethyl ester