Methyl 3,4-O-Isopropylidene-2-O-(4-methoxybenzyl)-1-Thio-β-L-Fucopyranoside 、
(3aR,4S,6S,7S,7aS)-6-((3aR,4S,6R,7S,7aR)-6-Methoxy-2,2,4-trimethyl-tetrahydro-[1,3]dioxolo[4,5-c]pyran-7-yloxy)-2,2,4-trimethyl-tetrahydro-[1,3]dioxolo[4,5-c]pyran-7-ol 在
四丁基溴化铵 、
copper(ll) bromide 作用下,
以
1,2-二氯乙烷 、
N,N-二甲基甲酰胺 为溶剂,
反应 24.0h,
以66%的产率得到(3aR,4S,6S,7S,7aR)-6-[[(3aR,4S,6S,7S,7aR)-6-[[(3aR,4S,6R,7S,7aR)-6-methoxy-2,2,4-trimethyl-4,6,7,7a-tetrahydro-3aH-[1,3]dioxolo[4,5-c]pyran-7-yl]oxy]-2,2,4-trimethyl-4,6,7,7a-tetrahydro-3aH-[1,3]dioxolo[4,5-c]pyran-7-yl]oxy]-7-[(4-methoxyphenyl)methoxy]-2,2,4-trimethyl-4,6,7,7a-tetrahydro-3aH-[1,3]dioxolo[4,5-c]pyran