4-Pentenyl α-L-fucopyranoside 在
iodonium di(2,4,6-trimethylpyridine) perchlorate 、 4 A molecular sieve 、
sodium methylate 、 sodium hydride 、
对甲苯磺酸 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
生成 [(3aS,4R,6S,7R,7aS)-7-[[(3aR,4S,6S,7S,7aR)-7-[(4-methoxyphenyl)methoxy]-2,2,4-trimethyl-4,6,7,7a-tetrahydro-3aH-[1,3]dioxolo[4,5-c]pyran-6-yl]oxy]-6-[(R)-[(4S,5R)-5-(dimethoxymethyl)-2,2-dimethyl-1,3-dioxolan-4-yl]-[(4R)-2,2-dimethyl-1,3-dioxolan-4-yl]methoxy]-2,2-dimethyl-4,6,7,7a-tetrahydro-3aH-[1,3]dioxolo[4,5-c]pyran-4-yl]methanol