【摘要】 采用葡萄糖作原料经乙酰化、溴化和硫氰酸化三步合成了 2 ,3,4 ,6 -四 -O-乙酰基 -β-D-吡喃葡萄糖基异硫氰酸酯 ,培养出了单晶 ,用 X射线衍射分析了其晶体结构 .结果表明 ,晶体为正交晶系 ,P2 1 2 1 2 1 空间群 ,a=0 .72 6 2 4 ( 2 ) nm,b=1 .1 75 0 8( 2 ) nm,c=2 .1 72 1 0 ( 5 ) nm,α=β=γ=90°,V=1 .85 36 5 ( 7) nm,Z=4 ,R=0 .0 5 31 ,w R=0 .1 35 9.更多还原

【Abstract】 The title compound, 2,3,4,6-tetra-O-acetyl-(β-D-glycosyl)-isothiocyanate( C 15H 27·NO 9S), were synthesized and its crystal structure was characterized. It crystallizes in cubic system, space group P2 12 12 1 with the cell parameters a=1 294 3(3) nm, b=0 828 40(2) nm, c=1 514 8(3) nm, V=\{1 623 9(6)\} nm 3, Z=4. The hexopyranosyl ring adopts a normal 4C 1 chair conformation with total puckering amplitude, Q T of 0 606.更多还原