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首页> 外文期刊>Journal of chemical crystallography >Synthesis and Crystal Structure of 1,2,3-Tri-O-acetyl-4,6-di-O-benzylidene-beta-D-glucopyranose
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Synthesis and Crystal Structure of 1,2,3-Tri-O-acetyl-4,6-di-O-benzylidene-beta-D-glucopyranose

机译:1,2,3-三-O-乙酰基-4,6-二-O-亚苄基-β-D-吡喃葡萄糖的合成及晶体结构

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摘要

The crystal of 1,2,3-Tri-O-acetyl-4,6-di-Obenzylidene-beta-D-glucopyranose (I) was studied by X-ray diffraction. (I) crystallizes in the monoclinic space group P2(1) with cell parameters of a = 5.691(3) angstrom, b = 7.770(2) angstrom, c = 22.503(7) angstrom, b = 93.58(5)degrees, V = 993.1(7) angstrom(3) and Z = 2. The molecular structure of (I) consists of a 4,6-O-benzylidene-glucopyranose moiety which has the 4-OH and 6-OH groups of the glucopyranose protected by glycosidic bonding to a benzylic carbon, forming a benzyl acetal. The other OH groups of the glucopyranose ring are also protected with three acetate groups. In the crystal structure adjacent molecules are linked by C-H center dot center dot center dot O hydrogen bonds.
机译:通过X射线衍射研究了1,2,3-三-O-乙酰基-4,6-二-O-亚苄基-β-D-吡喃葡萄糖(I)的晶体。 (I)在单斜空间群P2(1)中结晶,其单元参数为a = 5.691(3)埃,b = 7.770(2)埃,c = 22.503(7)埃,b = 93.58(5)度,V = 993.1(7)埃(3),Z = 2。(I)的分子结构由4,6-O-亚苄基-吡喃葡萄糖部分组成,该吡喃葡萄糖的4-OH和6-OH基团被保护。糖苷键结合到苄基碳上,形成苄基乙缩醛。吡喃葡萄糖环的其他OH基团也被三个乙酸酯基团保护。在晶体结构中,相邻分子通过C-H中心点中心点中心点O氢键连接。

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