2-乙酰氨基-1,3,4,6-四-O-（三甲基硅基）-2-脱氧-α-D-吡喃葡萄糖
2-Acetyl-amino-1,3,4,6-tetra-O-(tri-methyl-silyl)-2-de-oxy-α-d-gluco-pyran-ose.
作者信息
Cheng Zhao-Dong, Cui Yan-Li, Mao Jian-Wei
机构信息
Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang 310027, People's Republic of China.
出版信息
Acta Crystallogr Sect E Struct Rep Online. 2013 May 18;69(Pt 6):o917. doi: 10.1107/S160053681301266X. Print 2013 Jun 1.
The title compound, C20H47NO6Si4, was synthesized by per-O-tri-methyl-silylation of N-acetyl-d-glucosa-mine using chloro-tri-methyl-silane in the presence of hexa-methyl-disiloxane. The tri-methyl-silyl group and acetamido group are located on the same side of the pyran ring, showing an α-configuration glycoside. One of the tri-methyl-silyl groups is disordered over two orientations, with site-occupancy factors of 0.625 (9) and 0.375 (9). In the crystal, N-H⋯O hydrogen bonds link the mol-ecules into supra-molecular chains along the a-axis direction.
标题化合物C₂₀H₄₇NO₆Si₄是通过在六甲基二硅氧烷存在下，用氯三甲基硅烷对N-乙酰基-d-葡萄糖胺进行全-O-三甲基硅基化反应合成的。三甲基硅基和乙酰氨基位于吡喃环的同一侧，呈现α构型糖苷。其中一个三甲基硅基在两个取向上无序，占有率分别为0.625 (9)和0.375 (9)。在晶体中，N-H⋯O氢键将分子沿a轴方向连接成超分子链。
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