摩熵化学
数据库官网
小程序
打开微信扫一扫
首页 分子通 化学资讯 化学百科 反应查询 关于我们
请输入关键词

2-(trimethylsilyl)ethyl 2,3,6-tri-O-benzyl-4-O-(2,6-di-O-benzyl-β-D-galactopyranosyl)-β-D-glucopyranoside | 117253-42-6

中文名称
——
中文别名
——
英文名称
2-(trimethylsilyl)ethyl 2,3,6-tri-O-benzyl-4-O-(2,6-di-O-benzyl-β-D-galactopyranosyl)-β-D-glucopyranoside
英文别名
2-Trimethylsilylethyl 2,3,6-tri-O-benzyl-4-O-(2,6-di-O-benzyl-beta-D-galactopyranosyl)-beta-D-glucopyranoside;(2R,3R,4S,5R,6S)-6-[(2R,3R,4S,5R,6R)-4,5-bis(phenylmethoxy)-2-(phenylmethoxymethyl)-6-(2-trimethylsilylethoxy)oxan-3-yl]oxy-5-phenylmethoxy-2-(phenylmethoxymethyl)oxane-3,4-diol
2-(trimethylsilyl)ethyl 2,3,6-tri-O-benzyl-4-O-(2,6-di-O-benzyl-β-D-galactopyranosyl)-β-D-glucopyranoside化学式
CAS
117253-42-6
化学式
C52H64O11Si
mdl
——
分子量
893.159
InChiKey
LJIZHRMJXILXAS-MFYNJVLNSA-N
BEILSTEIN
——
EINECS
——
  • 物化性质
  • 计算性质
  • ADMET
  • 安全信息
  • SDS
  • 制备方法与用途
  • 上下游信息
  • 反应信息
  • 文献信息
  • 表征谱图
  • 同类化合物
  • 相关功能分类
  • 相关结构分类

计算性质

  • 辛醇/水分配系数(LogP):
    8.09
  • 重原子数:
    64
  • 可旋转键数:
    23
  • 环数:
    7.0
  • sp3杂化的碳原子比例:
    0.42
  • 拓扑面积:
    124
  • 氢给体数:
    2
  • 氢受体数:
    11

上下游信息

  • 上游原料
    中文名称 英文名称 CAS号 化学式 分子量

反应信息

  • 作为反应物:
    描述:
    2-(trimethylsilyl)ethyl 2,3,6-tri-O-benzyl-4-O-(2,6-di-O-benzyl-β-D-galactopyranosyl)-β-D-glucopyranoside吡啶四丁基碘化铵二正丁基氧化锡 作用下, 反应 21.0h, 生成 2-(Trimethylsilyl)ethyl 2,3,6-tri-O-benzyl-4-O-(4-O-acetyl-3-O-allyl-2,6-di-O-benzyl-β-D-galactopyranosyl)-β-D-glucopyranoside
    参考文献:
    名称:
    Synthesis of Double-Chain Bis-sulfone Neoglycolipids of the 2'-, 3'-, and 6'-Deoxyglobotrioses
    摘要:
    Partially protected 2-(trimethylsilyl)ethyl deoxylactosides (deoxygenated in the 2-, 3-, and 6-positions of the galactose unit) were synthesized via various routes and glycosylated with galactosyl donors to give the corresponding deoxytrisaccharides. Removal of the protecting groups gave the 2-(trimethylsilyl)ethyl 2'-, 3'-, and 6'-deoxyglobotriosides. Transformation of the protected trisaccharides into trichloroacetimidates, via the corresponding hemiacetals, proceeded in 86-96% overall yield. Glycosylation of 3-(hexadecylsulfonyl)-2-[(hexadecylsulfonyl)methyl]propanol with the trisaccharidic trichloroacetimidates, in 37-68% yield, followed by removal of protecting groups, gave the title neoglycolipids.
    DOI:
    10.1021/jo00127a042
  • 作为产物:
    描述:
    2-(trimethylsilyl)ethyl 2,3,6-tri-O-acetyl-4-O-(2,3,4,6-tetra-O-acetyl-β-D-galactopyranosyl)-β-D-glucopyranoside 在 sodium methylate 、 sodium hydride 、 对甲苯磺酸溶剂黄146 作用下, 以 甲醇 为溶剂, 反应 7.84h, 生成 2-(trimethylsilyl)ethyl 2,3,6-tri-O-benzyl-4-O-(2,6-di-O-benzyl-β-D-galactopyranosyl)-β-D-glucopyranoside
    参考文献:
    名称:
    2-(Trimethylsilyl)ethyl glycosides. 3. Synthesis, anomeric deblocking, and transformation into 1,2-trans 1-O-acyl sugars
    摘要:
    DOI:
    10.1021/jo00259a006
点击查看最新优质反应信息

文献信息

  • Silylene/Oxazolidinone Double-Locked Sialic Acid Building Blocks for Efficient Sialylation Reactions in Dichloromethane
    作者:Shinya Hanashima、Ken-ichi Sato、Yukishige Ito、Yoshiki Yamaguchi
    DOI:10.1002/ejoc.200900543
    日期:2009.9
    We describe efficient sialylation reactions in CH2Cl2 with the use of silylene/oxazolidinone double-locked sialic acid building blocks. The building blocks were synthesized from 4,5-oxazolidinone-protected phenylthiosialoside. In sialylation reactions towards primary and relatively reactive secondary hydroxy groups on the galactosides, the double-locked building blocks provided desired coupling products
    我们描述了使用亚甲硅烷基/恶唑烷酮双锁唾液酸构建块在 CH2Cl2 中的有效唾液酸化反应。构建块由 4,5-恶唑烷酮保护的苯基硫代唾液酸合成。在针对半乳糖苷上的伯羟基和相对反应性仲羟基的唾液酸化反应中,双锁结构单元以良好的收率和优异的α-选择性提供了所需的偶联产物。在与半乳糖苷的 C3-OH 的唾液酸化反应中,与使用恶唑烷酮锁定结构单元获得的结果相比,双锁定结构单元表现出明显更好的 α 选择性。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009)
  • Study of Interhalogens/Silver Trifluoromethanesulfonate as Promoter Systems for High-Yielding Sialylations
    作者:Andréas Meijer、Ulf Ellervik
    DOI:10.1021/jo0262412
    日期:2002.10.1
    halide nucleophile rather than activating the interhalogen compound and, by increasing the amount of AgOTf from 1 to 1.5 equiv (with respect to IBr), the yield in the model reaction improved from 74% to 89%. A comparison of two different anomeric leaving groups showed that glycal formation can be minimized using a thiophenyl donor instead of xanthate. By combining these observations, we were able to increase
    我们研究了卤素/银三氟甲磺酸盐(IX / AgOTf)促进的糖基化,发现形成的氧碳鎓离子(例如来自具有或不具有参与基团的化合物)对卤代亲核试剂的敏感性差异。这些差异可以使用HSAB理论来解释。通过将该理论应用于唾液酸化反应,我们将模型反应的产率从使用ICl的高度不可预测的35-46%提高到了使用IBr的74%。我们还表明,银离子最主要的作用是降低卤化物亲核试剂的浓度,而不是活化卤素间化合物,并且通过将AgOTf的量从1当量提高到1.5当量(相对于IBr),可以提高模型反应从74%提高到89%。对两个不同的异头离去基团的比较表明,使用硫代苯基供体而不是黄药可以最小化糖基的形成。通过结合这些观察,我们能够将模型反应的产率提高到97%。
  • Study of carbohydrate–carbohydrate interactions: total synthesis of 6d-deoxy Lewisx pentaosyl glycosphingolipid
    作者:Yanyan Zhang、Dengxiang Dong、Tao Zhou、Yongmin Zhang
    DOI:10.1016/j.tet.2010.07.025
    日期:2010.9
    This article describes total synthesis of 6d-deoxy Lewisx pentaosyl glycosphingolipid, a useful tool for study of the Lewisx–Lewisx interaction. A 6-deoxy galactose donor was condensed with a diol of glucosamine to provide regioselectively a β 1→4 linked disaccharide, which was further fucosylated to a protected deoxy Lewisx trisaccharide. Glycosylation of a lactoside diol with the 6d-deoxy Lewisx
    本文描述了6d-脱氧Lewis x戊糖基糖鞘脂的全合成,这是研究Lewis x –Lewis x相互作用的有用工具。将6-脱氧半乳糖供体与葡糖胺的二醇缩合以选择性地提供β1→4连接的二糖,将其进一步岩藻糖基化为受保护的脱氧Lewis x三糖。用6d-脱氧Lewis x三糖对乳糖苷二醇进行糖基化,可以以极好的收率选择性和立体选择性地产生五糖。化学修饰后,该五糖与3- O反应-苯甲酰化的叠氮鞘氨醇形成糖鞘脂,在叠氮化物还原后与硬脂酸缩合并脱保护后,得到目标化合物。
  • First synthesis of 3′-deoxy Lewisx pentasaccharide
    作者:Chafika Gourmala、Zhenyuan Zhu、Yun Luo、Bo Tao Fan、Saı¨d Ghalem、Yongzhou Hu、Yongmin Zhang
    DOI:10.1016/j.tetasy.2005.08.007
    日期:2005.9
    The total synthesis of 3′-deoxy Lewisx pentasaccharide is reported. 4-O-Acetyl-2,6-di-O-benzoyl-3-deoxy-β-d-xylo-hexopyranosyl trichloroacetimidate was condensed with a diol of glucosamine to give a disaccharide, which was further fucosylated to a Lewisx trisaccharide analogue. Glycosylation of a lactoside diol with this trisaccharide provided a pentasaccharide, which after deprotection, afforded the
    据报道3'-脱氧路易斯x五糖的总合成。将4 - O-乙酰基-2,6-二-O-苯甲酰基-3-脱氧-β-d-二甲苯基己吡喃糖基三氯乙酰亚胺酸酯与葡糖胺的二醇缩合得到二糖,将其进一步岩藻糖基化为Lewis x三糖类似物。乳糖苷二醇用该三糖的糖基化提供了五糖,其在脱保护后提供了目标五糖。
  • Novel Selectivity in Carbohydrate Reactions III. Selective Deprotection of p-Methoxybenzyl (PMBn) Ethers of Carbohydrates by Tin(IV)Chloride
    作者:K. P. Ravindranathan Kartha、Makoto Kiso、Akira Hasegawa、H. J. Jennings
    DOI:10.1080/07328309808002353
    日期:1998.5.1
    similarly achieved with great success, as for example, hydrogenolytic removal of a benzyl ether group in the presence of a methyl ether.3 However, the situation becomes more challenging when the same protecting group is used to mask more than one position in a polyfunctional molecule and their preferential partial deprotection is required. Selective unmaslung of one or more of such protecting groups has been
    在涉及在不同位置以各种方式衍生的多羟基化天然产物例如碳水化合物的多步合成中,正交去除一种或另一种类型的保护基至关重要。区分不同种类的保护基(例如醚,酯等)通常很可能会取得很大的成功,例如,在醚保护基存在的情况下通过催化酯交换选择性除去0-乙酰基,或在酯基团(如乙酸酯)存在下氢解去除苄基醚保护基。3在给定类别的保护基团中,不同类型的保护基团的区分也已经取得了巨大的成功,例如,在甲基醚存在下氢解除去苄基醚基团。3然而,当使用相同的保护基掩盖多官能分子中的一个以上的位置并且需要它们的优先的部分脱保护时,情况变得更具挑战性。在某些情况下,已经实现了一个或多个此类保护基团的选择性解除保护作用。4我们特别感兴趣的是由SnC14介导的过-0-苄基化1,6-脱水脱水甘露吡喃糖的2-0-苄基的区域选择性脱保护( 1)和Tic14(2)。考虑到对甲氧基苄基(PMBn)醚对路易斯酸催化剂的敏感性更高,以及苄基醚
查看更多