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O-(2-deoxy-2-azido-3,4,6-tri-O-benzyl-β-D-galactopyranosyl) trichloroacetimidate | 205593-86-8

中文名称
——
中文别名
——
英文名称
O-(2-deoxy-2-azido-3,4,6-tri-O-benzyl-β-D-galactopyranosyl) trichloroacetimidate
英文别名
3,4,6-tri-O-benzyl-2-deoxy-2-azido-β-D-galactopyranosyl 2,2,2-trichloroacetimidate;[(2S,3R,4R,5R,6R)-3-azido-4,5-bis(phenylmethoxy)-6-(phenylmethoxymethyl)oxan-2-yl] 2,2,2-trichloroethanimidate
O-(2-deoxy-2-azido-3,4,6-tri-O-benzyl-β-D-galactopyranosyl) trichloroacetimidate化学式
CAS
205593-86-8
化学式
C29H29Cl3N4O5
mdl
——
分子量
619.932
InChiKey
UNTPMXAMWXTTHZ-SEFGFODJSA-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):
    7
  • 重原子数:
    41
  • 可旋转键数:
    13
  • 环数:
    4.0
  • sp3杂化的碳原子比例:
    0.34
  • 拓扑面积:
    84.4
  • 氢给体数:
    1
  • 氢受体数:
    8

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
  • 下游产品
    中文名称 英文名称 CAS号 化学式 分子量

反应信息

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文献信息

  • Synthesis of α-D-Gal<i>p</i>N<sub>3</sub>-(1-3)-D-Gal<i>p</i>N<sub>3</sub>: α- and 3-<i>O-</i>selectivity using 3,4-diol acceptors
    作者:Emil Glibstrup、Christian Marcus Pedersen
    DOI:10.3762/bjoc.14.258
    日期:——
    The motif α-D-GalpNAc-(1-3)-D-GalpNAc is very common in Nature and hence its synthesis highly relevant. The synthesis of its azido precursor has been studied and optimized in terms of steps, yields and selectivity. It has been found that glycosylation of the 3,4-diol acceptor is an advantage over the use of a 4-O-protected acceptor and that both regio- and anomeric selectivity is enhanced by bulky
    α-D-GalpNAc-(1-3)-D-GalpNAc基序在自然界很常见,因此其合成极为相关。已对其叠氮基前体的合成进行了步骤,产率和选择性方面的研究和优化。已经发现3,4-二醇受体的糖基化相对于使用4-O-保护的受体是有利的,并且庞大的6-O-保护基团提高了区域和异头异构体的选择性。受体和供体由共同的结构单元制成,限制了保护性操作,在这种情况下,不可避免的副反应。
  • A highly stereoselective construction of 1,2-trans-β-glycosidic linkages capitalizing on 2-azido-2-deoxy-d-glycosyl diphenyl phosphates as glycosyl donors
    作者:Toshifumi Tsuda、Seiichi Nakamura、Shunichi Hashimoto
    DOI:10.1016/j.tet.2004.08.076
    日期:2004.11
    The scope of TMSOTf-promoted glycosidation of 2-azido-2-deoxyglycopyranosyl diphenyl phosphates is investigated. The 3,4,6-tri-O-benzyl-protected glucosyl and galactosyl donors and the 4,6-O-benzylidene-protected galactosyl donor each react with a range of acceptor alcohols in the presence of a stoichiometric amount of TMSOTf in propionitrile at -78 degreesC to afford 1,2-trans-beta-linked disaccharides in high yields with alpha:beta ratios ranging from 9:91 to 1: > 99, regardless of the anomeric composition of the donor used. The use of propionitrile as a solvent at -78 degreesC has proven to be among the best choice for the highest levels of beta-selectivity reported to date for this type of glycosidation. A plausible reaction mechanism, which features a large equilibrium preference for alpha-glycosyl-nitrilium ions over beta-nitrilium ions, is proposed based on byproducts formed through their intermediacy and accounts for the observed excellent beta-selectivities. (C) 2004 Elsevier Ltd. All rights reserved.
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