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2I-VI,3I-VI,6II,III,V,VI-hexadeca-O-methyl-α-cyclomaltohexaose | 234445-76-2

中文名称
——
中文别名
——
英文名称
2I-VI,3I-VI,6II,III,V,VI-hexadeca-O-methyl-α-cyclomaltohexaose
英文别名
2(I), 2(II), 2(III), 2(IV), 2(V), 2(VI), 3(I), 3(II), 3(III), 3(IV), 3(V), 3(VI), 6(II), 6(III), 6(V),6(VI)-hexadeca-O-methyl-α-cyclodextrin
2<sup>I-VI</sup>,3<sup>I-VI</sup>,6<sup>II,III,V,VI</sup>-hexadeca-O-methyl-α-cyclomaltohexaose化学式
CAS
234445-76-2
化学式
C52H92O30
mdl
——
分子量
1197.28
InChiKey
KOAPAQBJRGUXTK-OQWQTNIPSA-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

物化性质

  • 熔点:
    202-203 °C
  • 沸点:
    1021.8±65.0 °C(predicted)
  • 密度:
    1.30±0.1 g/cm3(Temp: 20 °C; Press: 760 Torr)(predicted)

计算性质

  • 辛醇/水分配系数(LogP):
    -2.59
  • 重原子数:
    82.0
  • 可旋转键数:
    22.0
  • 环数:
    22.0
  • sp3杂化的碳原子比例:
    1.0
  • 拓扑面积:
    298.9
  • 氢给体数:
    2.0
  • 氢受体数:
    30.0

反应信息

  • 作为反应物:
    参考文献:
    名称:
    Preparation of di-O-triphenylmethyl-(trityl)-cyclomalto-hexaoses and -cyclomaltoheptaoses and characterization of three positional isomers of each by the “hex-5-enose degradation”
    摘要:
    Regioisomeric 6l,6n-di-O-trityl-cyclomaltohexaoses (cG6s) or -cyclomaltoheptaoses (cG7s) were prepared by the reaction of cyclomaltohexaose (1, cG6) or cylomaltoheptaose (5, cG7) with chlorotriphenylmethane methane in pyridine and isolation by h.p.l.c. The regiochemical determination of each three ditrityl-substituted substituted derivatives has been accomplished by the "hex-5-enose degradation", followed by measurement of their f.a.b.-mass spectra.
    DOI:
    10.1016/0008-6215(92)80001-h
  • 作为产物:
    参考文献:
    名称:
    底物结构控制环糊精氧化酶化学酶发挥的最大催化速率
    摘要:
    选择性修饰的 α- 和 β- 环糊精酮或醛在各种小的亲脂性底物上充当人工氧化酶。底物的结构是决定氧化反应催化效率的非常重要的因素。氨基酸型底物不易被催化,这产生了关于 CD 催化极限的新信息。苯胺显示出一些不可量化的催化作用,但对于醌和苯甲醇,未检测到净催化作用。对于氨基苯酚氧化,邻氨基苯酚是比对氨基苯酚更好的底物。CD 催化的反应遵循 Michaelis-Menten 动力学,涉及底物的 CD 腔结合和底物识别,因此包含许多天然酶催化的标志。共氧化剂 H2O2 与 CD 催化羰基的强结合是底物随后氧化的先决条件,因此,H2O2 与 β-CD 二醛的结合显示出很强的结合力(Kd = 1.4 mM)。β-CD 6A,6D-二酮与 H2O2 的结合比醛弱,因此是一种效率较低的氧化酶。适用于 CD 化学酶催化的广泛底物为合成生物学的未来范围带来了乐观。
    DOI:
    10.1007/s10847-010-9774-8
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文献信息

  • Easy Access to Modified Cyclodextrins by an Intramolecular Radical Approach
    作者:Dimitri Alvarez-Dorta、Elisa I. León、Alan R. Kennedy、Angeles Martín、Inés Pérez-Martín、Ernesto Suárez
    DOI:10.1002/anie.201412300
    日期:2015.3.16
    primary face of cyclodextrins (CDs) is described. The 6I‐O‐yl radical of α‐, β‐, and γ‐CDs regioselectively abstracts the H5II, located in the adjacent D‐glucose unit, by an intramolecular 1,8‐hydrogen‐atom‐transfer reaction through a geometrically restricted nine‐membered transition state to give a stable 1,3,5‐trioxocane ring. The reaction has been extended to the 1,4‐diols of α‐ and β‐CD to give the
    描述了一种简单的方法来修饰环糊精(CD)的主表面。α-,β-和γ-CD的6 I - O-基通过分子内的1,8-氢原子转移反应,通过区域选择性地抽象化位于相邻D-葡萄糖单元中的H5 II受限制的九元过渡态产生稳定的1,3,5-三氧杂环丁烷环。该反应已扩展至α-和β-CD的1,4-二醇,得到了相应的双(三氧杂环丁烷)。C 2对应于α-CD的对称双(三恶烷)是稳定的结晶固体,其结构已通过X射线衍射分析确定。计算出的几何参数证实该轮辋的主面朝着较窄的椭圆形严重变形。
  • Radical-Mediated C–H Functionalization: A Strategy for Access to Modified Cyclodextrins
    作者:Dimitri Alvarez-Dorta、Elisa I. León、Alan R. Kennedy、Angeles Martín、Inés Pérez-Martín、Ernesto Suárez
    DOI:10.1021/acs.joc.6b02241
    日期:2016.12.2
    A simple and efficient radical C–H functionalization to access modified cyclodextrins (CDs) has been developed. The well-defined conformation of glycosidic and aglyconic bonds in α-, β-, and γ-CDs favors the intramolecular 1,8-hydrogen atom transfer (HAT) promoted by the 6I-O-yl radical, which abstracts regioselectively the hydrogen at C5II of the contiguous pyranose. The C5II-radical evolves by a
    已开发出一种简单有效的自由基C–H功能化以获取修饰的环糊精(CD)。α-,β-和γ-CD中糖苷键和糖苷键的明确构象有利于6 I - O-自由基促进的分子内1,8-氢原子转移(HAT),该自由基选择性地提取氢在连续喃糖的C5 II处。该C5 II两个相邻的葡萄糖或可替代地之间-基团的演进通过极性交叉机构以稳定的1,3,5-三氧环触发一个的反转α- d葡萄糖成5- Ç -乙酰氧基-β-升-拥有1 C 4的同剂量单位构象。α-和β-CD的6 I,IV-和6 I,III-二醇的行为与一元醇相似,主要形成源自两个1,8-HAT连续过程的化合物。在6 I,II-二醇的情况下,相邻糖单元中的两个6- O-基团的接近允许通过1,8-HAT-β-分裂串联机制在CD骨架内形成独特的内酯环。在结晶的1,4-双(三氧杂环丁烷)-α-CD衍生物上进行的X射线衍射显示出主面朝着较窄的椭圆形严重变形。
  • Diametrically Opposed Carbenes on an α-Cyclodextrin: Synthesis, Characterization of Organometallic Complexes and Suzuki-Miyaura Coupling in Ethanol and in Water
    作者:Maxime Guitet、Filipa Marcelo、Ségolène Adam de Beaumais、Yongmin Zhang、Jesús Jiménez-Barbero、Sébastien Tilloy、Eric Monflier、Mickaël Ménand、Matthieu Sollogoub
    DOI:10.1002/ejoc.201300190
    日期:2013.6
    Two carbene-based ligands have been attached to perbenzylated and permethylated cyclodextrins. Their palladium complexes were synthesized, characterized and used as catalysts in Suzuki–Miyaura coupling reactions both in ethanol and water.
    两个基于卡宾的配体已连接到全苄基化和全甲基化环糊精。他们的配合物被合成、表征并用作乙醇中铃木-宫浦偶联反应的催化剂。
  • Permethylated NHC‐Capped α‐ and β‐Cyclodextrins (ICyD <sup>Me</sup> ) Regioselective and Enantioselective Gold‐Catalysis in Pure Water
    作者:Xiaolei Zhu、Guangcan Xu、Lise‐Marie Chamoreau、Yongmin Zhang、Virginie Mouriès‐Mansuy、Louis Fensterbank、Olivia Bistri‐Aslanoff、Sylvain Roland、Matthieu Sollogoub
    DOI:10.1002/chem.202001990
    日期:2020.12.4
    A series of water‐soluble encapsulated copper(I), silver(I) or gold(I) complexes based on NHC‐capped permethylated cyclodextrins (ICyDMe) were developed and used as catalysts in pure water for hydration, lactonization, hydroarylation and cycloisomerization reactions. ICyDMe ligands gave cavity‐based high regioselectivity in hydroarylations, and high enantioselectivities in gold‐catalyzed cycloisomerizations
    开发了一系列基于NHC封端的全甲基化环糊精(ICyD Me)的溶性包封的(I),(I)或(I)配合物,并将其用作纯中的合,内酯化,加氢芳基化和环异构化的催化剂反应。ICyD Me配体在加氢芳基化反应中具有基于腔的高区域选择性,在催化的环异构化反应中具有高对映选择性,在中可提供高达98%的 ee。因此,这些ICyD Me是在纯中选择性催化的有用配体
  • α-Cyclodextrins reversibly capped with disulfide bonds
    作者:Lukáš Kumprecht、Miloš Buděšínský、Petr Bouř、Tomáš Kraus
    DOI:10.1039/c0nj00126k
    日期:——
    Per-O-methyl-6I,6IV-disulfanyl-6I,6IV-dideoxy-α-cyclodextrin undergoes air oxidation at pH 9 to exclusively form a monomeric species having an intramolecular disulfide linkage capping the C6I and C6IV positions. In contrast, its non-methylated analogue, 6I,6IV-disulfanyl-6I,6IV-dideoxy-α-cyclodextrin, gives a mixture of monomeric and dimeric species under the same conditions. Molecular models show that in both cases of the monomeric species, the disulfide bonds effectively close the primary rims of the cyclodextrin cavities. The disulfide bonds of the capped cyclodextrins could be cleaved by reduction with dithiothreitol. Thus, the macrocyclic system can interchange the open-ended and cup-like forms by the application of external stimuli.
    Per-O-methyl-6I,6IV-disulfanyl-6I,6IV-dideoxy-α-cyclodextrin 在 pH 9 下经历空气氧化,专门形成具有分子内二键覆盖 C6I 和 C6IV 位置的单体。相反,其非甲基化类似物6I,6IV-二基-6I,6IV-二脱氧-α-环糊精在相同条件下给出单体和二聚体的混合物。分子模型表明,在两种单体情况下,二键有效地封闭了环糊精空腔的初级边缘。封端环糊精的二键可以通过用二苏糖醇还原来裂解。因此,大循环系统可以通过施加外部刺激来互换开放式和杯状形式。
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