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methyl 3-O-acetyl-6-O-(tert-butyldimethylsilyl)-α-D-galactopyranoside | 1452154-03-8

中文名称
——
中文别名
——
英文名称
methyl 3-O-acetyl-6-O-(tert-butyldimethylsilyl)-α-D-galactopyranoside
英文别名
methyl 3-O-acetyl-6-O-(tert-butyldimethylsilyloxy)-α-D-galactopyranoside;Methyl-3-O-(acetyl)-6-(tert-butyldimethylsiloxy)-alpha-D-galactopyranoside;[(2R,3S,4S,5R,6S)-2-[[tert-butyl(dimethyl)silyl]oxymethyl]-3,5-dihydroxy-6-methoxyoxan-4-yl] acetate
methyl 3-O-acetyl-6-O-(tert-butyldimethylsilyl)-α-D-galactopyranoside化学式
CAS
1452154-03-8
化学式
C15H30O7Si
mdl
——
分子量
350.485
InChiKey
QXMXGCBOHYLFOC-BJJPWKGXSA-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):
    1.03
  • 重原子数:
    23.0
  • 可旋转键数:
    5.0
  • 环数:
    1.0
  • sp3杂化的碳原子比例:
    0.93
  • 拓扑面积:
    94.45
  • 氢给体数:
    2.0
  • 氢受体数:
    7.0

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

点击查看最新优质反应信息

文献信息

  • Catalyst recognition of cis-1,2-diols enables site-selective functionalization of complex molecules
    作者:Xixi Sun、Hyelee Lee、Sunggi Lee、Kian L. Tan
    DOI:10.1038/nchem.1726
    日期:2013.9
    Carbohydrates and natural products serve essential roles in nature, and also provide core scaffolds for pharmaceutical agents and vaccines. However, the inherent complexity of these molecules imposes significant synthetic hurdles for their selective functionalization and derivatization. Nature has, in part, addressed these issues by employing enzymes that are able to orient and activate substrates within a chiral pocket, which increases dramatically both the rate and selectivity of organic transformations. In this article we show that similar proximity effects can be utilized in the context of synthetic catalysts to achieve general and predictable site-selective functionalization of complex molecules. Unlike enzymes, our catalysts apply a single reversible covalent bond to recognize and bind to specific functional group displays within substrates. By combining this unique binding selectivity and asymmetric catalysis, we are able to modify the less reactive axial positions within monosaccharides and natural products. The manipulation of complex molecules offers an avenue for developing new therapeutics and biological probes. Here, a catalyst is described that forms a covalent bond to the substrate before selectively functionalizing a proximal functional group. Cis-1,2-diols are targeted allowing for the derivatization of the axial hydroxyls of monosaccharides in the presence of unprotected equatorial hydroxyls.
    碳水化合物天然产物在自然界中扮演着重要角色,并为制药剂和疫苗提供了核心骨架。然而,这些分子的固有复杂性给其选择性功能化和衍生化带来了重大的合成挑战。自然界在一定程度上通过利用酶来解决这些问题,这些酶能够在手性口袋中定向和激活底物,从而显著提高有机转化的速率和选择性。本文展示了,在合成催化剂的情境下,类似的接近效应也可以被利用来实现复杂分子的一般性和可预测的位点选择性功能化。与酶不同,我们的催化剂采用单一的可逆共价键来识别和结合底物中的特定功能基团。通过结合这种独特的结合选择性和不对称催化,我们能够修饰单糖天然产品中较不活跃的轴向位置。复杂分子的操作为开发新的治疗药物和生物探针提供了途径。这里描述了一种催化剂,它在与底物形成共价键后,选择性地功能化邻近的功能基团。目标为顺-1,2-二醇,允许在未保护的赤道羟基存在下衍生化单糖的轴向羟基。
  • Regioselective Acetylation of Diols and Polyols by Acetate Catalysis: Mechanism and Application
    作者:Bo Ren、Martin Rahm、Xiaoling Zhang、Yixuan Zhou、Hai Dong
    DOI:10.1021/jo501343x
    日期:2014.9.5
    By this method, diols and polyols are regioselectively acetylated in high yields under mild conditions using catalytic amounts of acetate. In comparison to other methods involving reagents such as organotin, organoboron, organosilicon, organobase, and metal salts, this method is more environmentally friendly, convenient, and efficient and is also associated with higher regioselectivity. We have performed
    我们提出了在羟基的酰化中H键活化的原理,其中通过在羟基和阴离子之间形成键来活化酰化。在这一原理的指导下,我们证明了一种选择性糖化酰化糖的方法。通过这种方法,在温和的条件下,使用催化量的乙酸盐,可以高收率将二醇和多元醇区域选择性地乙酰化。与其他涉及试剂(例如有机锡,有机,有机,有机碱和属盐)的方法相比,该方法对环境更友好,更方便,更高效,并且还具有更高的区域选择性。我们已经进行了彻底的量子化学研究,以破译该机理,这表明乙酸首先与二醇形成双H键络合物,这使得随后可以在温和的条件下通过乙酸酐进行单酰化。区域选择性似乎源于二醇和多元醇的固有结构以及它们与配位乙酸催化剂的特定相互作用。
  • An inexpensive catalyst, Fe(acac)<sub>3</sub>, for regio/site-selective acylation of diols and carbohydrates containing a 1,2-<i>cis</i>-diol
    作者:Jian Lv、Jian-Tao Ge、Tao Luo、Hai Dong
    DOI:10.1039/c8gc00428e
    日期:——
    This work describes the [Fe(acac)3] (acac = acetylacetonate)-catalyzed, regio/site-selective acylation of 1,2- and 1,3-diols and glycosides containing a cis-vicinal diol. The iron(III) catalysts initially formed cyclic dioxolane-type intermediates with substrates between the iron(III) species and vicinal diols, and the efficient and selective acylation of one hydroxyl group was subsequently achieved
    这项工作描述了[Fe(acac)3 ](acac =乙酰丙酮酸)催化的1,2-和1,3-二醇和含有顺式邻位二醇的糖苷的区域/位点选择性酰化。(III)催化剂最初形成环状二氧戊环中间体,底物在(III)物种与邻位二醇之间,随后通过在二异丙基乙胺(DIPEA)存在下添加酰化试剂,实现一个羟基的有效和选择性酰化)在温和的条件下。该反应通常产生高选择性和高分离产率,并具有与二丁基介导的方案相同的保护模式。
  • DBN-Catalyzed Regioselective Acylation of Carbohydrates and Diols in Ethyl Acetate
    作者:Bo Ren、Mengyao Zhang、Shijie Xu、Lu Gan、Li Zhang、Lin Tang
    DOI:10.1002/ejoc.201900776
    日期:2019.8.7
    The 1,5‐diazabicyclo[4.3.0]non‐5‐ene (DBN)‐catalyzed, highly efficient and relatively green regioselective acylation of carbohydrates and diols is firstly developed. The hydroxyl groups can be selectively acylated by the corresponding anhydride in EtOAc in the presence of a catalytic amount (as low as 0.1 equiv.) of DBN at room temperature to 40 °C.
    碳水化合物和二醇的1,5-二氮杂双环[4.3.0] non-5-ene(DBN)催化,高效且相对绿色的区域选择性酰化反应是最先开发的。在室温至40°C下,在存在催化量(低至0.1当量)的DBN的情况下,可用相应的酸酐在EtOAc中将羟基选择性地酰化。
  • Diisopropylethylamine-triggered, highly efficient, self-catalyzed regioselective acylation of carbohydrates and diols
    作者:Bo Ren、Lu Gan、Li Zhang、Ningning Yan、Hai Dong
    DOI:10.1039/c8ob01464g
    日期:——
    diisopropylethylamine (DIPEA)-triggered, self-catalyzed, regioselective acylation of carbohydrates and diols is presented. The hydroxyl groups can be acylated by the corresponding anhydride in MeCN in the presence of a catalytic amount of DIPEA. This method is comparatively green and mild as it uses less organic base compared with other selective acylation methods. Mechanistic studies indicate that DIPEA reacts with
    提出了二异丙基乙胺(DIPEA)引发的碳水化合物和二醇的自催化区域选择性酰化反应。羟基可以在催化量的DIPEA存在下被MeCN中的相应酸酐酰化。与其他选择性酰化方法相比,该方法使用的有机碱较少,因此相对绿色且温和。机理研究表明,DIPEA与酸酐反应形成羧酸根离子,然后羧酸根离子可以通过双重氢键相互作用催化选择性酰化反应。
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