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2,3,4,6-四邻苄基-alpha-d-吡喃葡萄糖 | 4291-69-4

中文名称
2,3,4,6-四邻苄基-alpha-d-吡喃葡萄糖
中文别名
2,3,4,6-四苄基-D-吡喃半乳糖
英文名称
2,3,4,6-tetra-O-benzyl-α-D-galactopyranose
英文别名
2,3,4,6-tetra-O-benzyl-D-galactopyranose;2,3,4,6-tetra-O-benzyl-α-D-galactose;(2S,3R,4S,5S,6R)-3,4,5-tris(phenylmethoxy)-6-(phenylmethoxymethyl)oxan-2-ol
2,3,4,6-四邻苄基-alpha-d-吡喃葡萄糖化学式
CAS
4291-69-4
化学式
C34H36O6
mdl
——
分子量
540.656
InChiKey
OGOMAWHSXRDAKZ-YODGASFJSA-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:
    152 °C
  • 沸点:
    672.4±55.0 °C(Predicted)
  • 密度:
    1.22±0.1 g/cm3(Predicted)

计算性质

  • 辛醇/水分配系数(LogP):
    5
  • 重原子数:
    40
  • 可旋转键数:
    13
  • 环数:
    5.0
  • sp3杂化的碳原子比例:
    0.29
  • 拓扑面积:
    66.4
  • 氢给体数:
    1
  • 氢受体数:
    6

SDS

SDS:a4c2492d012b7f7e05410c360b763624
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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
    • 1
    • 2
  • 下游产品
    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:
    2,3,4,6-四邻苄基-alpha-d-吡喃葡萄糖六氯丙酮三苯基膦 作用下, 以 neat (no solvent) 为溶剂, 反应 0.75h, 以92%的产率得到(2R,3S,4S,5R,6R)-3,4,5-Tris-benzyloxy-2-benzyloxymethyl-6-chloro-tetrahydro-pyran
    参考文献:
    名称:
    基于三苯基膦/六氯丙酮体系的无溶剂合成糖基氯化物
    摘要:
    糖基氯化物在糖苷合成中用作糖基供体,在有机合成中用作前体,可以通过将糖半缩醛在70°C下暴露于PPh 3和六氯丙酮的等摩尔混合物中,轻松地在无溶剂条件下制备。该反应以高收率和短时间提供产物,并且耐受多种通常采用的保护基。
    DOI:
    10.1016/j.tetlet.2017.03.068
  • 作为产物:
    描述:
    参考文献:
    名称:
    Synthesis and Analysis of Substrate Analogues for UDP-Galactopyranose Mutase:  Implication for an Oxocarbenium Ion Intermediate in the Catalytic Mechanism
    摘要:
    UDP-D-galactofuranose ( 2), which is essential for both cell growth and virulence in many pathogenic microorganisms, is converted from UDP-D-galactopyranose (UDP-Galp, 1) by the flavin adenine dinucleotide (FAD)-dependent enzyme UDP-galactopyranose mutase (UGM). Here, we report the synthesis of UDP-GalOH ( 13) and show it as an inhibitor for UGM with a binding affinity similar to that of 1. These results are more consistent with a mechanism involving an oxocarbenium ion intermediate in UGM catalysis.
    DOI:
    10.1021/ol0631408
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文献信息

  • Fluorine-Directed β-Galactosylation: Chemical Glycosylation Development by Molecular Editing
    作者:Estelle Durantie、Christoph Bucher、Ryan Gilmour
    DOI:10.1002/chem.201200468
    日期:2012.6.25
    Validation of the 2‐fluoro substituent as an inert steering group to control chemical glycosylation is presented. A molecular editing study has revealed that the exceptional levels of diastereocontrol in glycosylation processes by using 2‐fluoro‐3,4,6‐tri‐O‐benzyl glucopyranosyl trichloroacetimidate (TCA) scaffolds are a consequence of the 2R,3S,4S stereotriad. This study has also revealed that epimerization
    提出了将2-氟取代基作为控制化学糖基化反应的惰性指导基团的验证方法。一项分子编辑研究表明,通过使用2-氟-3,4,6-三-O-苄基吡喃葡萄糖基三氯乙酰亚氨酸酯(TCA)支架,糖基化过程中非对映异构控制的异常水平是2 R,3 S,4的结果S立体三合会。这项研究还表明,C4的差向异构作用会导致β选择性大大提高(高达β/α300:1)。
  • Halide-mediated regioselective 6-O-glycosylation of unprotected hexopyranosides with perbenzylated glycosyl bromide donors
    作者:Dominika Alina Niedbal、Robert Madsen
    DOI:10.1016/j.tet.2015.11.059
    日期:2016.1
    couplings were completely selective for both glucose and galactose donors and acceptors as long as the stannylene acetal of the acceptor was soluble in dichloromethane. This gave rise to a number of 1,2-cis-linked disaccharides in reasonable yields. Mannose donors and acceptors, on the other hand, did not react in the glycosylation under these conditions.
    已经用二丁基氧化锡作为导向剂研究了在2,3,4,6-未保护的己吡喃糖苷中6-位的区域和立体选择性糖基化。使用全苄基化的六吡喃糖基溴化物作为供体,并且通过四丁基溴化铵促进糖基化。只要受体的亚锡乙缩醛可溶于二氯甲烷,偶联对于葡萄糖和半乳糖供体和受体都是完全选择性的。这以合理的产率产生了许多1,2-顺式连接的二糖。另一方面,在这些条件下,甘露糖供体和受体在糖基化中不反应。
  • Establishment of Guidelines for the Control of Glycosylation Reactions and Intermediates by Quantitative Assessment of Reactivity
    作者:Chun‐Wei Chang、Chia‐Hui Wu、Mei‐Huei Lin、Pin‐Hsuan Liao、Chun‐Chi Chang、Hsiao‐Han Chuang、Su‐Ching Lin、Sarah Lam、Ved Prakash Verma、Chao‐Ping Hsu、Cheng‐Chung Wang
    DOI:10.1002/anie.201906297
    日期:2019.11.18
    Stereocontrolled chemical glycosylation remains a major challenge despite vast efforts reported over many decades and so far still mainly relies on trial and error. Now it is shown that the relative reactivity value (RRV) of thioglycosides is an indicator for revealing stereoselectivities according to four types of acceptors. Mechanistic studies show that the reaction is dominated by two distinct intermediates:
    尽管数十年来进行了大量的努力,但立体控制的化学糖基化仍然是一个主要挑战,到目前为止,仍然主要依靠反复试验。现在表明,硫糖苷的相对反应性值(RRV)是根据四种受体揭示立体选择性的指标。机理研究表明,该反应由两种不同的中间体控制:糖基三氟甲磺酸酯和来自N-卤代琥珀酰亚胺(NXS)/ TfOH的糖基卤化物。糖基卤化物的形成与α-糖苷的产生高度相关。这些发现使得能够通过使用RRV作为α/β-选择性指示剂来预见糖基化反应,并且为立体控制糖基化开发了指导方针和规则。
  • Carbohydrate-derived iminium salt organocatalysts for the asymmetric epoxidation of alkenes
    作者:Philip C. Bulman Page、Yohan Chan、John Liddle、Mark R.J. Elsegood
    DOI:10.1016/j.tet.2014.07.052
    日期:2014.10
    A new family of carbohydrate-based dihydroisoquinolinium salts has been prepared and tested for potential as asymmetric catalysts for the epoxidation of unfunctionalized alkene substrates, providing up to 57% ee in the product epoxides.
    已经制备了新的基于碳水化合物的二氢异喹啉鎓盐家族,并测试了其作为非对称催化剂用于未官能化烯烃底物环氧化的潜力,在产物环氧化物中提供高达57%ee。
  • Enzyme-catalyzed synthesis of isosteric phosphono-analogues of sugar nucleotides
    作者:Stephen A. Beaton、Malcolm P. Huestis、Ali Sadeghi-Khomami、Neil R. Thomas、David L. Jakeman
    DOI:10.1039/b808078j
    日期:——
    Efficient enzymatic syntheses of isosteric phosphono analogues of sugar nucleotides have been accomplished using a thymidylyltransferase.
    利用胸苷酰基转移酶,已经成功实现了糖核苷酸等效磷酸类似物的酶促高效合成。
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