2-deoxy-3,4,6-tri-O-benzyl-α-D-lyxo-hexopyranosyl-(1→O)-N-tert-butoxycarbonyl-L-serine methyl ester | 1327260-07-0

• 分子结构分类: 有机化合物 - 有机酸及其衍生物 - 羧酸及其衍生物
• 英文名称: 2-deoxy-3,4,6-tri-O-benzyl-α-D-lyxo-hexopyranosyl-(1→O)-N-tert-butoxycarbonyl-L-serine methyl ester
• 英文别名: O-(2-deoxy-3,4,6-tri-O-benzyl-D-lyxo-hexapyranosyl)-N-(tert-butoxycarbonyl)-L-serine methyl ester；O-(2-deoxy-3,4,6-tri-O-benzyl-α-D-lyxo-hexopyranosyl)-N-(tert-butoxycarbonyl)-L-serine methyl ester；O-(3,4,6-tri-O-benzyl-2-deoxy-D-galactopyranosyl)-N-[(tert-butyloxycarbonyl)]-L-serine methyl ester；O-(2-deoxy-3,4,6-tri-O-benzyl-α-D-lyxo-hexapyranosyl)-N-(tert-butoxycarbonyl)-L-serine methyl ester；2-deoxy-3,4,6-tri-O-benzyl-α-D-lyxo-hexopyranosyl-(1->O)-N-tert-butoxycarbonyl-L-serine methyl ester；2-deoxy-3,4,6-tri-O-benzyl-α-D-galactopyranosyl-(1→O)-N-tert-butoxycarbonyl-L-serine methyl ester；methyl (2S)-3-[(2S,4R,5R,6R)-4,5-bis(phenylmethoxy)-6-(phenylmethoxymethyl)oxan-2-yl]oxy-2-[(2-methylpropan-2-yl)oxycarbonylamino]propanoate
• CAS: 1327260-07-0
• 化学式: C₃₆H₄₅NO₉
• 分子量: 635.755
• InChiKey: NBTAGTWIJNUJGX-AXJMTRDLSA-N

物化性质

• 沸点：
  735.0±60.0 °C(Predicted)
• 密度：
  1.20±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  5.1
• 重原子数：
  46
• 可旋转键数：
  18
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.44
• 拓扑面积：
  111
• 氢给体数：
  1
• 氢受体数：
  9

反应信息

• 作为产物：
  描述：

  Boc-L-丝氨酸甲酯 、 3,4,6-三邻苄基半乳醛 在 copper(I) trifluoromethanesulfonate benzene 作用下， 以 甲苯 为溶剂， 反应 2.0h， 以79%的产率得到2-deoxy-3,4,6-tri-O-benzyl-α-D-lyxo-hexopyranosyl-(1→O)-N-tert-butoxycarbonyl-L-serine methyl ester
  参考文献：
  名称：

  可以调整铜的反应性，以催化从乙二醇中立体合成2-脱氧糖苷。

  摘要：

  我们证明，通过选择氧化态和抗衡离子来调节Cu的反应性会导致“武装”和“解除武装”型糖类朝着直接糖基化的活化，从而导致以良好的优良收率合成脱氧糖苷的α-立体选择性合成。机理研究表明，CuI对于有效催化和立体控制至关重要，并且该反应通过烯醇醚和OH亲核试剂的双重活化而进行。

  DOI：

  10.1021/acs.orglett.9b04525

文献信息

• Gold(I)-Catalyzed Direct Stereoselective Synthesis of Deoxyglycosides from Glycals
  作者：Carlos Palo-Nieto、Abhijit Sau、M. Carmen Galan

  DOI：10.1021/jacs.7b08898

  日期：2017.10.11

  AgOTf enables the unprecedented direct and α-stereoselective catalytic synthesis of deoxyglycosides from glycals. Mechanistic investigations suggest that the reaction proceeds via Au(I)-catalyzed hydrofunctionalization of the enol ether glycoside. The room temperature reaction is high yielding and amenable to a wide range of glycal donors and OH nucleophiles.

  Au（I）与AgOTf结合使用可实现前所未有的直接和直接的α-立体选择性催化合成葡萄糖脱氧糖苷的作用。机理研究表明，该反应通过Au（I）催化的烯醇醚糖苷的加氢官能​​化而进行。室温反应是高产率的，并且适用于广泛的糖基供体和OH亲核试剂。
• Stereoselective organocatalyzed glycosylations – thiouracil, thioureas and monothiophthalimide act as Brønsted acid catalysts at low loadings
  作者：G. A. Bradshaw、A. C. Colgan、N. P. Allen、I. Pongener、M. B. Boland、Y. Ortin、E. M. McGarrigle

  DOI：10.1039/c8sc02788a

  日期：——

  Thiouracil catalyzes stereoselective glycosylations with galactals in loadings as low as 0.1 mol%.

  硫尿嘧啶在载体负载量低至0.1 mol％时，催化与半乳糖醛糖苷的立体选择性糖基化。
• Cooperative Brønsted Acid-Type Organocatalysis for the Stereoselective Synthesis of Deoxyglycosides
  作者：Carlos Palo-Nieto、Abhijit Sau、Ryan Williams、M. Carmen Galan

  DOI：10.1021/acs.joc.6b02498

  日期：2017.1.6

  α-stereoselective synthesis of deoxyglycosides using cooperative Brønsted acid-type organocatalysis has been developed. The method is tolerant of a wide range of glycoside donors and acceptors, and its versatility is exemplified in the one-pot synthesis of a trisaccharide. Mechanistic studies suggest that thiourea-induced acid amplification of the chiral acid via H-bonding is key for the enhancement

  已经开发了一种使用布朗斯台德酸型有机催化协同催化α-立体选择性合成脱氧糖苷的实用方法。该方法耐受多种糖苷供体和受体，并且其多功能性在三糖的一锅法合成中得到了例证。机理研究表明，硫脲通过氢键引起的手性酸的酸扩增是提高反应速率和产率的关键，而立体控制则取决于酸的手性。
• Stereoselective Synthesis of 2‐Deoxyglycosides from Glycals by Visible‐Light‐Induced Photoacid Catalysis
  作者：Gaoyuan Zhao、Ting Wang

  DOI：10.1002/anie.201800909

  日期：2018.5.22

  The direct, photoacid‐catalyzed synthesis of 2‐deoxyglycosides from glycals is reported. A series of phenol‐conjugated acridinium‐based organic photoacids were rationally designed, synthesized, and studied alongside the commercially available phenolic catalyst eosin Y. In the presence of such a photoacid catalyst and light, synthetic glycals were activated and coupled with a range of alcohols to afford

  据报道，由糖类直接，光酸催化合成了2-脱氧糖苷。与市售的酚催化剂曙红Y一起，合理设计，合成和研究了一系列基于酚共轭啶基的有机光酸。在这种光酸催化剂和光的存在下，合成糖被活化并与多种醇偶联以高收率和优异的α-选择性提供2-脱氧糖苷。
• Palladium‐Catalyzed Direct Stereoselective Synthesis of Deoxyglycosides from Glycals
  作者：Abhijit Sau、Ryan Williams、Carlos Palo‐Nieto、Antonio Franconetti、Sandra Medina、M. Carmen Galan

  DOI：10.1002/anie.201612071

  日期：2017.3.20

  in combination with a monodentate phosphine ligand enables the unprecedented direct and α‐stereoselective catalytic synthesis of deoxyglycosides from glycals. Initial mechanistic studies suggest that in the presence of N‐phenyl‐2‐(di‐tert‐butylphosphino)pyrrole as the ligand, the reaction proceeds via an alkoxy palladium intermediate that increases the proton acidity and oxygen nucleophilicity of the

  钯(II)与单齿膦配体相结合，能够以前所未有的方式直接和α-立体选择性催化从糖醛合成脱氧糖苷。初步机理研究表明，在N-苯基-2-(二叔丁基膦基)吡咯作为配体存在的情况下，反应通过烷氧基钯中间体进行，该中间体增加了醇的质子酸性和氧亲核性。该方法通过广泛的糖供体和受体进行了验证，包括带有烯烃官能团的底物。