benzyl 2,3-O-isopropylidene-D-mannofuranoside | 869353-20-8

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: benzyl 2,3-O-isopropylidene-D-mannofuranoside
• 英文别名: (1R)-1-[(3aS,6R,6aS)-2,2-dimethyl-4-phenylmethoxy-3a,4,6,6a-tetrahydrofuro[3,4-d][1,3]dioxol-6-yl]ethane-1,2-diol
• CAS: 869353-20-8
• 化学式: C₁₆H₂₂O₆
• 分子量: 310.347
• InChiKey: NKCNUNUEQRYLNZ-BUWKTABGSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  0.5
• 重原子数：
  22
• 可旋转键数：
  5
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.62
• 拓扑面积：
  77.4
• 氢给体数：
  2
• 氢受体数：
  6

反应信息

• 作为反应物：
  描述：

  benzyl 2,3-O-isopropylidene-D-mannofuranoside 在 palladium 10% on activated carbon 、 氢气 、 sodium hydride 、 二正丁基氧化锡 、 三氟乙酸 作用下， 以 甲醇 、 水 、 N,N-二甲基甲酰胺 、 甲苯 为溶剂， 反应 25.17h， 生成 5-O-methyl-mannofuranoside
  参考文献：
  名称：

  Chemoenzymatic synthesis of C8-modified sialic acids and related α2–3- and α2–6-linked sialosides

  摘要：

  Naturally occurring 8-O-methylated sialic acids, including 8-O-methyl-N-acetylneuraminic acid and 8-O-methyl-N-glycolylneuraminic acid, along with 8-O-methyl-2-keto-3-deoxy-D-glycero-D-galactononulosonic acid (Kdn8Me) and 8-deoxy-Kdn were synthesized from corresponding 5-O-modified six-carbon monosaccharides and pyruvate using a sialic acid aldolase cloned from Pasteurella multocida strain P-1059 ( PmNanA). In addition, alpha 2-3- and alpha 2-6-linked sialyltrisaccharides containing Neu5Ac8Me and Kdn8Deoxy were also synthesized using a one-pot multienzyme approach. The strategy reported here provides an efficient approach to produce glycans containing various C8-modified sialic acids for biological evaluations. (C) 2011 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.bmcl.2011.04.083
• 作为产物：
  描述：

  D-甘露糖 在 盐酸 、 氢气 、 sodium hydride 作用下， 以 甲醇 、 水 、 N,N-二甲基甲酰胺 为溶剂， 生成 benzyl 2,3-O-isopropylidene-D-mannofuranoside
  参考文献：
  名称：

  AN EFFICIENT SYNTHESIS OF (2S,3R)- AND (2S,3S)-SPHINGOSINE

  摘要：

  一系列直接的反应使得D(+)-甘露糖和D(+)-核糖-1,4-内酯分别转化为“赤式”-(2S,3R)-和“苏式”-(2S,3S)-鞘氨醇。

  DOI：

  10.1246/cl.1985.1715

文献信息

• A mild and efficient method for chemoselective deprotection of acetonides by bismuth(III) trichloride
  作者：N.Raghavendra Swamy、Y Venkateswarlu

  DOI：10.1016/s0040-4039(02)01809-9

  日期：2002.10

  Acetonides undergo chemoselective deprotection to afford the corresponding 1,2-diols in excellent yields using bismuth trichloride in acetonitrile/dichloromethane at ambient temperature.

  在环境温度下，使用三氯化铋的乙腈/二氯甲烷溶液，对乙酰丙酮进行化学选择性脱保护，以优异的收率得到相应的1,2-二醇。
• Phosphomolybdic Acid Supported on Silica Gel: An Efficient, Mild and Reusable Catalyst for the Chemoselective Hydrolysis of Acetonides
  作者：J. S. Yadav、S. Raghavendra、M. Satyanarayana、E. Balanarsaiah

  DOI：10.1055/s-2005-872701

  日期：——

  Carbohydrate acetonides were chemoselectively cleaved to the corresponding diols by using environmentally benign phosphomolybdic acid (H3PMo12O40) supported on silica gel (PMA-SiO2) at ambient temperature in a short span of 5-7 minutes in acetonitrile. Acid-labile protective groups such as THP, TBS, TBDPS, MOM, OMe and PMB were found to be stable under the reaction conditions.

  碳水化合物乙缩醛在环境友好的负载型磷钼酸（H3PMa href=https://www.molaid.com/MS_187332 target="_blank">MO12O40/硅胶，简称PMA-SiO2）作用下，于室温、乙腈溶液中仅需5至7分钟即可选择性地裂解为相应的二醇。在这种反应条件下，如THP、TBS、TBDPS、MOM、OMe和PMB等对酸不稳定的保护基团均能保持稳定。
• Chemoselective hydrolysis of terminal isopropylidene acetals in acetonitrile using molecular iodine as a mild and efficient catalyst
  作者：J.S. Yadav、M. Satyanarayana、S. Raghavendra、E. Balanarsaiah

  DOI：10.1016/j.tetlet.2005.10.043

  日期：2005.12

  A simple, mild and efficient method for deprotection of acetonides in the presence of molecular iodine is described. Acid labile protecting groups such as PMB, OMe, OBn, allyl and propargyl are compatible with the reaction conditions, while TBS, TBDPS, TMS and THP ethers were unstable under the same conditions.

  描述了一种在分子碘存在下使丙酮化物脱保护的简单，温和和有效的方法。酸不稳定的保护基（如PMB，OMe，OBn，烯丙基和炔丙基）与反应条件兼容，而TBS，TBDPS，TMS和THP醚在相同条件下不稳定。
• Synthesis of Structurally Diverse Substituted Aziridinyl Glycoconjugates via Base-Mediated One-Pot Post-Ugi Cyclization
  作者：Rekha Sangwan、Atul Dubey、Gurudayal Prajapati、Ravi Sankar Ampapathi、Pintu Kumar Mandal

  DOI：10.1021/acs.orglett.9b00862

  日期：2019.4.19

  The base-promoted intramolecular cyclization of Ugi-azide adduct has been demonstrated for the synthesis of highly substituted aziridinyl glycoconjugates in one pot. The reactions are scalable and efficient and have an operationally simple broad substrate scope. To gain insight into the mechanism of aziridine formation, DFT and control experiments show that the cyclization of the aziridine glycoconjugate

  已证明，Ugi-叠氮化物加合物的碱促进的分子内环化反应可在一锅中合成高度取代的叠氮基糖基糖共轭物。反应是可扩展的和有效的，并且具有操作简单的广泛的底物范围。为了深入了解氮丙啶的形成机理，DFT和对照实验表明，氮丙啶糖缀合物途径的环化是优选的，因为它具有较低的活化能垒（0.57 kcal mol –1），这支持了我们的实验观察。