3,4-di-O-acetyl-1,2-O-<1-(endo-cyano)ethylidene>-α-D-xylopyranose | 85326-15-4

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 呋喃类
• 英文名称: 3,4-di-O-acetyl-1,2-O-<1-(endo-cyano)ethylidene>-α-D-xylopyranose
• 英文别名: 3,4-di-O-acetyl-1,2-O-[(1-endo-cyano)ethylidene]-α-D-xylopyranose；1,2-O-<(R)-1-cyanoethylidene>-α-D-xylopyranose；3,4-di-O-acetyl-1,2-O-[1-(endo-cyano)ethylidene]-α-D-xylopyranose；[(2R,3aR,6R,7S,7aR)-7-acetyloxy-2-cyano-2-methyl-5,6,7,7a-tetrahydro-3aH-[1,3]dioxolo[4,5-b]pyran-6-yl] acetate
• CAS: 85326-15-4
• 化学式: C₁₂H₁₅NO₇
• 分子量: 285.254
• InChiKey: CTMNJXPYBBDATC-IYKVGLELSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -0.4
• 重原子数：
  20
• 可旋转键数：
  4
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.75
• 拓扑面积：
  104
• 氢给体数：
  0
• 氢受体数：
  8

反应信息

• 作为反应物：
  描述：

  3,4-di-O-acetyl-1,2-O-<1-(endo-cyano)ethylidene>-α-D-xylopyranose 、 1,2:3,4-di-O-isopropylidene-6-O-trityl-α-D-galactopyranose 在 降钙素杂质10 、 trityl tetrafluoroborate 作用下， 以 二氯甲烷 为溶剂， 反应 1.0h， 以60%的产率得到1,2:3,4-di-O-isopropylidene-6-O-(2,3,4-tri-O-acetyl-β-D-xylopyranosyl)-α-D-galactopyranose
  参考文献：
  名称：

  乙酰化的外和​​内氰基亚乙基衍生物在糖基化反应中的不同反应性

  摘要：

  摘要具有d-葡萄糖，d-木糖和d-半乳糖构型（2-6）与伯（8）和仲（9）三苯甲基衍生物的乙酰化1-（内氰基）亚乙基衍生物的缩合反应较多。比相应的exo-异构体快。反应性的差异是根据构象差异来解释的。

  DOI：

  10.1016/0008-6215(89)85016-5
• 作为产物：
  描述：

  三甲基氰硅烷 、 Acetic acid (2S,3R,4S,5R)-4,5-diacetoxy-2-(5,5-dimethyl-2-oxo-2λ⁵-[1,3,2]dioxaphosphinan-2-ylsulfanyl)-tetrahydro-pyran-3-yl ester 在 4 A molecular sieve 、 三氟化硼乙醚 作用下， 以 二氯甲烷 为溶剂， 反应 0.17h， 以65%的产率得到3,4-di-O-acetyl-1,2-O-<1-(exo-cyano)ethylidene>-α-D-xylopyranose
  参考文献：
  名称：

  The cyanation reaction of O-acetylated S-glycosyl phosphorothioates

  摘要：

  The reaction of alpha- and beta -1-S-phosphorothioates of per-O-acetylated monosaccharides (galactose, xylose, glucose) with trimethylsilyl cyanide in the presence of boron trifluoride etherate has been investigated. It has been established that in dichloromethane 1,2-O-cyanoethylidene derivatives of aldoses are formed in high yields. When the reaction was carried out in acetonitrile, peracetylated galactosyl cyanide was formed as the major product. (C) 2000 Elsevier Science Ltd. All rights reserved.

  DOI：

  10.1016/s0008-6215(00)00216-0

文献信息

• The effect of replacing a 3-O-acetyl group by a 3-O-benzyl group in a methyl 4-O-trityl-β-d-xylopyranoside derivative on the efficiency of 1,2-trans-glycosylation with a d-xylose 1,2-O-(1-cyanoethylidene) derivative
  作者：Nikolay E. Nifant'ev、Leon V. Backinowsky、Nikolay K. Kochetkov

  DOI：10.1016/0008-6215(89)85042-6

  日期：1989.8

  Abstract Replacement of AcO-3 in methyl 2,3-di- O -acetyl-4- O -trityl-β- d -xylopyranoside with a benzyl group greatly increases the 1,2- trans -stereoselectivity of glycosylation with a d -xylopyranose 1,2- O -(1-cyanoethylidene) derivative. Anomerisation of methyl 2- O -benzyl-β- d -xylopyranoside derivatives occurred under the action of triphenylmethylium perchlorate.

  摘要用苄基取代2，3-二-O-乙酰基-4-O-三苯甲基-β-d-吡喃吡喃糖苷中的AcO-3大大提高了ad-吡喃吡喃糖1糖基化反应的1,2-反式-立体选择性。 ，2-O-（1-氰基亚乙基）衍生物。在高氯酸三苯基甲酯的作用下，甲基2-O-苄基-β-d-吡喃吡喃糖苷衍生物发生了异构化。
• Glycosylation of methyl-2,3-di-O-acetyl-?-D-xylopyranoside triarylmethyl ethers with electron-donor substituents in the aromatic ring by 3,4-di-O-acetyl-1,2-O-[1-(endo-cyano)-ethylidene]-?-D-xylo-pyranose
  作者：N. E. Nifant'ev、L. V. Bakinovskii、Yu. E. Tsvetkov、N. K. Kochetkov

  DOI：10.1007/bf00962335

  日期：1987.4
• Reactivity of 1,2-O-cyanoalkylidene sugar derivatives in trityl-cyanoalkylidene condensation
  作者：P. I. Kitov、Yu. E. Tsvetkov、L. V. Backinowsky、N. K. Kochetkov

  DOI：10.1007/bf00699947

  日期：1993.8

  The rate-determining step of trityl-cyanoalkylidene condensation is the interaction between the cyanoalkylidene derivative (CD) and the triphenylmethyl cation. The rate of the reaction follows first-order kinetics with respect to both CD and the catalyst (Tr+) and is independent of the nature and concentration of the trityl ether. Glycosylation rate constants have been determined for CD's of most common monosaccharides.
• NIFANIEV, NIKOLAY E.;BACKINOWSKY, LEON V.;KOCHETKOV, NIKOLAY K., CARBOHYDR. RES., 191,(1989) N, C. 13-19
  作者：NIFANIEV, NIKOLAY E.、BACKINOWSKY, LEON V.、KOCHETKOV, NIKOLAY K.

  DOI：——

  日期：——
• VICENT, CRISTINA;COTERON, JOSE-MIGUEL;JIMENEZ-BARBERO, JESUS;MARTIN-LOMAS+, CARBOHYDR. RES., 194,(1989) C. 163-169
  作者：VICENT, CRISTINA、COTERON, JOSE-MIGUEL、JIMENEZ-BARBERO, JESUS、MARTIN-LOMAS+

  DOI：——

  日期：——