6-O-allyl-1-O-(p-methoxybenzyl)-2,3:4,5-di-O-cyclohexylidene-myo-inositol | 211869-78-2

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: 6-O-allyl-1-O-(p-methoxybenzyl)-2,3:4,5-di-O-cyclohexylidene-myo-inositol
• CAS: 211869-78-2
• 化学式: C₂₉H₄₀O₇
• 分子量: 500.632
• InChiKey: HYJBLNMZLYFTNB-DSKHAUODSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.6
• 重原子数：
  36
• 可旋转键数：
  7
• 环数：
  6.0
• sp3杂化的碳原子比例：
  0.72
• 拓扑面积：
  64.6
• 氢给体数：
  0
• 氢受体数：
  7

反应信息

• 作为反应物：
  描述：

  6-O-allyl-1-O-(p-methoxybenzyl)-2,3:4,5-di-O-cyclohexylidene-myo-inositol 在 sodium hydride 、 二正丁基氧化锡 、 乙酰氯 作用下， 以 甲醇 、 二氯甲烷 、 N,N-二甲基甲酰胺 、 甲苯 为溶剂， 反应 24.67h， 生成 1-D-6-O-allyl-3,4,5-tri-O-benzyl-1-O-(4-methoxybenzyl)-myo-inositol
  参考文献：
  名称：

  GPI锚定肽的首次全合成。

  摘要：

  通过收敛合成制备了GPI锚定的精子CD52抗原二肽。首先，分别合成具有C末端游离的二肽和具有游离氨基的非还原性末端磷酸乙醇胺的GPI。然后，使用EDC / HOBt作为缩合试剂，将这两个构件结合在一起。最后，将GPI锚定的肽脱保护，得到目标分子1。

  DOI：

  10.1021/jo034213t
• 作为产物：
  描述：

  (+/-)-1,2:5,6-dicyclohexylidene-myo-inositol 在 porcine pancreatic lipase 、 potassium phosphate buffer 、 sodium methylate 、 sodium hydride 、 二正丁基氧化锡 作用下， 以 甲醇 、 乙醚 、 正己烷 、 N,N-二甲基甲酰胺 、 甲苯 为溶剂， 反应 71.0h， 生成 6-O-allyl-1-O-(p-methoxybenzyl)-2,3:4,5-di-O-cyclohexylidene-myo-inositol
  参考文献：
  名称：

  GPI锚定肽的首次全合成。

  摘要：

  通过收敛合成制备了GPI锚定的精子CD52抗原二肽。首先，分别合成具有C末端游离的二肽和具有游离氨基的非还原性末端磷酸乙醇胺的GPI。然后，使用EDC / HOBt作为缩合试剂，将这两个构件结合在一起。最后，将GPI锚定的肽脱保护，得到目标分子1。

  DOI：

  10.1021/jo034213t

文献信息

• Synthesis of the Fully Phosphorylated GPI Anchor Pseudohexasaccharide of <i>Toxoplasma </i><i>g</i><i>ondii</i>
  作者：Klaus Pekari、Denis Tailler、Ralf Weingart、Richard R. Schmidt

  DOI：10.1021/jo015840q

  日期：2001.11.1

  stereoselectivity and good yields in the glycosylation reactions, anchimeric assistance was employed. To enable regioselective attachment of the two different phosphorus esters, the 6f-O-silyl group of 32 was first removed and the aminoethyl phosphate residue was attached. Then the MPM group was oxidatively removed, and the second phosphate residue was introduced. Unprotected 1a was then liberated in two steps:

  完全磷酸化的糖基磷脂酰肌醇（GPI）锚定假六糖1a的逆合成导致了结构单元2-6，其中5和6是已知的。假二糖结构单元2的形成基于容易获得的结构单元7，该结构单元7通过衍生物11及其与已知供体12的糖基化作用，获得了所需的化合物2。结构单元3，允许所需的所有羟基进入，由甘露糖分五个步骤制备。从容易获得的前体中获得结构单元4，该结构单元4与3反应生成二糖23。决定性假六糖中间体32的合成基于23与5，然后与6，最后与2的反应。由于在糖基化反应中具有高的立体选择性和良好的收率，因此使用了嵌合助剂。为了使两种不同的磷酸酯区域选择性地连接，首先除去32的6f-O-甲硅烷基，并连接磷酸氨基乙基残基。然后，氧化除去MPM基团，并引入第二磷酸盐残基。然后分两步释放未保护的1a：用甲醇钠处理除去了乙酰基保护基团，最后，催化氢化得到了所需的目标分子，该分子可以在结构上完全分配。
• Convergent synthesis of an inner core GPI of sperm CD52
  作者：Jie Xue、Zhongwu Guo

  DOI：10.1016/s0960-894x(02)00301-3

  日期：2002.8

  An inner core of the GPI anchor of sperm CD52 antigens was synthesized by a highly convergent process using specially modified inositol, glucosamine and phospholipid as key building blocks. This paper also presents a new and efficient procedure to prepare 1,2,6-differentiated derivatives of inositol for GPI syntheses. (C) 2002 Elsevier Science Ltd. All rights reserved.
• Molecular Recognition at the Phosphatidylinositol 3,4,5-Trisphosphate-Binding Site. Studies Using the Permuted Isomers of Phosphatidylinositol Trisphosphate
  作者：Da-Sheng Wang、Ao-Lin Hsu、Xueqin Song、Chi-Ming Chiou、Ching-Shih Chen

  DOI：10.1021/jo980356h

  日期：1998.8.1

  Permuted isomers of L-alpha-phosphatidyl-D-myo-inositol trisphosphate (PtdInsP(3)), including PtdIns(3,4,5)P-3, PtdIns(3,4,6)P-3, PtdIns(3,5,6)P-3, and PtdIns(4,5,6)P-3, have been synthesized as part of our effort to understand the underlying principles governing ligand selection for Ptdlns(3,4,5)P-3-specific binding proteins. These PtdInsP(3) isomers are examined by using two PtdIns(3,4,5)P-3-dependent functional assays: binding to the C-terminal SH2 domain of the p85 regulatory subunit of PI 3-kinase and platelet aggregation. Our data show that all these isomers bind to the SH2 domain with comparable affinity despite variation in the regioisomeric distribution of phosphate functions. Moreover, all these phospholipids are capable of triggering platelet aggregation with the relative potency of PtdIns(3,4,5)P-3 > PtdIns(3,5,6)P-3 > PtdIns(4,5,6)P-3 > PtdIns(3,4,6)P-3. Evidence suggests that these PtdInsP(3)'s facilitate cell aggregation by activating Ca2+ influx across the plasma membrane. In contrast, other inositol lipids examined including PtdIns(3,4)P-2, PtdIns(4,5)P-2, PtdIns(3)P, and PtdIns(4)P are ineffective in eliciting the aggregation even at much higher concentrations. Taken together, the present data suggest that the charge density on the phosphorylated inositol ring represents a key factor in determining the phosphoinositide binding specificity of target proteins. It is conceivable that the interaction with the PtdIns(3,4,5)P-3-binding motif requires the participation of all three phosphates on the headgroup of PtdIns(3,4,5)P-3. Consequently, other membrane phosphoinositides (e.g., the bis- and monophosphates) become thermodynamically unfavorable for the binding to these PtdIns(3,4,5)P-3 targets.
• First Total Synthesis of a GPI-Anchored Peptide
  作者：Jie Xue、Ning Shao、Zhongwu Guo

  DOI：10.1021/jo034213t

  日期：2003.5.1

  A GPI-anchored dipeptide of sperm CD52 antigen was prepared through a convergent synthesis. First, the dipeptide with its C-terminus free and the GPI with its nonreducing end phosphoethanolamine bearing a free amino group were synthesized separately. Then, the two building blocks were coupled with use of EDC/HOBt as the condensation reagent. Finally, the GPI-anchored peptide was deprotected to give

  通过收敛合成制备了GPI锚定的精子CD52抗原二肽。首先，分别合成具有C末端游离的二肽和具有游离氨基的非还原性末端磷酸乙醇胺的GPI。然后，使用EDC / HOBt作为缩合试剂，将这两个构件结合在一起。最后，将GPI锚定的肽脱保护，得到目标分子1。