equatorial-(7-methoxycoumarin-4-yl)methyl adenosine cyclic 3',5'-monophosphate

• 分子结构分类: 有机化合物 - 核苷、核苷酸和类似物 - 嘌呤核苷酸
• 英文名称: equatorial-(7-methoxycoumarin-4-yl)methyl adenosine cyclic 3',5'-monophosphate
• 英文别名: (7-methoxycoumarin-4-yl)methyl adenosine cyclic-3',5'-monophosphate；4-[[(2R,4aR,6R,7R,7aS)-6-(6-aminopurin-9-yl)-7-hydroxy-2-oxo-4a,6,7,7a-tetrahydro-4H-furo[3,2-d][1,3,2]dioxaphosphinin-2-yl]oxymethyl]-7-methoxychromen-2-one
• 化学式: C₂₁H₂₀N₅O₉P
• 分子量: 517.392
• InChiKey: ABJRXMINLQZBMM-ATDUASFFSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -1
• 重原子数：
  36
• 可旋转键数：
  5
• 环数：
  6.0
• sp3杂化的碳原子比例：
  0.33
• 拓扑面积：
  179
• 氢给体数：
  2
• 氢受体数：
  13

反应信息

• 作为反应物：
  描述：

  equatorial-(7-methoxycoumarin-4-yl)methyl adenosine cyclic 3',5'-monophosphate 以 甲醇 、 水 为溶剂， 生成 4-(hydroxymethyl)-7-methoxycoumarin 、 腺苷环磷酸酯
  参考文献：
  名称：

  （香豆素-4-基）甲基衍生物的失活行为和激发态性质。2.具有荧光增强作用的所选（香豆素-4-基）甲基笼罩的腺苷环3'，5'-单磷酸的光裂解。

  摘要：

  （香豆素-4-基）甲基笼罩的腺苷环3'，5'-单磷酸酯（cAMPs）1-6的一系列轴向和赤道非对映异构体，在6-和/或-中具有甲氧基，二烷基氨基或无取代基已经合成了7位和它们相应的4-（羟甲基）香豆素光产物7-12。在甲醇/ HEPES缓冲溶液中检测了1-6和7-12的光化学和UV / vis光谱特性（吸收和荧光）。供体在6-位的取代引起长波长吸收带的强烈的红移，而在7-位的取代仅导致弱的红移。笼养的cAMPs的光化学裂解进行了调查，并分析了光产物。光化学量子产率，荧光量子产率，确定了激发单重态的寿命。使用中间形成的香豆基甲基阳离子的电子稳定作用，在香豆素部分的7位具有供体取代基的笼状cAMP中，获得了最高的光化学量子产率值（光S（N）1机理）。用6-位供体取代时，香豆素甲基阳离子的适度电子稳定作用被强的红移引起过度补偿，从而减小了激发态S（1）与相应香豆素甲基阳离子之间的能隙。cAMP的

  DOI：

  10.1021/jo010692p
• 作为产物：
  描述：

  4-溴甲基-7-甲氧基香豆素 、 (4aR,6R,7R,7aS)-6-(6-aminopurin-9-yl)-2-oxido-2-oxo-4a,6,7,7a-tetrahydro-4H-furo[3,2-d][1,3,2]dioxaphosphinin-7-ol;tetrabutylazanium 以 乙腈 为溶剂， 反应 5.0h， 生成 equatorial-(7-methoxycoumarin-4-yl)methyl adenosine cyclic 3',5'-monophosphate 、 axial-(7-methoxycoumarin-4-yl)methyl adenosine cyclic 3',5'-monophosphate
  参考文献：
  名称：

  Deactivation Behavior and Excited-State Properties of (Coumarin-4-yl)methyl Derivatives. 1. Photocleavage of (7-Methoxycoumarin-4-yl)methyl-Caged Acids with Fluorescence Enhancement

  摘要：

  The photochemistry of the (7-methoxycoumarin-4-yl)methyl (MCM) carboxylates 3a-d, the mesylate 4, and the phosphates 5a-e has been examined under near physiological conditions in acetonitrile or methanol/aqueous HEPES buffer solution, respectively Analysis of photoproducts as well as measurements of photochemical quantum yields, fluorescence quantum yields, and lifetimes for the excited singlet state verified the similar photochemical and photophysical behavior of all the esters studied here. 4-(Hydroxymethyl)-7-methoxycoumarin (2) and the corresponding free acids were obtained as major products upon irradiation. The rates of deactivation of the excited MCM derivatives 3a-5e were found to be dependent on the:leaving group ability of the anion concerned as well as on the solvent polarity. The polarity dependence and the exclusive formation of O-18-labeled 2 during irradiation of 5a in O-18-labeled water indicate that photocleavage of the excited singlet state of the MCM caged compounds 3a-5e proceeds via a photo S(N)1 mechanism (solvent-assisted photoheterolysis).

  DOI：

  10.1021/jo9910233

文献信息

• Deactivation Behavior and Excited-State Properties of (Coumarin-4-yl)methyl Derivatives. 2. Photocleavage of Selected (Coumarin-4-yl)methyl-Caged Adenosine Cyclic 3‘,5‘-Monophosphates with Fluorescence Enhancement
  作者：Torsten Eckardt、Volker Hagen、Björn Schade、Reinhardt Schmidt、Claude Schweitzer、Jürgen Bendig

  DOI：10.1021/jo010692p

  日期：2002.2.1

  UV/vis spectroscopical properties (absorption and fluorescence) of 1-6 and 7-12 have been examined in methanol/aqueous HEPES buffer solution. Donor substitution in the 6-position causes a strong bathochromic shift of the long-wavelength absorption band, whereas substitution in the 7-position leads only to a weak red shift. The photochemical cleavage of the caged cAMPs was investigated, and the photoproducts

  （香豆素-4-基）甲基笼罩的腺苷环3'，5'-单磷酸酯（cAMPs）1-6的一系列轴向和赤道非对映异构体，在6-和/或-中具有甲氧基，二烷基氨基或无取代基已经合成了7位和它们相应的4-（羟甲基）香豆素光产物7-12。在甲醇/ HEPES缓冲溶液中检测了1-6和7-12的光化学和UV / vis光谱特性（吸收和荧光）。供体在6-位的取代引起长波长吸收带的强烈的红移，而在7-位的取代仅导致弱的红移。笼养的cAMPs的光化学裂解进行了调查，并分析了光产物。光化学量子产率，荧光量子产率，确定了激发单重态的寿命。使用中间形成的香豆基甲基阳离子的电子稳定作用，在香豆素部分的7位具有供体取代基的笼状cAMP中，获得了最高的光化学量子产率值（光S（N）1机理）。用6-位供体取代时，香豆素甲基阳离子的适度电子稳定作用被强的红移引起过度补偿，从而减小了激发态S（1）与相应香豆素甲基阳离子之间的能隙。cAMP的
• Deactivation Behavior and Excited-State Properties of (Coumarin-4-yl)methyl Derivatives. 1. Photocleavage of (7-Methoxycoumarin-4-yl)methyl-Caged Acids with Fluorescence Enhancement
  作者：Björn Schade、Volker Hagen、Reinhard Schmidt、Ralph Herbrich、Eberhard Krause、Torsten Eckardt、Jürgen Bendig

  DOI：10.1021/jo9910233

  日期：1999.12.1

  The photochemistry of the (7-methoxycoumarin-4-yl)methyl (MCM) carboxylates 3a-d, the mesylate 4, and the phosphates 5a-e has been examined under near physiological conditions in acetonitrile or methanol/aqueous HEPES buffer solution, respectively Analysis of photoproducts as well as measurements of photochemical quantum yields, fluorescence quantum yields, and lifetimes for the excited singlet state verified the similar photochemical and photophysical behavior of all the esters studied here. 4-(Hydroxymethyl)-7-methoxycoumarin (2) and the corresponding free acids were obtained as major products upon irradiation. The rates of deactivation of the excited MCM derivatives 3a-5e were found to be dependent on the:leaving group ability of the anion concerned as well as on the solvent polarity. The polarity dependence and the exclusive formation of O-18-labeled 2 during irradiation of 5a in O-18-labeled water indicate that photocleavage of the excited singlet state of the MCM caged compounds 3a-5e proceeds via a photo S(N)1 mechanism (solvent-assisted photoheterolysis).