β-Ionyliden-ethanol | 49817-16-5

• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 异戊烯醇脂质
• 英文名称: β-Ionyliden-ethanol
• 英文别名: (4E)-3-methyl-5-(2,6,6-trimethylcyclohexen-1-yl)penta-2,4-dien-1-ol
• CAS: 49817-16-5
• 化学式: C₁₅H₂₄O
• 分子量: 220.355
• InChiKey: VSMDCVLKAAVJFW-GQCAQHNKSA-N

物化性质

• 沸点：
  329.1±11.0 °C(Predicted)
• 密度：
  0.956±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  4.01
• 重原子数：
  16.0
• 可旋转键数：
  3.0
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.6
• 拓扑面积：
  20.23
• 氢给体数：
  1.0
• 氢受体数：
  1.0

反应信息

• 作为反应物：
  描述：

  β-Ionyliden-ethanol 在 四丙基高钌酸铵 、 N-甲基吗啉氧化物 作用下， 以 二氯甲烷 为溶剂， 生成 (2X,4E)-3-methyl-5-(2,6,6-trimethyl-cyclohex-1-enyl)-penta-2,4-dienal
  参考文献：
  名称：

  Synthesis of isotopically labeled all-trans retinals for DNP-enhanced solid-state NMR studies of retinylidene proteins

  摘要：

  已经合成了三种含有多个13C标记的全反式视黄醛，用于增强动态核极化固态魔角旋转核磁共振研究新型微生物视黄基膜蛋白，包括蛋白紫质和通道紫质。合成方法允许在环取代基和多烯链的不同位置上特异性地引入13C标记，以探测环取向和发色团在基态和光中间体中与蛋白质的相互作用等结构特征。[10-18-13C9]-全反式视黄醛（1b）、[12,15-13C2]-全反式视黄醛（1c）和[14,15-13C2]-全反式视黄醛（1d）分别从乙基2-氧环己烷羧酸酯（5）或β-紫罗兰酮（4）开始，经过12步、8步和7步线性合成得到。

  DOI：

  10.1002/jlcr.3576
• 作为产物：
  描述：

  (2X,4E)-3-methyl-5-(2,6,6-trimethyl-cyclohex-1-enyl)-penta-2,4-dienal 在 D-(-)-carbodine 、 二异丁基氢化铝 作用下， 以 甲苯 为溶剂， 反应 0.5h， 以60%的产率得到β-Ionyliden-ethanol
  参考文献：
  名称：

  Cyclofarnesoids and methylhexanoids produced from β-carotene in Phycomyces blakesleeanus

  摘要：

  The oxidative cleavage of beta-carotene in the Mucorales produces three fragments of 18, 15, and 7 carbons, respective heads of three families of apocarotenoids: the methylhexanoids, the trisporoids, and the cyclofarnesoids (named after their 1,6-cyclofarnesane skeleton). The apocarotenoids are easily recognized because they are absent in white mutants unable to produce beta-carotene. In cultures of Phycomyces blakesleeanus we detected thirty-two apocarotenoids by LC, UV absorbance, and MS. With additional IR and NMR we identified two methylhexanoids and the eight most abundant cyclofarnesoids. Four of them were previously-unknown natural compounds, including 4-dihydrocyclofarnesine S, the most abundant cyclofarnesoid in young cultures. We arranged the apocarotenoids of the Mucorales in a scheme that helps classifying and naming them and suggests possible metabolites and biosynthetic pathways. We propose specific biosynthetic pathways for cyclofarnesoids and methylhexanoids based on structural comparisons, the time course of appearance of individual compounds, and the bioconversion of beta-apo12-carotenol, an early precursor, to three more oxygenated cyclofarnesoids by the white mutants. Some of the reactions occur spontaneously in the increasingly acidic culture media. Mating increased the contents of methylhexanoids and cyclofarnesoids by ca. threefold in young cultures and ca. twelvefold in old ones (five days); cyclofarnesine S, the most abundant cyclofarnesoid in old cultures, increased over one hundredfold. We found no differences between the sexes and no activity as sexual pheromones, but we suggest that methylhexanoids and cyclofarnesoids could mediate species-specific physiology and behavior. 2016 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.phytochem.2016.01.013

文献信息

• Synthesis of isotopically labeled all-<i>trans</i> retinals for DNP-enhanced solid-state NMR studies of retinylidene proteins
  作者：Alexander J. Leeder、Lynda J. Brown、Johanna Becker-Baldus、Michaela Mehler、Clemens Glaubitz、Richard C.D. Brown

  DOI：10.1002/jlcr.3576

  日期：2018.11

  Three all-trans retinals containing multiple 13C labels have been synthesized to enable dynamic nuclear polarization enhanced solid-state magic angle spinning NMR studies of novel microbial retinylidene membrane proteins including proteorhodpsin and channelrhodopsin. The synthetic approaches allowed specific introduction of 13C labels in ring substituents and at different positions in the polyene chain to probe structural features such as ring orientation and interaction of the chromophore with the protein in the ground state and in photointermediates. [10-18-13C9]-All-trans-retinal (1b), [12,15-13C2]-all-trans-retinal (1c), and [14,15-13C2]-all-trans-retinal (1d) were synthesized in in 12, 8, and 7 linear steps from ethyl 2-oxocyclohexanecarboxylate (5) or β-ionone (4), respectively.

  已经合成了三种含有多个13C标记的全反式视黄醛，用于增强动态核极化固态魔角旋转核磁共振研究新型微生物视黄基膜蛋白，包括蛋白紫质和通道紫质。合成方法允许在环取代基和多烯链的不同位置上特异性地引入13C标记，以探测环取向和发色团在基态和光中间体中与蛋白质的相互作用等结构特征。[10-18-13C9]-全反式视黄醛（1b）、[12,15-13C2]-全反式视黄醛（1c）和[14,15-13C2]-全反式视黄醛（1d）分别从乙基2-氧环己烷羧酸酯（5）或β-紫罗兰酮（4）开始，经过12步、8步和7步线性合成得到。
• Machleidt,H.; Wessendorf,R., Justus Liebigs Annalen der Chemie, 1964, vol. 679, p. 20 - 26
  作者：Machleidt,H.、Wessendorf,R.

  DOI：——

  日期：——
• Andrewes; Liaaen-Jensen, Acta Chemica Scandinavica (1947), 1973, vol. 27, # 4, p. 1401 - 1409
  作者：Andrewes、Liaaen-Jensen

  DOI：——

  日期：——
• Cyclofarnesoids and methylhexanoids produced from β-carotene in Phycomyces blakesleeanus
  作者：Eugenio Alcalde、Humberto R. Medina、M. Mar Herrador、Alejandro F. Barrero、Enrique Cerdá-Olmedo

  DOI：10.1016/j.phytochem.2016.01.013

  日期：2016.4

  The oxidative cleavage of beta-carotene in the Mucorales produces three fragments of 18, 15, and 7 carbons, respective heads of three families of apocarotenoids: the methylhexanoids, the trisporoids, and the cyclofarnesoids (named after their 1,6-cyclofarnesane skeleton). The apocarotenoids are easily recognized because they are absent in white mutants unable to produce beta-carotene. In cultures of Phycomyces blakesleeanus we detected thirty-two apocarotenoids by LC, UV absorbance, and MS. With additional IR and NMR we identified two methylhexanoids and the eight most abundant cyclofarnesoids. Four of them were previously-unknown natural compounds, including 4-dihydrocyclofarnesine S, the most abundant cyclofarnesoid in young cultures. We arranged the apocarotenoids of the Mucorales in a scheme that helps classifying and naming them and suggests possible metabolites and biosynthetic pathways. We propose specific biosynthetic pathways for cyclofarnesoids and methylhexanoids based on structural comparisons, the time course of appearance of individual compounds, and the bioconversion of beta-apo12-carotenol, an early precursor, to three more oxygenated cyclofarnesoids by the white mutants. Some of the reactions occur spontaneously in the increasingly acidic culture media. Mating increased the contents of methylhexanoids and cyclofarnesoids by ca. threefold in young cultures and ca. twelvefold in old ones (five days); cyclofarnesine S, the most abundant cyclofarnesoid in old cultures, increased over one hundredfold. We found no differences between the sexes and no activity as sexual pheromones, but we suggest that methylhexanoids and cyclofarnesoids could mediate species-specific physiology and behavior. 2016 Elsevier Ltd. All rights reserved.