3-iodo-4-(tert-butyldimethylsilanyloxy)-5-methoxybenzaldehyde | 1201916-28-0

• 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: 3-iodo-4-(tert-butyldimethylsilanyloxy)-5-methoxybenzaldehyde
• 英文别名: 4-[(Tert-butyldimethylsilyl)oxy]-3-iodo-5-methoxybenzaldehyde；4-[tert-butyl(dimethyl)silyl]oxy-3-iodo-5-methoxybenzaldehyde
• CAS: 1201916-28-0
• 化学式: C₁₄H₂₁IO₃Si
• 分子量: 392.309
• InChiKey: QAGUEZTUVIBZBY-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.5
• 重原子数：
  19.0
• 可旋转键数：
  4.0
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.5
• 拓扑面积：
  35.53
• 氢给体数：
  0.0
• 氢受体数：
  3.0

反应信息

• 作为反应物：
  描述：

  3-iodo-4-(tert-butyldimethylsilanyloxy)-5-methoxybenzaldehyde 在 4-二甲氨基吡啶 、 四丁基氟化铵 、 potassium carbonate 、 间氯过氧苯甲酸 作用下， 以 四氢呋喃 、 甲醇 、 二氯甲烷 为溶剂， 反应 30.0h， 生成 [(1R,2R,6R,10S,11R,13S,15R,17R)-13-benzyl-6-hydroxy-4,17-dimethyl-5-oxo-15-(prop-1-en-2-yl)-12,14,18-trioxapentacyclo[11.4.1.0^{1,10}.0^{2,6}.0^{11,15}]octadeca-3,8-dien-8-yl]methyl (4-hydroxy-3-iodo-5-methoxyphenyl) carbonate
  参考文献：
  名称：

  The carbonate analogues of 5′-halogenated resiniferatoxin as TRPV1 ligands

  摘要：

  A series of carbonate analogues of 5'-halogenated RTX have been investigated in order to examine the effect of the carbonate group as a linker and the role of halogens in the reversal of activity from agonism to antagonism for rat and human TRPV1 heterologously expressed in Chinese hamster ovary cells. The carbonate analogues showed similar activities to the corresponding RTX derivatives in rat TRPV1 but lower potency in human TRPV1. 5-Halogenation converted the agonists to partial agonists or full antagonists and the extent of antagonism reflected the order of I > Br > Cl > F, with a somewhat greater extent of antagonism for the derivatives of the 4-amino RTX surrogates compared to the corresponding derivatives of RTX itself. The carbonate analogues of I-RTX: (60) and 5-bromo-4-amino-RTX (66) were potent and full antagonists with K-i(ant) = 2.23 and 2.46 nM, respectively, for rat TRPV1, which were ca. 5-fold more potent than I-RTX (2) under our conditions. The conformational analysis of the I-RTX-carbonate (60) indicated that its bent conformation was similar to that of I-RTX, consistent with compound 60 and I-RTX showing comparable potent antagonism. (C) 2013 Elsevier Masson SAS. All rights reserved.

  DOI：

  10.1016/j.ejmech.2013.07.042
• 作为产物：
  描述：

  5-碘香兰素 、 叔丁基二甲基氯硅烷 在 4-二甲氨基吡啶 、 三乙胺 作用下， 以 二氯甲烷 为溶剂， 反应 5.0h， 以80%的产率得到3-iodo-4-(tert-butyldimethylsilanyloxy)-5-methoxybenzaldehyde
  参考文献：
  名称：

  The carbonate analogues of 5′-halogenated resiniferatoxin as TRPV1 ligands

  摘要：

  A series of carbonate analogues of 5'-halogenated RTX have been investigated in order to examine the effect of the carbonate group as a linker and the role of halogens in the reversal of activity from agonism to antagonism for rat and human TRPV1 heterologously expressed in Chinese hamster ovary cells. The carbonate analogues showed similar activities to the corresponding RTX derivatives in rat TRPV1 but lower potency in human TRPV1. 5-Halogenation converted the agonists to partial agonists or full antagonists and the extent of antagonism reflected the order of I > Br > Cl > F, with a somewhat greater extent of antagonism for the derivatives of the 4-amino RTX surrogates compared to the corresponding derivatives of RTX itself. The carbonate analogues of I-RTX: (60) and 5-bromo-4-amino-RTX (66) were potent and full antagonists with K-i(ant) = 2.23 and 2.46 nM, respectively, for rat TRPV1, which were ca. 5-fold more potent than I-RTX (2) under our conditions. The conformational analysis of the I-RTX-carbonate (60) indicated that its bent conformation was similar to that of I-RTX, consistent with compound 60 and I-RTX showing comparable potent antagonism. (C) 2013 Elsevier Masson SAS. All rights reserved.

  DOI：

  10.1016/j.ejmech.2013.07.042

文献信息

• Synthesis and antioxidant properties of dendritic polyphenols
  作者：Choon Young Lee、Ajit Sharma、Jae Eun Cheong、Julie L. Nelson

  DOI：10.1016/j.bmcl.2009.09.088

  日期：2009.11

  Three dendritic polyphenols (generation 1) were synthesized: a syringaldehyde-based dendrimer (1), a vanillin-based dendrimer (2), and an iodinated vanillin-based dendrimer (3). They all showed strong antioxidant activity according to the 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical assay. The syringaldehyde dendrimer was twice and 10 times stronger than quercetin and Trolox, respectively. The vanillin-based dendrimer and its more hydrophobic iodinated derivative were also more potent antioxidants than quercetin and Trolox. The DPPH order of potency was 1 > 2, 3 > quercetin > Trolox. All three dendrimers also protected human LDL from free radical attack in a dose-dependent manner. Their order of free radical scavenging was 1 > 3 > 2 > quercetin > Trolox. The increased hydrophobic nature of the iodinated derivative may have contributed to its better LDL protection than 2. Protection of linoleic acid oxidation was studied by the beta-carotene-linoleate assay. Dendrimer 1 was clearly superior to the other antioxidants in protecting the fatty acid. In case of DNA protection against free radical damage, the order of activity was 1 > quercetin > 2 > 3, Trolox. Pro-oxidant effect on copper-induced DNA oxidation showed the following order: quercetin, Trolox > 1 > 2 > 3. Results of the study show that dendritic antioxidants, even at the generation 1 level, provide promising antioxidant properties for their potential use as drug candidates for diseases associated with oxidative stress. (C) 2009 Elsevier Ltd. All rights reserved.