(2E,4E)-5-(4-benzyloxy-3-methoxy-phenyl)-penta-2,4-dienoic acid ethyl ester | 178610-96-3

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯酚醚
• 英文名称: (2E,4E)-5-(4-benzyloxy-3-methoxy-phenyl)-penta-2,4-dienoic acid ethyl ester
• 英文别名: ethyl (E,E)-5-(4-benzyloxy-3-methoxyphenyl)-2,4-pentadienoate；ethyl (2E,4E)-5-(3-methoxy-4-phenylmethoxyphenyl)penta-2,4-dienoate
• CAS: 178610-96-3
• 化学式: C₂₁H₂₂O₄
• 分子量: 338.403
• InChiKey: QTOUFRKAWPISSR-BRVZEXMBSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.4
• 重原子数：
  25
• 可旋转键数：
  9
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.19
• 拓扑面积：
  44.8
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  (2E,4E)-5-(4-benzyloxy-3-methoxy-phenyl)-penta-2,4-dienoic acid ethyl ester 在 氢氧化钾 作用下， 以 甲醇 为溶剂， 反应 6.0h， 以4.8 g的产率得到5-<4-(benzyloxy)-3-methoxyphenyl>-2,4-pentadienoic acid
  参考文献：
  名称：

  Structure–activity relationship of piperine and its synthetic analogues for their inhibitory potentials of rat hepatic microsomal constitutive and inducible cytochrome P450 activities

  摘要：

  Inhibitors of drug metabolism have important implications in pharmaco-toxicology and agriculture. We have reported earlier that piperine, a major alkaloid of black and long peppers inhibits both constitutive and inducible cytochrome P450 (CYP)dependent drug metabolising enzymes. In the present study, an attempt has been made to prepare several novel synthetic analogues so as to relate various modifications in the parent molecule to the inhibition of CYP activities. Two types of mono-oxygenase reactions arylhydrocarbon hydroxylase (AHH) and 7-methoxycoumarin-O-demethylase (MOCD) have been studied. Inhibition studies were investigated in rat microsomal fraction prepared from untreated, 3MC- and PB- treated rat liver in vitro. Modifications were introduced into the piperine molecule: (i) in the phenyl nucleus, (ii) in the side chain and (iii) in the basic moiety. Thus, 38 compounds have been subjected to such studies, and simultaneously an attempt has also been made to arrive at the structure-activity relationship of synthetic analogues. In general, most of the inhibitory potential of the parent molecule is lost with modification in either of the three components of piperine. Saturation of the side chain resulted in significantly enhanced inhibition of CYP while modifications in the phenyl and basic moieties in few analogues offered maximal selectivity in inhibiting either constitutive or inducible CYP activities. Thus Few novel analogues as CYP inactivators have been synthesized which may have important consequences in pharmacokinetics and bioavailability of drugs. (C) 2000 Elsevier Science Ltd. All rights reserved.

  DOI：

  10.1016/s0968-0896(99)00273-4
• 作为产物：
  描述：

  4-苄氧基-3-甲氧基苯甲醛 在 sodium hydride 、 三氯氧磷 作用下， 以 乙二醇二甲醚 、 乙醚 为溶剂， 反应 5.0h， 生成 (2E,4E)-5-(4-benzyloxy-3-methoxy-phenyl)-penta-2,4-dienoic acid ethyl ester
  参考文献：
  名称：

  Structure–activity relationship of piperine and its synthetic analogues for their inhibitory potentials of rat hepatic microsomal constitutive and inducible cytochrome P450 activities

  摘要：

  Inhibitors of drug metabolism have important implications in pharmaco-toxicology and agriculture. We have reported earlier that piperine, a major alkaloid of black and long peppers inhibits both constitutive and inducible cytochrome P450 (CYP)dependent drug metabolising enzymes. In the present study, an attempt has been made to prepare several novel synthetic analogues so as to relate various modifications in the parent molecule to the inhibition of CYP activities. Two types of mono-oxygenase reactions arylhydrocarbon hydroxylase (AHH) and 7-methoxycoumarin-O-demethylase (MOCD) have been studied. Inhibition studies were investigated in rat microsomal fraction prepared from untreated, 3MC- and PB- treated rat liver in vitro. Modifications were introduced into the piperine molecule: (i) in the phenyl nucleus, (ii) in the side chain and (iii) in the basic moiety. Thus, 38 compounds have been subjected to such studies, and simultaneously an attempt has also been made to arrive at the structure-activity relationship of synthetic analogues. In general, most of the inhibitory potential of the parent molecule is lost with modification in either of the three components of piperine. Saturation of the side chain resulted in significantly enhanced inhibition of CYP while modifications in the phenyl and basic moieties in few analogues offered maximal selectivity in inhibiting either constitutive or inducible CYP activities. Thus Few novel analogues as CYP inactivators have been synthesized which may have important consequences in pharmacokinetics and bioavailability of drugs. (C) 2000 Elsevier Science Ltd. All rights reserved.

  DOI：

  10.1016/s0968-0896(99)00273-4

文献信息

• Oxazolidinedione derivatives, their production and use
  申请人：Takeda Chemical Industries, Ltd.

  公开号：US05932601A1

  公开（公告）日：1999-08-03

  2,4-Oxazolidinedione derivative represented by the formula: ##STR1## wherein R stands for an optionally substituted hydrocarbon residue or heterocyclic group; Y stands for a group represented by --CO--, --CH(OH)-- or --NR.sup.3 -- (wherein R.sup.3 stands for an optionally substituted alkyl group); m is 0 or 1; n is 0, 1 or 2; A stands for a C.sub.1-7 divalent aliphatic hydrocarbon group; R.sup.1 stands for hydrogen or an alkyl group; ring E stands for a benzene ring having 1 or 2 substituents; L and M respectively stand for hydrogen, or L and M may optionally be combined with each other to form a bond; with a proviso that the partial formula: ##STR2## does not include the formula: ##STR3## wherein R' stands for an alkyl group; or a salt thereof, which has excellent actions of lowering blood sugar and lipid in blood.

  该公式代表的2,4-噁唑烷二酮衍生物：其中R代表可选择取代的碳氢残基或杂环基团；Y代表一个由--CO--, --CH(OH)--或--NR.sup.3--（其中R.sup.3代表可选择取代的烷基基团）表示的基团；m为0或1；n为0, 1或2；A代表一个C.sub.1-7二价脂肪族碳氢基团；R.sup.1代表氢原子或烷基基团；环E代表具有1或2个取代基的苯环；L和M分别代表氢原子，或L和M可以选择性地结合在一起形成一个键；但是，部分公式不包括公式：其中R'代表烷基基团；或其盐，具有降低血糖和血脂的优秀作用。
• Efficient cleavage of the N–O bond of 3,6-dihydro-1,2-oxazines mediated by some α-hetero substituted carbonyl compounds in mild conditions
  作者：Gilles Galvani、Géraldine Calvet、Nicolas Blanchard、Cyrille Kouklovsky

  DOI：10.1039/b718787d

  日期：——

  The efficient cleavage of the N–O bond of some nitroso Diels–Alder cycloadducts has been achieved in mild conditions, mediated either by 2,2-dimethyl-1,3-dioxan-5-one or 1,3-dithiolane-2-carboxaldehyde. These new and purely organic conditions allow an excellent tolerance with respect to many functional groups that would have been affected by previous reductive cleavage conditions.

  在温和条件下，通过 2,2-二甲基-1,3-二恶烷-5-酮或 1,3-二硫杂环己烷-5-酮介导，一些亚硝基 Diels-Alder 环加合物的 N-O 键被有效裂解。 2-甲醛。这些新的纯有机条件对于许多可能受到先前还原裂解条件影响的官能团具有出色的耐受性。