5-[1-(2,6-Dichloro-phenyl)-meth-(Z)-ylidene]-imidazolidine-2,4-dione | 137920-46-8

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 唑烷类
• 英文名称: 5-[1-(2,6-Dichloro-phenyl)-meth-(Z)-ylidene]-imidazolidine-2,4-dione
• 英文别名: (5Z)-5-[(2,6-dichlorophenyl)methylidene]imidazolidine-2,4-dione
• CAS: 137920-46-8
• 化学式: C₁₀H₆Cl₂N₂O₂
• 分子量: 257.076
• InChiKey: AWWDEYJAHLEADA-YWEYNIOJSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.3
• 重原子数：
  16
• 可旋转键数：
  1
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.0
• 拓扑面积：
  58.2
• 氢给体数：
  2
• 氢受体数：
  2

反应信息

• 作为产物：
  描述：

  海因 、 2,6-二氯苯甲醛 在 碳酸氢钠 、 C.I.酸性橙108 作用下， 以 乙醇 为溶剂， 以42.7%的产率得到5-[1-(2,6-Dichloro-phenyl)-meth-(Z)-ylidene]-imidazolidine-2,4-dione
  参考文献：
  名称：

  Anticonvulsant Activity of Phenylmethylenehydantoins:  A Structure−Activity Relationship Study

  摘要：

  Phenylmethylenehydantoins (PMHs) and their des-phenyl analogues were synthesized and evaluated for anticonvulsant activity using the maximal electroshock seizure (MES) assay. The phenyl rings of PMHs were substituted with a wide spectrum of groups, and the selection of substituents was guided by Craig's plot. Phenylmethylenehydantoins substituted with alkyl (2, 3, 5, 6, 12, 14), halogeno (35, 38, 41), trifluoromethyl (11), and alkoxyl (23) groups at the phenyl ring were found to exhibit good anticonvulsant activity with EDMES(2.5) ranging from 28 to 90 mg/kg. Substitution of polar groups such as -NO2, -CN, and -OH was found to be less active or inactive on PMHs. Replacement of the phenyl ring with heteroaromatic rings reduced or caused the loss of anticonvulsant activity. The study identified two PMHs, 14 (EDMES(2.5) = 28 +/- 2 mg/kg) and 12 (EDMES(2.5) = 39 4 mg/kg), to be the most active candidates of the series, which are comparable to phenytoin (55, EDMES(2.5) = 30 +/- 2 mg/kg) in their protection against seizure. Multivariate analysis performed on the whole series of 54 PMHs further supported the finding that the alkylated phenylmethylenehydantoins are the best acting compounds. The SAR model derived on the basis of 12 of the most active phenylmethylenehydantoins demonstrated good predicting ability (root-mean-square error of prediction (RMSEP) = 0.134; RMSEE = 0.057) and identified LUMO energy and the log P as critical parameters for their anticonvulsant activity.

  DOI：

  10.1021/jm030450c

文献信息

• Diethyl 2,4-dioxoimidazolidine-5-phosphonates: Horner-Wadsworth-Emmons reagents for the mild and efficient preparation of C-5 unsaturated hydantoin derivatives
  作者：Nicholas A. Meanwell、Herbert R. Roth、Edward C. R. Smith、Donald L. Wedding、J. J. Kim Wright

  DOI：10.1021/jo00024a036

  日期：1991.11

  The phosphonates 19 and 20 were prepared from hydantoin and 1-methylhydantoin, respectively, by way of bromination at C-5 and a subsequent Michaelis-Arbuzov reaction with triethyl phosphite. The Horner-Wadsworth-Emmons-type reagents 19 and 20 were found to react readily with aromatic and aliphatic aldehydes, in the presence of a base, to produce C-5 unsaturated hydantoin derivatives 22 and 26, generally in high yield. The products 22 and 26 were frequently isolated as mixtures of E and Z isomers depending upon the identity of the aldehyde and phosphonate. The isomeric configuration of the products was determined from an analysis of NMR spectral data. Long-range C-13-H-1 coupling constants between the C-4 carbonyl of the hydantoin ring and the olefinic proton were found to be diagnostic of isomer geometry. Conditions were also developed that allowed coupling of 19 and 20 with cyclic and acyclic ketones and alpha-dicarbonyl compounds to afford the corresponding olefinic products. C-5 unsaturated hydantoin derivatives are of synthetic utility as precursors to alpha-amino acid derivatives, pyruvates, and the imidazo[4,5-b]quinolin-2-one heterocyclic ring system, a class of potent inhibitors of low Km cAMP phosphodiesterase and the chromophore present in the siderophore azotobactin.