(R)-2-(1H-indol-3-yl)-2-oxo-N-(1-phenylethyl)acetamide | 355022-79-6

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 吲哚及其衍生物
• 英文名称: (R)-2-(1H-indol-3-yl)-2-oxo-N-(1-phenylethyl)acetamide
• 英文别名: 2-(1H-indol-3-yl)-2-oxo-N-[(1R)-1-phenylethyl]acetamide
• CAS: 355022-79-6
• 化学式: C₁₈H₁₆N₂O₂
• 分子量: 292.337
• InChiKey: JCQKMELKMGOGMR-GFCCVEGCSA-N

物化性质

• 熔点：
  213 °C
• 密度：
  1.250±0.06 g/cm3(Temp: 20 °C; Press: 760 Torr)(predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  3.5
• 重原子数：
  22
• 可旋转键数：
  4
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.11
• 拓扑面积：
  62
• 氢给体数：
  2
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  (R)-2-(1H-indol-3-yl)-2-oxo-N-(1-phenylethyl)acetamide 在 4-二甲氨基吡啶 、 sodium hydride 、 N,N-二异丙基乙胺 作用下， 以 二氯甲烷 为溶剂， 反应 2.25h， 生成 (R)-N-methyl-2-oxo-N-(1-phenylethyl)-2-[1-(toluene-4-sulfonyl)-1H-indol-3-yl]acetamide
  参考文献：
  名称：

  在[4 + 2]环加成反应中，电子贫乏的吲哚为亲二烯体的化学选择性完全逆转。Diels-Alder与异质Diels-Alder流程。

  摘要：

  吲哚-3-羧醛1a或吲哚-3-乙二醛酸酯1b与2，3-二甲基丁二烯在热活化下的反应仅导致由吲哚2，3-碳-碳双键的参与而产生的Diels-Alder环加合物。氯化锌和高压（16 kbar）的同时使用会引起初级环加合物进一步反应，现在双环加合物11和12的收率很高，这是两个连续[4 + 2]过程的结果，首先是吲哚2,3 C = C键，其次是3-羰基单元。四环化合物13的制备证明了在串联的顺序过程中使用两种不同的二烯的可能性。羰基双亲烯与Danishefsky二烯之间的相互作用仅产生另一种类型的产物，即由顺序的[4 + 2]杂环加成，甲硅烷基烯醇醚的水解以及甲醇的损失产生的γ-二氢吡喃酮。Mukaiyama型加合物16的分离表明，至少在氯化锌催化下，可能涉及逐步机理。N，N-二取代的吲哚-3-乙二酰胺经过预期的，通常的Diels-Alder工艺，以2,3 C = C键作为亲二烯体，无论采用哪种

  DOI：

  10.1021/jo034719b
• 作为产物：
  描述：

  吲哚-3-乙醛酰氯 、 R(+)-alpha-甲基苄胺 以 乙醚 为溶剂， 生成 (R)-2-(1H-indol-3-yl)-2-oxo-N-(1-phenylethyl)acetamide
  参考文献：
  名称：

  在[4 + 2]环加成反应中，电子贫乏的吲哚为亲二烯体的化学选择性完全逆转。Diels-Alder与异质Diels-Alder流程。

  摘要：

  吲哚-3-羧醛1a或吲哚-3-乙二醛酸酯1b与2，3-二甲基丁二烯在热活化下的反应仅导致由吲哚2，3-碳-碳双键的参与而产生的Diels-Alder环加合物。氯化锌和高压（16 kbar）的同时使用会引起初级环加合物进一步反应，现在双环加合物11和12的收率很高，这是两个连续[4 + 2]过程的结果，首先是吲哚2,3 C = C键，其次是3-羰基单元。四环化合物13的制备证明了在串联的顺序过程中使用两种不同的二烯的可能性。羰基双亲烯与Danishefsky二烯之间的相互作用仅产生另一种类型的产物，即由顺序的[4 + 2]杂环加成，甲硅烷基烯醇醚的水解以及甲醇的损失产生的γ-二氢吡喃酮。Mukaiyama型加合物16的分离表明，至少在氯化锌催化下，可能涉及逐步机理。N，N-二取代的吲哚-3-乙二酰胺经过预期的，通常的Diels-Alder工艺，以2,3 C = C键作为亲二烯体，无论采用哪种

  DOI：

  10.1021/jo034719b

文献信息

• Novel <i>N</i>-(Arylalkyl)indol-3-ylglyoxylylamides Targeted as Ligands of the Benzodiazepine Receptor:  Synthesis, Biological Evaluation, and Molecular Modeling Analysis of the Structure−Activity Relationships
  作者：Giampaolo Primofiore、Federico Da Settimo、Sabrina Taliani、Anna Maria Marini、Ettore Novellino、Giovanni Greco、Antonio Lavecchia、François Besnard、Letizia Trincavelli、Barbara Costa、Claudia Martini

  DOI：10.1021/jm010827j

  日期：2001.7.1

  A series of N-(arylalkyl)indol-3-ylglyoxylylamides (4-8) was synthesized as ligands of the benzodiazepine receptor (BzR) and tested for their ability to displace [H-3]flumazenil from bovine brain membranes. The new compounds, bearing a branched (4) or a geometrically constrained benzyl/phenylethyl amide side chain (5-8), represent the continuation of our research on N-benzylindol-3-ylglyoxylylamides 1 (Da Settimo et al., 1996), N ' -phenylindol-3-ylglyoxylohydrazides 2 (Da Settimo et al., 1998), and N-(indol-3-ylglyoxylyl)alanine derivatives 3 (Primofiore et al., 1989). A few indoles belonging to the previously investigated benzylamides 1 and phenylhydrazides 2 were synthesized and tested to enrich the SARs in these two series. The affinities and the GABA ratios of selected compounds for clonal mammalian alpha (1)beta (2)gamma (2), alpha (3)beta (2)gamma (2), and alpha (5)beta (3 gamma2) BzR subtypes were also determined. It was hypothesized that the reduced flexibility of indoles 4-8 would both facilitate the mapping of the BzR binding cleft and increase the chances of conferring selectivity for the considered receptor subtypes. In the series of indoles 4, the introduction of a methyl group on the benzylic carbon with the R configuration improved affinity of the 5-substituted (5-Cl and 5-NO2) derivatives, whereas it was detrimental for their 5-unsubtituted (5-H) counterparts. All S enantiomers were less potent than the R ones. Replacement of the methyl with hydrophilic substituents on the benzylic carbon lowered affinity. The isoindolinylamide side chain was tolerated if the 5-position was unsubstituted (K-i of 5a 123 nM), otherwise affinity was abolished (5b, c). All the 2-indanylamides 6 and (S)-1-indanylamides 8 were devoid of any appreciable affinity. The 5-Cl and 5-NO2 (R)-1-indanylamides 7b (K-i 80 nM) and 7c (K-i 28 nM) were the most potent among the indoles 5-8 geometrically constrained about the side chain. The 5-H (R)-1-indanylamide 7a displayed a lower affinity (K-i 675 nM). The SARs developed from the new compounds, together with those collected from our previous studies, confirmed the hypothesis of different binding modes for 5-substituted and 5-unsubstituted indoles, suggesting that the shape of the lipophilic pocket L-1 (notation in accordance with Cook's BzR topological model) is asymmetric and highlighted the stereoelectronic and conformational properties of the amide side chain required for high potency. Several of the new indoles showed selectivity for the alpha (1)beta (2)gamma (2) subtype compared with the alpha (3)beta (2)gamma (2) and alpha (5)beta (3)gamma (2) subtypes (e.g.: 4t and 7c bind to these three BzR isoforms with Ki values of 14 nM, 283 nM, 239 nM, and 9 nM, 1960 nM, 95 nM, respectively). The GABA ratios close to unity exhibited by all the tested compounds on each BzR subtype were predictive of an efficacy profile typical of antagonists.
• Complete and Remarkable Reversal of Chemoselectivity in [4 + 2] Cycloadditions Involving Electron-Poor Indoles as Dienophiles. Diels−Alder versus Hetero-Diels−Alder Processes
  作者：Antony Chrétien、Isabelle Chataigner、Nathalie L'Hélia、Serge R. Piettre

  DOI：10.1021/jo034719b

  日期：2003.10.1

  and 12 are now isolated in high yields, the result of two consecutive [4 + 2] processes on, first, the indole 2,3 C=C bond and, second, the 3-carbonyl unit. The possibility of using two different dienes in a tandem, sequential process is demonstrated by the preparation of tetracycle 13. Interactions between the carbonyl dienophile and Danishefsky diene yield exclusively yet another type of product, namely

  吲哚-3-羧醛1a或吲哚-3-乙二醛酸酯1b与2，3-二甲基丁二烯在热活化下的反应仅导致由吲哚2，3-碳-碳双键的参与而产生的Diels-Alder环加合物。氯化锌和高压（16 kbar）的同时使用会引起初级环加合物进一步反应，现在双环加合物11和12的收率很高，这是两个连续[4 + 2]过程的结果，首先是吲哚2,3 C = C键，其次是3-羰基单元。四环化合物13的制备证明了在串联的顺序过程中使用两种不同的二烯的可能性。羰基双亲烯与Danishefsky二烯之间的相互作用仅产生另一种类型的产物，即由顺序的[4 + 2]杂环加成，甲硅烷基烯醇醚的水解以及甲醇的损失产生的γ-二氢吡喃酮。Mukaiyama型加合物16的分离表明，至少在氯化锌催化下，可能涉及逐步机理。N，N-二取代的吲哚-3-乙二酰胺经过预期的，通常的Diels-Alder工艺，以2,3 C = C键作为亲二烯体，无论采用哪种