benzyl N-(9-phenyl-9-fluorenyl)-4-oxoprolinate | 163594-14-7

• 分子结构分类: 有机化合物 - 苯类化合物 - 芴
• 英文名称: benzyl N-(9-phenyl-9-fluorenyl)-4-oxoprolinate
• 英文别名: benzyl (2S)-4-oxo-1-(9-phenylfluoren-9-yl)pyrrolidine-2-carboxylate
• CAS: 163594-14-7
• 化学式: C₃₁H₂₅NO₃
• 分子量: 459.544
• InChiKey: CVDIZWDAHPEKJQ-LJAQVGFWSA-N

物化性质

• 沸点：
  599.5±50.0 °C(Predicted)
• 密度：
  1.279±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  5.6
• 重原子数：
  35
• 可旋转键数：
  6
• 环数：
  6.0
• sp3杂化的碳原子比例：
  0.16
• 拓扑面积：
  46.6
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  benzyl N-(9-phenyl-9-fluorenyl)-4-oxoprolinate 在 四(三苯基膦)钯 1,3-二甲基巴比妥酸 、 对甲苯磺酸 作用下， 以 四氢呋喃 、 二氯甲烷 为溶剂， 反应 2.0h， 生成 4-氨基-1H-吡咯-2-羧酸苄基酯
  参考文献：
  名称：

  An Effective New Synthesis of 4-Aminopyrrole-2-carboxylates

  摘要：

  [GRAPHICS]A series of 4-amino-1H-pyrrole-2-carboxylic acid benzyl esters has been synthesized in 61-84% yields on treatment of N-PhF-4-oxoproline benzyl ester and its 3-alkyl-substituted derivatives with different primary and secondary amines and a catalytic amount of TsOH in THE 4-Hydroxy-1H-pyrrole-2-carboxylic acid benzyl esters were prepared in 59 and 70% yields by treatment of N-PhF-4-oxoproline benzyl esters with ammonium hydroxide in THF.

  DOI：

  10.1021/ol0262690
• 作为产物：
  描述：

  (2S,4R)-Benzyl 4-hydroxy-N-(9-(9-phenylfluorenyl))prolinate 在 N-氯代丁二酰亚胺 、 二甲基硫 作用下， 以 二氯甲烷 、 甲苯 为溶剂， 反应 3.0h， 以87%的产率得到benzyl N-(9-phenyl-9-fluorenyl)-4-oxoprolinate
  参考文献：
  名称：

  Regioselective Enolization and Alkylation of 4-Oxo-N-(9-phenylfluoren-9-yl)proline:  Synthesis of Enantiopure Proline−Valine and Hydroxyproline−Valine Chimeras

  摘要：

  The regioselective enolization of 4-oxo-N-(9-phenylfluoren-9-yl)proline benzyl ester (5) followed by alkylation with different alkyl halides has been used to synthesize a variety of beta-alkylproline derivatives. In particular, enolization of 5 with 400 mol % of KN(SiMe(3))(2) and alkylation with iodomethane provided 3,3-dimethyl-4-oxo-N-(9-phenylfluoren-9-yl)proline benzyl ester (7a) in excellent yield. Subsequent hydride reduction of ketone 7a and protecting group exchange by hydrogenation in the presence of di-tert-butyl dicarbonate provided enantiopure (2S,4R)- and (2S,4S)-3,3-dimethyl-4-hydroxy-N-(BOC)prolines. 2. Hydroxyproline-valine chimeras (2S,4R)- and (2S,4S)-2 are each synthesized from hydroxyproline in six steps and 27% respective overall yield. Deoxygenation of 3,3-dimethyl-4-hydroxy-N-(9-phenylfluoren-9-yl)proline benzyl esters 9 via their conversion to xanthates 10 followed by tributylstannane-mediated reduction provided 3,3-dimethyl-N-(9-phenylfluoren-9-yl)proline benzyl ester (11) in excellent yield. Hydrogenation of 11 with Pearlman's catalyst in the presence of di-tert-butyl dicarbonate then furnished (2S)-3,3-dimethyl-N-(BOC)proline (1) in the last step of an eight-step synthesis (41% overall yield) from hydroxyproline. Both proline-valine and hydroxyproline-valine chimeras 1 and 2 were designed to serve as tools for studying the conformational requirements of biologically active peptides.

  DOI：

  10.1021/jo9514984

文献信息

• Synthesis of Fused Heteroarylprolines and Pyrrolopyrroles
  作者：Guillaume Jeannotte、William D. Lubell

  DOI：10.1021/jo049612i

  日期：2004.7.1

  the selective deprotection and alkylation of the pyrrole nitrogen of pyrroloprolines 17 were developed to expand the diversity of the heteoaryl systems. Finally, hydrogenolytic cleavage of the PhF and benzyl groups followed by subsequent protection with Boc, Fmoc, and Moz groups was performed to obtain analogues suitable for peptide synthesis. The enantiomeric purity of N-(Boc)pyrrolo-proline 21a was

  按照以下两种方法，从4-氧代-N-（PhF）脯氨酸苄基酯（6，PhF = 9-（9-苯基芴基））制备熔融的杂芳基脯氨酸。首先，羟脯氨酸6的烯丙基化，然后进行Wacker氧化，得到1,4-二酮8，该1,4-二酮8被选择性地转化为吡咯啉脯氨酸10b，吡咯并吡咯12和哒嗪基脯氨酸9。第二，氧代脯氨酸6与一系列N-（Boc）-α-氨基醛15a - e的醛醇缩合和酸催化的环化反应得到吡咯啉脯氨酸17a - e具有各种吡咯5位取代基。开发了吡咯脯氨酸17的吡咯氮的选择性脱保护和烷基化条件，以扩大杂芳基系统的多样性。最后，进行PhF和苄基的氢解裂解，随后用Boc，Fmoc和Moz基团进行保护以获得适合于肽合成的类似物。N-（Boc）吡咯并脯氨酸21a的对映体纯度是通过与l-和d偶联来确定的-苯丙氨酸甲酯和非对映体吡咯质子的检查，证明二肽的非对映体纯度> 99％。因此，这些方法提供了第一批对映体纯的稠合芳
• Diversity-Oriented Synthesis of Functionalized Pyrrolo[3,2-<i>d</i>]pyrimidines with Variation of the Pyrimidine Ring Nitrogen Substituents
  作者：Félix-Antoine Marcotte、Frederik J. R. Rombouts、William D. Lubell

  DOI：10.1021/jo034684f

  日期：2003.9.1

  by treatment with phenyl, allyl, and ethyl isocyanate gave nine different ureas 9. 4-Ureido-1H-pyrrole-2-carboxylic acid benzyl esters 9 were then converted into the respective pyrrolo[3,2-d]pyrimidines 12 using trichloroacetyl chloride in acetonitrile followed by treatment with Cs(2)CO(3). Crystallization from toluene gave the desired deazapurines in 37-55% overall yield from proline 7.

  由4-氧代-N-（PhF）分四个步骤合成了九种2,4-二氧代-2,3,4,5-四氢-1H-吡咯并[3,2-d]嘧啶-6-羧酸苄酯12脯氨酸苄酯7的一般方法，其中分子多样性的元素很容易加到嘧啶氮上。使用苄基，烯丙基和异丙基胺将4-氧代脯氨酸7转化为相应的氨基吡咯8，然后用苯基，烯丙基和异氰酸乙酯处理，得到9种不同的脲9。4-Ureido-1H-吡咯-2-羧酸苄基然后使用三氯乙酰氯的乙腈溶液将酯9转化为相应的吡咯并[3,2-d]嘧啶12，然后用Cs（2）CO（3）处理。从甲苯中结晶可得到所需的脱氮嘌呤类化合物，脯氨酸7的总收率为37-55％。
• Synthesis of Enantiopure Arylkainoids: Preparation of (2S)-.DELTA.3-4-Phenylkainic Acid
  作者：Patrice Gill、William D. Lubell

  DOI：10.1021/jo00114a007

  日期：1995.5
• Synthesis of a Carboxylate Functionalized Bis-Amino Acid Monomer
  作者：Sharad Gupta、Christian E. Schafmeister

  DOI：10.1021/jo802679n

  日期：2009.5.15

  The synthesis of the first functionalized bis-amino acid monomer proAc(2S3S4R) 1 that carries an acetyl side chain is presented. This monomer was incorporated into oligomer 3 and the solution phase structure was determined by using two-dimensional nuclear magnetic resonance. The solution structure confirmed the intended connectivity and stereochemistry of the oligomer. This first functionalized bis-amino acid represents a milestone toward functionalized bis-peptide nanostructures for catalytic, molecular recognition, and nanotechnology applications.
• Large Structural Modification with Conserved Conformation:  Analysis of Δ³-Fused Aryl Prolines in Model β-Turns
  作者：Guillaume Jeannotte、William D. Lubell

  DOI：10.1021/ja0471222

  日期：2004.11.1

  For the first time, the influence of a fused Delta3-arylproline on peptide conformation has been studied by the synthesis and comparison of the conformations of peptides containing proline and pyrrolo-proline, 3 (PyPro). Pyrrolo-proline was demonstrated to be a conservative replacement for Pro in model beta-turns, 4 and 5, as shown by their similar DMSO titration curves, cis/trans-isomer populations, and NOESY spectral data. Pyrrolo-proline may thus be used for studying the structure activity relationships of Pro-containing peptides with minimal modification of secondary structures.