Benzyl-[(S)-1-(benzyl-trimethylsilanylmethyl-carbamoyl)-ethyl]-carbamic acid tert-butyl ester | 607741-39-9

• 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: Benzyl-[(S)-1-(benzyl-trimethylsilanylmethyl-carbamoyl)-ethyl]-carbamic acid tert-butyl ester
• CAS: 607741-39-9
• 化学式: C₂₆H₃₈N₂O₃Si
• 分子量: 454.685
• InChiKey: PHEMNHZVKHGFQZ-NRFANRHFSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  5.72
• 重原子数：
  32.0
• 可旋转键数：
  8.0
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.46
• 拓扑面积：
  49.85
• 氢给体数：
  0.0
• 氢受体数：
  3.0

反应信息

• 作为反应物：
  描述：

  Benzyl-[(S)-1-(benzyl-trimethylsilanylmethyl-carbamoyl)-ethyl]-carbamic acid tert-butyl ester 在 2-乙氧基-1-乙氧碳酰基-1,2-二氢喹啉 、 三乙胺 、 三氟乙酸 作用下， 以 二氯甲烷 、 水 、 乙腈 为溶剂， 反应 17.0h， 生成 (4bR,8S,11S)-6,9,12-Tribenzyl-4b-hydroxy-8,11-dimethyl-5,6,8,9,11,12-hexahydro-4bH-6,9,12,14a-tetraaza-cyclododeca[a]indene-7,10,13,15-tetraone
  参考文献：
  名称：

  A Synthetic Strategy for the Preparation of Cyclic Peptide Mimetics Based on SET-Promoted Photocyclization Processes

  摘要：

  A novel method for the synthesis of cyclic peptide analogues has been developed. The general approach relies on the use of SET-promoted photocyclization reactions of peptides that contain N-terminal phthalimides as light absorbing electron acceptor moieties and C-terminal alpha-amidosilane or alpha-amidocarboxylate centers. Prototypical substrates are prepared by coupling preformed peptides with the acid chloride of N-phthalimidoglycine. Irradiation of these substrates results in the generation of cyclic peptide analogues in modest to good yields. The chemical efficiencies of these processes are not significantly affected by (1) the lengths of the peptide chains separating the phthalimide and alpha-amidosilane or alpha-amidocarboxylate centers and (2) the nature of the penultimate cation radical a-heterolytic fragmentation process (i.e., desilylation vs decarboxylation). An evaluation of the effects of N-alkyl substitution on the amide residues in the peptide chain showed that N-alkyl substitution does not have a major impact on the efficiencies of the photocyclization reactions but that it profoundly increases the stability of the cyclic peptide.

  DOI：

  10.1021/ja030297b
• 作为产物：
  描述：

  二碳酸二叔丁酯 在 1-羟基苯并三唑 、 三乙胺 、 N,N'-二环己基碳二亚胺 作用下， 以 1,4-二氧六环 、 二氯甲烷 、 水 为溶剂， 反应 10.0h， 生成 Benzyl-[(S)-1-(benzyl-trimethylsilanylmethyl-carbamoyl)-ethyl]-carbamic acid tert-butyl ester
  参考文献：
  名称：

  A Synthetic Strategy for the Preparation of Cyclic Peptide Mimetics Based on SET-Promoted Photocyclization Processes

  摘要：

  A novel method for the synthesis of cyclic peptide analogues has been developed. The general approach relies on the use of SET-promoted photocyclization reactions of peptides that contain N-terminal phthalimides as light absorbing electron acceptor moieties and C-terminal alpha-amidosilane or alpha-amidocarboxylate centers. Prototypical substrates are prepared by coupling preformed peptides with the acid chloride of N-phthalimidoglycine. Irradiation of these substrates results in the generation of cyclic peptide analogues in modest to good yields. The chemical efficiencies of these processes are not significantly affected by (1) the lengths of the peptide chains separating the phthalimide and alpha-amidosilane or alpha-amidocarboxylate centers and (2) the nature of the penultimate cation radical a-heterolytic fragmentation process (i.e., desilylation vs decarboxylation). An evaluation of the effects of N-alkyl substitution on the amide residues in the peptide chain showed that N-alkyl substitution does not have a major impact on the efficiencies of the photocyclization reactions but that it profoundly increases the stability of the cyclic peptide.

  DOI：

  10.1021/ja030297b