(2S)-2-[tert-butyl(dimethyl)silyl]oxy-4-methylpentanoyl chloride | 350245-09-9

• 分子结构分类: 有机化合物 - 有机金属化合物 - 有机类金属化合物
• 英文名称: (2S)-2-[tert-butyl(dimethyl)silyl]oxy-4-methylpentanoyl chloride
• CAS: 350245-09-9
• 化学式: C₁₂H₂₅ClO₂Si
• 分子量: 264.868
• InChiKey: KPOLRBNBOHWYOV-JTQLQIEISA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.19
• 重原子数：
  16
• 可旋转键数：
  6
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.92
• 拓扑面积：
  26.3
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  (2S)-2-[tert-butyl(dimethyl)silyl]oxy-4-methylpentanoyl chloride 在 palladium diacetate 4-二甲氨基吡啶 、 三氟化硼乙醚 、 氰化四丁基铵 、 O-(1H-benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate 、 三乙胺 、 N,N-二异丙基乙胺 、 三氟乙酸 、 2,3-二氯-5,6-二氰基-1,4-苯醌 作用下， 以 二氯甲烷 、 氯仿 、 水 、 乙腈 为溶剂， 反应 51.75h， 生成 desepoxyarenastatin A
  参考文献：
  名称：

  通过N-酰基-β-内酰胺大环内酯化合成隐藻霉素。

  摘要：

  已经开发了一种高效简明的隐藻毒素大环内酯核心合成方法。利用反应性酰基-β-内酰胺中间体的新型大环内酯化在16元大环内酯核心内结合了β-氨基酸部分。这种涉及氰化物引发的酰基-β-内酰胺开环并随后环化的模块化方法已成功应用于隐藻素-24的全合成。该策略还用于有效合成6,6-二甲基取代的脱氯隐霉素52。在这种情况下，通过催化过程实现了双取代的2-氮杂环丁酮的氰化物引发的开环，随后进行大内酯化。

  DOI：

  10.1021/jo0302197
• 作为产物：
  描述：

  L-alpha-羟基异己酸 在 咪唑 、 草酰氯 作用下， 以 二氯甲烷 、 N,N-二甲基甲酰胺 为溶剂， 反应 3.5h， 生成 (2S)-2-[tert-butyl(dimethyl)silyl]oxy-4-methylpentanoyl chloride
  参考文献：
  名称：

  Conjugates of Modified Cryptophycins and RGD-Peptides Enter Target Cells by Endocytosis

  摘要：

  Tumor targeting anticancer drug conjugates that contain a tumor recognition motif (homing device) are of high current relevance. Cryptophycins, naturally occurring cytotoxic cyclo-depsipeptides, have been modified by total synthesis to provide analogues suitable for conjugation to peptide-based homing devices. An array of functionalized beta(2)-amino acids was synthesized and incorporated into cryptophycins. All analogues proved to be highly active in the cytotoxicity assay using the human cervix carcinoma cell line KB-3-1 and its multidrug-resistant subclone KB-V1. Conformational analysis of cryptophycin-52 and two synthetic analogues was performed by NMR and MD methods to obtain information on the influence of the unit C configuration on the overall conformation. An azide-functionalized cryptophycin was connected by CuAAC to an alkyne-containing fluorescently labeled cyclic RGD-peptide as the homing device for internalization studies. Confocal fluorescence microscopy proved integrin-mediated internalization by endocytosis and final lysosomal localization of the cryptophycin prodrug.

  DOI：

  10.1021/jm301346z

文献信息

• Antineoplastic Agents. 561. Total Synthesis of Respirantin^1a
  作者：George R. Pettit、Thomas H. Smith、Song Feng、John C. Knight、Rui Tan、Robin K. Pettit、Peter A. Hinrichs

  DOI：10.1021/np0680735

  日期：2007.7.1

  Total synthesis of the 18-membered ring cyclodepsipeptide believed to be respirantin (1b) has been achieved. The key step in the synthesis is an intramolecular transesterification of the beta-ketoester alcohol 6 to afford the protected macrocycle 5. The synthetic product was shown to be identical to a natural product presumed to be respirantin (1b), and the absolute stereochemistry of six of the seven

  已实现了据信是respirantin（1b）的18元环环二肽的全合成。合成的关键步骤是将β-酮酸酯醇6进行分子内酯交换，以提供受保护的大环5。合成产物显示与假定为respirantin（1b）的天然产物相同，并且绝对立体化学为6环二肽1b的七个不对称中心明确建立。发现Respirantin（1b）是癌细胞生长的显着抑制剂，与抗生素的抗霉素家族有关。
• Rapid Entry into the Cryptophycin Core via an Acyl-β-lactam Macrolactonization:  Total Synthesis of Cryptophycin-24
  作者：MariJean Eggen、Sajiv K. Nair、Gunda I. Georg

  DOI：10.1021/ol010044s

  日期：2001.6.1

  [see structure]. An efficient, concise approach to the macrolide core of the cryptophycins, potent antimitotic agents, has been achieved. The reaction sequence features a novel macrolactonization utilizing a reactive acyl-beta-lactam intermediate that incorporates the beta-amino acid moiety within the 16-membered macrolide core. This highly modular approach, which allows for multiple alterations throughout

  [请参阅结构]。对于隐藻霉素的大环内酯类核心化合物（一种有效的抗有丝分裂剂），已经实现了一种有效，简洁的方法。该反应序列具有利用反应性酰基-β-内酰胺中间体的新型大环内酯化作用，该中间体在16元大环内酯核内掺入了β-氨基酸部分。这种高度模块化的方法可以在整个结构中进行多种更改，已成功地应用于隐藻素24的总合成中。
• “Clicktophycin-52”: A Bioactive Cryptophycin-52 Triazole Analogue
  作者：Markus Nahrwold、Tobias Bogner、Stefan Eissler、Spart Verma、Norbert Sewald

  DOI：10.1021/ol1000473

  日期：2010.3.5

  An endocyclic trans-amide linkage within the macrocyclic antitumor agent cryptophycin-52 was replaced by a 1,4-disubstituted 1H-1,2,3-triazole ring. Macrocyclisation of the triazole analogue was accomplished by macrolactamization as well as by Cu(I)-mediated "click"-cyclization. Compared to cryptophycin-52, in vitro cytotoxicity of "clicktophycin-52" against the multidrug resistant human cancer cell line KB-V1 is only slightly reduced.
• Conjugates of Modified Cryptophycins and RGD-Peptides Enter Target Cells by Endocytosis
  作者：Markus Nahrwold、Christine Weiß、Tobias Bogner、Felix Mertink、Jens Conradi、Benedikt Sammet、Ralf Palmisano、Soledad Royo Gracia、Thomas Preuße、Norbert Sewald

  DOI：10.1021/jm301346z

  日期：2013.3.14

  Tumor targeting anticancer drug conjugates that contain a tumor recognition motif (homing device) are of high current relevance. Cryptophycins, naturally occurring cytotoxic cyclo-depsipeptides, have been modified by total synthesis to provide analogues suitable for conjugation to peptide-based homing devices. An array of functionalized beta(2)-amino acids was synthesized and incorporated into cryptophycins. All analogues proved to be highly active in the cytotoxicity assay using the human cervix carcinoma cell line KB-3-1 and its multidrug-resistant subclone KB-V1. Conformational analysis of cryptophycin-52 and two synthetic analogues was performed by NMR and MD methods to obtain information on the influence of the unit C configuration on the overall conformation. An azide-functionalized cryptophycin was connected by CuAAC to an alkyne-containing fluorescently labeled cyclic RGD-peptide as the homing device for internalization studies. Confocal fluorescence microscopy proved integrin-mediated internalization by endocytosis and final lysosomal localization of the cryptophycin prodrug.
• Synthesis of Cryptophycins via an <i>N</i>-Acyl-β-lactam Macrolactonization
  作者：Ramdas Vidya、MariJean Eggen、Sajiv K. Nair、Gunda I. Georg、Richard H. Himes

  DOI：10.1021/jo0302197

  日期：2003.12.1

  to the synthesis of the macrolide core of the cryptophycins has been developed. A novel macrolactonization utilizing a reactive acyl-beta-lactam intermediate incorporates the beta-amino acid moiety within the 16-membered macrolide core. This modular approach, involving a cyanide-initiated acyl-beta-lactam ring opening followed by cyclization, was successfully applied to the total synthesis of cryptophycin-24

  已经开发了一种高效简明的隐藻毒素大环内酯核心合成方法。利用反应性酰基-β-内酰胺中间体的新型大环内酯化在16元大环内酯核心内结合了β-氨基酸部分。这种涉及氰化物引发的酰基-β-内酰胺开环并随后环化的模块化方法已成功应用于隐藻素-24的全合成。该策略还用于有效合成6,6-二甲基取代的脱氯隐霉素52。在这种情况下，通过催化过程实现了双取代的2-氮杂环丁酮的氰化物引发的开环，随后进行大内酯化。