Z-leucylprolyl-N,O-dimethyltyrosine-O-Boc-threonine-OSEM | 126587-61-9

• 分子结构分类: 有机化合物 - 有机酸及其衍生物 - 羧酸及其衍生物
• 英文名称: Z-leucylprolyl-N,O-dimethyltyrosine-O-Boc-threonine-OSEM
• 英文别名: 2-trimethylsilylethoxymethyl (2S,3R)-3-[(2S)-3-(4-methoxyphenyl)-2-[methyl-[(2S)-1-[(2S)-4-methyl-2-(phenylmethoxycarbonylamino)pentanoyl]pyrrolidine-2-carbonyl]amino]propanoyl]oxy-2-[(2-methylpropan-2-yl)oxycarbonylamino]butanoate
• CAS: 126587-61-9
• 化学式: C₄₅H₆₈N₄O₁₂Si
• 分子量: 885.14
• InChiKey: GBDGWJJFCIBQAR-NWSLEIMJSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  6.08
• 重原子数：
  62
• 可旋转键数：
  26
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.6
• 拓扑面积：
  188
• 氢给体数：
  2
• 氢受体数：
  12

反应信息

• 作为反应物：
  描述：

  Z-leucylprolyl-N,O-dimethyltyrosine-O-Boc-threonine-OSEM 在 palladium on activated charcoal 氢气 作用下， 以 甲醇 、 乙酸乙酯 为溶剂， 以98%的产率得到L-leucyl-L-prolyl-N,O-dimethyl-L-tyrosine-N-boc-O-SEM-L-threonine
  参考文献：
  名称：

  Total Syntheses and Biological Investigations of Tamandarins A and B and Tamandarin A Analogs

  摘要：

  Tamandarins A (1) and B (2), two natural products similar in structure to didemnin B (3), were recently isolated from a Brazilian marine ascidian of the family Didemnidae. The cytotoxicity of 1 was reported to be somewhat more potent in vitro than that of 3 against various human cancer cell lines. The present account describes the first total syntheses of 1 and 2, and the syntheses of tamandarin A side chain analogues. The cytotoxicity data for these compounds show that the side chain modifications exhibit a parallel effect for both didemnins and tamandarins. This observation supports tamandarins' role as didemnins' mimic.

  DOI：

  10.1021/ja010222c
• 作为产物：
  描述：

  N-苄氧羰基-L-酪氨酸 在 palladium on activated charcoal N-甲基吗啉 、 4-二甲氨基吡啶 、 氢氧化钾 、 氢气 、 四丁基硫酸氢铵 、 双(2-氧代-3-恶唑烷基)次磷酰氯 、 三乙胺 作用下， 以 四氢呋喃 、 甲醇 、 乙酸乙酯 、 苯 为溶剂， -15.0 ℃ 、275.79 kPa 条件下， 反应 15.0h， 生成 Z-leucylprolyl-N,O-dimethyltyrosine-O-Boc-threonine-OSEM
  参考文献：
  名称：

  didemnins A、B 和 C 的全合成和结构研究

  摘要：

  Didemnins A、B 和 C 以立体控制的方式有效制备，产生常见的大环，并在单独的步骤中，在 L-苏氨酸的氨基上引入取代基作为光学纯单元。我们设想 L-亮氨酸和 HIP 基团 (2S,4S) 之间以及 L-苏氨酸和异司他汀 (3S,4R,5S) 之间的断开将提供两个单元：HIP-异司他汀单元 (I) 和四肽单元 (II) )

  DOI：

  10.1021/ja00177a030

文献信息

• Mild, selective cleavage of amino acid and peptide β-(trimethylsilyl)ethoxymethyl (SEM) esters by magnesium bromide
  作者：Wei-Chuan Chen、Matthew D. Vera、Madeleine M. Joullié

  DOI：10.1016/s0040-4039(97)00863-0

  日期：1997.6

  β-(trimethylsilyl)ethoxymethyl (SEM) esters of aliphatic acids. This methodology has now been extended to amino acid and peptide derivatives in the presence of protecting groups typically encountered in peptide chemistry, including the Boc, Cbz, Fmoc and Troc carbamates as well as benzyl-, tert-butyl- and tert-butyldimethylsilyl ethers. The stability of fluoride sensitive protecting groups to magnesium

  先前已显示溴化镁醚化物可裂解脂肪族酸的β-（三甲基甲硅烷基）乙氧基甲基（SEM）酯。在存在于肽化学中通常遇到的保护基的情况下，该方法现已扩展至氨基酸和肽衍生物，包括Boc，Cbz，Fmoc和Troc氨基甲酸酯以及苄基，叔丁基和叔丁基二甲基甲硅烷基醚。氟化物敏感的保护基团对溴化镁的稳定性提高了有机合成中SEM酯去除的选择性。
• Synthetic studies of didemnins. IV. Synthesis of the macrocycle
  作者：William R. Ewing、Bruce D. Harris、Wen-Ren Li、Madeleine M. Joullie

  DOI：10.1016/s0040-4039(01)80647-x

  日期：1989.1

  A stereocontrolled route to the 23-membered macrocycle found in the didemnins is described.

  描述了在双氢精蛋白中发现的到23元大环的立体控制途径。
• Total synthesis of (−)-tamandarin B
  作者：Madeleine M Joullié、Padma Portonovo、Bo Liang、David J Richard

  DOI：10.1016/s0040-4039(00)01409-x

  日期：2000.12

  The synthesis of tamandarin B is described. Key steps in the synthesis of the macrocycle component include a diastereoselective ketone reduction, linear precursor formation via an activated pentafluorophenyl ester, and HATU-promoted cyclization. Side-chain coupling was achieved in excellent yield with the newly developed coupling reagent DEPBT. (C) 2000 Published by Elsevier Science Ltd.
• The First Total Synthesis of (−)-Tamandarin A
  作者：Bo Liang、Padma Portonovo、Matthew D. Vera、Dong Xiao、Madeleine M. Joullié

  DOI：10.1021/ol9910058

  日期：1999.10.1

  [GRAPHICS]Tamandarin A (1), a newly isolated natural product similar in structure to didemnin a (2), was shown to be somewhat more active in vitro than 2 against pancreatic carcinoma with an ED50 value 1.5 to 2 ng/mL. We report here the first total synthesis of 1. The key steps include a practical stereoselective synthesis of the Hiv-isostatine unit, high-yielding linear precursor formation, a successful macrocyclization, and coupling of the macrocycle with the side chain to afford tamandarin A (1).
• EWING, WILLIAM R.;HARRIS, BRUCE D.;LI, WEN-REN;JOULLIE, MADELEINE M., TETRAHEDRON LETT., 30,(1989) N9, C. 3757-3760
  作者：EWING, WILLIAM R.、HARRIS, BRUCE D.、LI, WEN-REN、JOULLIE, MADELEINE M.

  DOI：——

  日期：——