(2S)-2-[3-[(2R)-2-(tert-butoxycarbonylamino)-3-(4-methoxyphenyl)propanoylamino]propanoyloxy]-4-methylpentanoic acid | 178977-41-8

• 分子结构分类: 有机化合物 - 有机酸及其衍生物 - 肽模拟物
• 英文名称: (2S)-2-[3-[(2R)-2-(tert-butoxycarbonylamino)-3-(4-methoxyphenyl)propanoylamino]propanoyloxy]-4-methylpentanoic acid
• 英文别名: (2S)-2-[3-[(2R)-2-tert-butoxycarbonylamino-3-(4-methoxyphenyl)propionylamino]propionyloxy]-4-methylpentanoic acid；Boc-D-Tyr(Me)-bAla-OLeu-OH；(2S)-2-[3-[[(2R)-3-(4-methoxyphenyl)-2-[(2-methylpropan-2-yl)oxycarbonylamino]propanoyl]amino]propanoyloxy]-4-methylpentanoic acid
• CAS: 178977-41-8
• 化学式: C₂₄H₃₆N₂O₈
• 分子量: 480.558
• InChiKey: ATAJCIHNGMOVKK-MOPGFXCFSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.4
• 重原子数：
  34
• 可旋转键数：
  15
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.58
• 拓扑面积：
  140
• 氢给体数：
  3
• 氢受体数：
  8

反应信息

• 作为反应物：
  描述：

  (2S)-2-[3-[(2R)-2-(tert-butoxycarbonylamino)-3-(4-methoxyphenyl)propanoylamino]propanoyloxy]-4-methylpentanoic acid 在 4-二甲氨基吡啶 、 二甲基二环氧乙烷 、 O-(1H-benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate 、 N,N-二异丙基乙胺 、 三氟乙酸 作用下， 以 四氢呋喃 、 二氯甲烷 、 乙腈 为溶剂， 反应 3.25h， 生成 cryptophycin-24
  参考文献：
  名称：

  Total Synthesis of Cryptophycin-24 (Arenastatin A) Amenable to Structural Modifications in the C16 Side Chain

  摘要：

  Two efficient protocols for the synthesis of tert-butyl (5S,6R,2E,7E)-5-[(tert-butyldimethylsily oxy]-6-methyl-8-phenyl-2,7-octadienoate, a major component of the cryptophycins, are reported. The first utilized the Noyori reduction and Frater alkylation of methyl 5-benzyloxy-3-oxopentanoate to set two stereogenic centers, which became the C16 hydroxyl and C1' methyl oft-he cryptophycins. The second approach started from 3-p-methoxybenzyloxypropanal and a crotyl borane reagent derived from (-)-alpha -pinene to set both stereocenters in a single step and provided the dephenyl analogue, tert-butyl(5S,6R,2E)-5-[(tert-butyldimethylsilyl)oxy]-6 -methyl-2,7 -octadienoate, in five steps. This compound was readily converted to the 8-phenyl compound via Heck coupling. The silanyloxy esters were efficiently deprotected and coupled to the C2-C10 amino acid fragment to provide desepoxyarenastatin A and its dephenyl analogue. The terminal olefin of the latter was further elaborated via Heck coupling. Epoxidation provided cryptophycin-24 (arenastatin A).

  DOI：

  10.1021/jo000767+
• 作为产物：
  描述：

  benzyl (2S)-2-[3-[(2R)-2-tert-butoxycarbonylamino-3-(4-methoxyphenyl)propionylamino]-propionyloxy]-4-methylpentanoate 在 palladium dihydroxide 氢气 作用下， 以 乙酸乙酯 为溶剂， 生成 (2S)-2-[3-[(2R)-2-(tert-butoxycarbonylamino)-3-(4-methoxyphenyl)propanoylamino]propanoyloxy]-4-methylpentanoic acid
  参考文献：
  名称：

  A concise synthesis of the cytotoxic depsipeptide arenastatin A

  摘要：

  Arenastatin A (1, cryptophycin 24) was synthesized by convergence of hydroxy eater 16 with amino acid derivative 27; two independent and highly efficient routes to 16 are disclosed. (C) 1998 Elsevier Science Ltd. All rights reserved.

  DOI：

  10.1016/s0040-4039(98)02014-0

文献信息

• Cryptophycin affinity labels: synthesis and biological activity of a benzophenone analogue of cryptophycin-24
  作者：Ramdas Vidya、MariJean Eggen、Gunda I. Georg、Richard H. Himes

  DOI：10.1016/s0960-894x(02)01023-5

  日期：2003.2

  An efficient synthesis of a C16 side chain benzophenone analogue of cryptophycin-24 using a crotylboration reaction and Heck coupling as key steps is described. In an in vitro tubulin assembly assay, the benzophenone analogue of the beta isomer (IC(50)=7.4 microM) is twice as active as cryptophycin-24 (IC(50)=15 microM).

  描述了使用巴豆基硼化反应和Heck偶联作为关键步骤，高效合成隐藻霉素24的C16侧链二苯甲酮类似物。在体外微管蛋白组装测定中，β异构体的二苯甲酮类似物（IC（50）= 7.4 microM）的活性是隐藻素-24（IC（50）= 15 microM）的两倍。
• Design and synthesis of a new class of cryptophycins based tubulin inhibitors
  作者：Arvind Kumar、Manjeet Kumar、Simmi Sharma、Santosh Kumar Guru、Shashi Bhushan、Bhahwal Ali Shah

  DOI：10.1016/j.ejmech.2014.11.068

  日期：2015.3

  Tubulin binding compounds represent one of the most attractive targets for anticancer drug development. They broadly fall into two categories viz., tubulin polymerization inhibitors, which block microtubule growth and destabilize microtubules like vinca alkaloids and cryptophycins, and the others, which polymerize microtubules into hyperstable forms represented by family of taxanes. In this context, we aimed at design and synthesis of cryptophycins based macrocyclic depsipeptides, which are synthetically more accessible, however have the basic information to target tubulins and establish structure activity relationship (SAR). Thus, a new class of cryptophycins based marocyclic depsipeptides with a truncated epoxide chain were synthesized as potential tubulin inhibitors. The resultant lead analogues 15a and 16a exhibited good anti-cancer activity, induced apoptosis, caused block/delay in cell cycle as well as significantly reduced the expression of alpha- and beta-tubulins. Molecular modelling studies show that 15a and 16a bind in the same domain as that of cryptophycins. (C) 2015 Elsevier Masson SAS. All rights reserved.
• Total Synthesis of Cryptophycins-1, -3, -4, -24 (Arenastatin A), and -29, Cytotoxic Depsipeptides from Cyanobacteria of the Nostocaceae
  作者：James D. White、Jian Hong、Lonnie A. Robarge

  DOI：10.1021/jo9907585

  日期：1999.8.1

  A convergent synthesis of cryptophycins has been developed in which (5S,GR)-5-hydroxy-6-methyl-8-phenylocta-2(E),7(E)-dienoic add (A) is coupled with an amino acid. segment (B). Two stereoselective routes to A are described, the first employing allylation of an alpha-homochiral aldehyde and the second using asymmetric crotylation of an achiral aldehyde to establish the two stereogenic centers present in a. The styryl moiety of A was attached either via Stille coupling or through a Wadsworth-Emmons condensation with diethyl benzylphosphonate. The amino acid subunit B was prepared from benzyl (2S)-2-hydroxyisocaproate by connection first to N-Boc-beta-alanine or its (2R)-methyl-substituted derivative and then to (2R)-N-Boc-O-methyltyrosine or its nt-chloro derivative. Fusion of the A and B subunits was accomplished by initial esterification of the former with the latter, followed by macrocyclization using diphenyl phosphorazidate. In this way, cryptophycin-3, -4, and -29 were obtained along with the nonnatural cyclic depsipeptide 52. Epoxidation of cryptophycin-3 with dimethyldioxirane gave cryptophycin-1; analogous epoxidation of 52 afforded arenastatin A (cryptophycin-24).
• Synthesis and in vitro cytotoxicity of cryptophycins and related analogs
  作者：Jean-Marc de Muys、Rabindra Rej、Dieu Nguyen、Brian Go、Samuel Fortin、Jean-François Lavallée

  DOI：10.1016/0960-894x(96)00182-5

  日期：1996.5

  Several members of the Cryptophycin family were synthesised using a straightforward convergent approach, The proposed synthetic route was used to prepare novel analogs of Cryptophycins A and B in which the benzylic epoxide moiety was replaced by alternate electrophilic functions. The effect of these modifications on cytotoxic activity was determined on several tumor cell lines. (C) 1996 Elsevier Science Ltd