(2S,2'R)-benzyl 2-[(3'-{[(tert-butoxy)carbonyl]amino}propionyl)oxy]-4-methylpentanoate | 219606-82-3

• 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: (2S,2'R)-benzyl 2-[(3'-{[(tert-butoxy)carbonyl]amino}propionyl)oxy]-4-methylpentanoate
• 英文别名: benzyl (2S)-2-(3-tert-butoxycarbonylaminopropionyloxy)-4-methylpentanoate；benzyl (2S)-2-(3-tert-butoxycarbonyaminopropionyloxy)-4-methylpentanoate；benzyl (2S)-4-methyl-2-[3-[(2-methylpropan-2-yl)oxycarbonylamino]propanoyloxy]pentanoate
• CAS: 219606-82-3
• 化学式: C₂₁H₃₁NO₆
• 分子量: 393.48
• InChiKey: MKBUXAIBXHGPJT-KRWDZBQOSA-N

物化性质

• 熔点：
  63 °C
• 沸点：
  501.9±35.0 °C(Predicted)
• 密度：
  1.102±0.06 g/cm3(Temp: 20 °C; Press: 760 Torr)(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  3.9
• 重原子数：
  28
• 可旋转键数：
  13
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.57
• 拓扑面积：
  90.9
• 氢给体数：
  1
• 氢受体数：
  6

反应信息

• 作为反应物：
  描述：

  (2S,2'R)-benzyl 2-[(3'-{[(tert-butoxy)carbonyl]amino}propionyl)oxy]-4-methylpentanoate 在 palladium on activated charcoal 2,4,6-三氯苯甲酰氯 、 氢气 、 N,N-二异丙基乙胺 、 三氟乙酸 作用下， 以 四氢呋喃 、 乙酸乙酯 为溶剂， 反应 20.0h， 生成 desepoxyarenastatin A
  参考文献：
  名称：

  强效抗肿瘤大环内酯类 Cryptophycin B 和 Arenastatin A 的不对称合成

  摘要：

  描述了有效的细胞毒剂隐藻素 B 和阿那他丁 A 的高效且高度立体选择性的合成。采用酯衍生的钛烯醇化物介导的顺醛醇反应来生成立体中心C-5和C-6。该路线是收敛的，为合成隐藻素及其家族成员的结构变体提供了方便的途径。

  DOI：

  10.1002/ejoc.200300814
• 作为产物：
  描述：

  L-alpha-羟基异己酸 在 4-二甲氨基吡啶 、 caesium carbonate 、 N,N'-二环己基碳二亚胺 作用下， 以 甲醇 、 二氯甲烷 、 水 为溶剂， 反应 54.0h， 生成 (2S,2'R)-benzyl 2-[(3'-{[(tert-butoxy)carbonyl]amino}propionyl)oxy]-4-methylpentanoate
  参考文献：
  名称：

  强效抗肿瘤大环内酯类 Cryptophycin B 和 Arenastatin A 的不对称合成

  摘要：

  描述了有效的细胞毒剂隐藻素 B 和阿那他丁 A 的高效且高度立体选择性的合成。采用酯衍生的钛烯醇化物介导的顺醛醇反应来生成立体中心C-5和C-6。该路线是收敛的，为合成隐藻素及其家族成员的结构变体提供了方便的途径。

  DOI：

  10.1002/ejoc.200300814

文献信息

• Synthesis of stable analogs in blood and conformational analysis of arenastatin A, a potent cytotoxic spongean depsipeptide
  作者：Nobutoshi Murakami、Satoru Tamura、Weiqi Wang、Tatsuya Takagi、Motomasa Kobayashi

  DOI：10.1016/s0040-4020(01)00339-8

  日期：2001.5

  In order to produce stable analogs in blood of arenastatin A, a potent cytotoxic depsipeptide from the marine sponge Dysidea arenaria, we synthesized four analogs in which the 15-20 ester linkage was modified. Among them, the carba analog and 20-deoxo analog showed stability in serum. The conformation of arenastatin A and its three analogs were analyzed by distance-restrained molecular dynamic calculation to elucidate a three-dimensional stereostructure contributing to the extremely potent cytotoxicity of arenastatin A. (C) 2001 Elsevier Science Ltd. All rights reserved.
• A concise synthesis of the cytotoxic depsipeptide arenastatin A
  作者：James D. White、Jian Hong、Lonnie A. Robarge

  DOI：10.1016/s0040-4039(98)02014-0

  日期：1998.11

  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.
• 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).
• Total Synthesis and Antitubulin Activity of C10 Analogues of Cryptophycin-24
  作者：Suzanne B. Buck、Jacquelyn K. Huff、Richard H. Himes、Gunda I. Georg

  DOI：10.1021/jm030278c

  日期：2004.1.1

  The unsubstituted, 3'-C1, 4'-C1, and 3',4'-diC1 C10 analogues of cryptophycin-24 were prepared via total synthesis and tested in vitro for cytotoxicity against MCF-7 and multi-drug-resistant MCF-7/ADR breast cancer cell lines and in a tubulin assembly assay. The ED50 values ranged from 7.2 to 15.8 muM in the tubulin assay and from 0.05 to 3.4 nM in the cell assays. The presence of a 3'-C1 and/or 4'-C1 substituent on the C10 phenyl ring increased cytotoxicity in the MCF-7 cell line compared to the unsubstituted phenyl ring. The most potent compound in this series possessed a X-Cl substituent on the C10 phenyl ring. The X-Cl analogue had ED50 values of 50 and 580 pM in the MCF-7 and MCF-7/ADR cell lines, respectively. Its activity was very similar to the parent compound cryptophycin-24. Substitution of the 4'-MeO group in cryptophycin-24 with a 4'-C1 moiety did not significantly affect cytotoxicity against MCF-7 and MCF-7/ADR cells compared to the parent compound. These results demonstrated that the 4'-MeO group in cryptophycin-24 is not essential and can be replaced with X-Cl or 4'-C1 substituents.
• 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.