(S)-2-{(R)-3-[(R)-2-tert-Butoxycarbonylamino-3-(3-chloro-4-methoxy-phenyl)-propionylamino]-2-methyl-propionyloxy}-4-methyl-pentanoic acid | 179093-50-6

• 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: (S)-2-{(R)-3-[(R)-2-tert-Butoxycarbonylamino-3-(3-chloro-4-methoxy-phenyl)-propionylamino]-2-methyl-propionyloxy}-4-methyl-pentanoic acid
• 英文别名: Boc-D-Phe(3-Cl,4-OMe)-bAib(R)-OLeu-OH；(2S)-2-[(2R)-3-[[(2R)-3-(3-chloro-4-methoxyphenyl)-2-[(2-methylpropan-2-yl)oxycarbonylamino]propanoyl]amino]-2-methylpropanoyl]oxy-4-methylpentanoic acid
• CAS: 179093-50-6
• 化学式: C₂₅H₃₇ClN₂O₈
• 分子量: 529.03
• InChiKey: ZOIAENXKVONAFM-ZTNFWEORSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.6
• 重原子数：
  36
• 可旋转键数：
  15
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.6
• 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：

  (S)-2-{(R)-3-[(R)-2-tert-Butoxycarbonylamino-3-(3-chloro-4-methoxy-phenyl)-propionylamino]-2-methyl-propionyloxy}-4-methyl-pentanoic acid 在 4-二甲氨基吡啶 、 五氟苯基二苯基磷酸酯 、 N,N-二异丙基乙胺 、 N,N'-二环己基碳二亚胺 作用下， 以 二氯甲烷 、 N,N-二甲基甲酰胺 为溶剂， 反应 35.0h， 生成 cryptophycin 3
  参考文献：
  名称：

  Total Synthesis of Cryptophycins via a Chemoenzymatic Approach

  摘要：

  A highly convergent synthesis of cryptophycins in their enantiomerically-pure forms was achieved. Our strategy consists of the synthesis of the two units 3 and 4 and linking them together to form the macrocyclic ring. The upper unit 3 was prepared from 10 in four steps, and the lower unit 4 was prepared from 20 in three steps. Enantioselective biocatalytic methodology was used to prepare the requisite chiral building blocks, (R)-11 and (R)-19. The stereochemical versatility of this synthetic approach is demonstrated by the synthesis of cryptophycin A and the four diastereomers of cryptophycin C.

  DOI：

  10.1021/jo960972i
• 作为产物：
  描述：

  benzyl (2S)-2-hydroxy-4-methylpentanoate 在 Ra-Ni 氢气 、 N,N'-二环己基碳二亚胺 作用下， 生成 (S)-2-{(R)-3-[(R)-2-tert-Butoxycarbonylamino-3-(3-chloro-4-methoxy-phenyl)-propionylamino]-2-methyl-propionyloxy}-4-methyl-pentanoic acid
  参考文献：
  名称：

  有效抗肿瘤大环内酯类隐藻霉素1和8的对映体全合成。

  摘要：

  DOI：

  10.1021/jo971645t

文献信息

• Efficient and Versatile Stereoselective Synthesis of Cryptophycins
  作者：Christian Alexander Mast、Stefan Eißler、Arvydas Stončius、Hans-Georg Stammler、Beate Neumann、Norbert Sewald

  DOI：10.1002/chem.200500282

  日期：2005.8.5

  units A to D which correspond to the respective amino acids and hydroxy acids. A new synthetic route to unit A allows the selective generation of all four stereogenic centres by introducing two of them in a catalytic asymmetric dihydroxylation, followed by substrate-controlled diastereoselective reactions. The diol also serves as the epoxide precursor. This approach provides selective access to stereoisomers

  隐藻霉素是具有四个逆合成单元A至D的环状双缩肽家族，其分别对应于氨基酸和羟基酸。一条新的合成路线通往A单元，通过在催化不对称二羟基化反应中引入两个立体异构中心，然后进行底物控制的非对映选择性反应，可以选择性生成所有四个立体异构中心。二醇还用作环氧化物前体。这种方法提供了对单元A的立体异构体（对映异构体，差向异构体）的选择性访问，以进行结构-活性关系研究。将单位A衍生物掺入隐藻素-1，隐藻素52和新型隐藻素差向异构体52中。
• 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
• Total Synthesis of Cryptophycins and Their 16-(3-Phenylacryloyl) Derivatives
  作者：Rabindra Rej、Dieu Nguyen、Brian Go、Samuel Fortin、Jean-François Lavallée

  DOI：10.1021/jo960816b

  日期：1996.1.1

  Cryptophycin A, a cyclic depsipeptide isolated from the blue-green alga (cyanobacterium) Nostoc sp.GSV 224, has shown excellent activity against solid tumors implanted in mice. The benzylic epoxide, which was shown to be very important for biological, activity, is also fairly unstable under both acidic and alkaline conditions. The high doses needed to observe in vivo activity might be a result of this instability. In order to solve this problem while preserving the electrophilic character of the benzylic position, enones 1 and 2 have been proposed as promising analogs of the natural product, and a convergent total synthesis of these compounds is described. In addition, the same strategy was used to prepare Cryptophycins A, B, C, and D.