{(1E,3R,4S)-4,6-bis{[(tert-butyl)dimethylsilyl]oxy}-3-methylhex-1-enyl}benzene | 188926-26-3

• 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: {(1E,3R,4S)-4,6-bis{[(tert-butyl)dimethylsilyl]oxy}-3-methylhex-1-enyl}benzene
• 英文别名: [(1E,3R,4S)-4,6-di{[tert-butyl(dimethyl)silyl]oxy}-3-methylhex-1-enyl]benzene；(3R,4S)-[4,6-bis(tert-butyldimethylsilanyloxy)-3-methylhex-1(E)-enyl]benzene；(3R,4S,1E)-4,6-bis[(tert-butyldimethylsilyl)oxy]-3-methyl-1-phenyl-1-hexene；tert-butyl-[(E,3S,4R)-3-[tert-butyl(dimethyl)silyl]oxy-4-methyl-6-phenylhex-5-enoxy]-dimethylsilane
• CAS: 188926-26-3
• 化学式: C₂₅H₄₆O₂Si₂
• 分子量: 434.81
• InChiKey: WAKOURPOHLXZHX-JQNNGTCXSA-N

物化性质

• 沸点：
  449.4±45.0 °C(Predicted)
• 密度：
  0.906±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  8.14
• 重原子数：
  29
• 可旋转键数：
  11
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.68
• 拓扑面积：
  18.5
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  {(1E,3R,4S)-4,6-bis{[(tert-butyl)dimethylsilyl]oxy}-3-methylhex-1-enyl}benzene 在 4-二甲氨基吡啶 、 N-甲基吲哚酮 、 四丙基高钌酸铵 、 amberlyst-15 、 四丁基氟化铵 、 水 、 O-(1H-benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate 、 溶剂黄146 、 1,8-二氮杂双环[5.4.0]十一碳-7-烯 、 N,N-二异丙基乙胺 、 三氟乙酸 、 lithium chloride 作用下， 以 四氢呋喃 、 二氯甲烷 、 乙腈 为溶剂， 反应 82.0h， 生成 desepoxyarenastatin A
  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：

  3-(叔丁基-二甲基-硅烷基OXY)-丙醛 在 吡啶 、 2,6-二甲基吡啶 、 sodium tetrahydroborate 、 9-borabicyclo[3.3.1]nonane dimer 、 偶氮二甲酸二异丙酯 、 四氯化钛 、 双(三甲基硅烷基)氨基钾 、 1,8-二氮杂双环[5.4.0]十一碳-7-烯 、 间氯过氧苯甲酸 、 三苯基膦 、 sodium iodide 、 鹰爪豆碱 作用下， 以 四氢呋喃 、 乙二醇二甲醚 、 二氯甲烷 、 水 、 N,N-二甲基甲酰胺 、 甲苯 为溶剂， 反应 15.5h， 生成 {(1E,3R,4S)-4,6-bis{[(tert-butyl)dimethylsilyl]oxy}-3-methylhex-1-enyl}benzene
  参考文献：
  名称：

  获得 Cryptophycins 的 5-Hydroxy Acid 片段的灵活途径

  摘要：

  基于 N-（丙酰基）恶唑烷酮 4 和 C3 醛之间的初始 Evans Syn aldol 反应，开发了两种解决方案，用于建立 cryptophycin 的 5-羟基酸亚基中的邻位立体中心的反立体化学。在第一条路线中，仲羟基通过使用光信反应条件反转，而第二条路线的特点是带有甲基的立体中心的反转，通过手性助剂的还原去除、消除得到末端烯烃和反-选择性硼氢化。芳基部分可以通过 Wittig-Horner 烯化或修饰的 Julia 偶联连接。两条路线都以非常有效的方式提供羟基酸16。硼氢化的底物烯烃 22 也可以从 (S)-苹果酸获得。(© Wiley-VCH Verlag GmbH & Co.

  DOI：

  10.1002/ejoc.200210695

文献信息

• Total Synthesis of Cryptophycin 3
  作者：Paulami Danner、Matthias Bauer、Prodeep Phukan、Martin�E. Maier

  DOI：10.1002/ejoc.200400558

  日期：2005.1

  which contains fragments D and C. After extension at the carboxyl function by esterification with the hydroxy ester 10, the seco compounds 37 and 42 were obtained. Ring closure was achieved by macrolactamization in the presence of TBTU as condensing agent. This work features a streamlined synthesis of the hydroxy ester 10, a short synthesis of the amino acid 14 by enantioselective alkylation of the

  缩肽隐藻素 3 (5) 和隐藻素类似物 43 由相应的四个亚基制备。三肽类似物34从起始氨基酯33获得，其包含片段D和C。通过与羟基酯10酯化在羧基官能团处延伸后，获得seco化合物37和42。在作为缩合剂的 TBTU 存在下，通过大环内酰胺化实现闭环。这项工作的特点是简化了羟基酯 10 的合成，通过甘氨酸亚胺 21 的对映选择性烷基化快速合成了氨基酸 14，以及使用 Fmoc 保护基团保护氨基功能。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2005)
• 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).
• A short enantioselective synthesis of a component of cryptophycin A and arenastatin A
  作者：Masaaki Furuyama、Isao Shimizu

  DOI：10.1016/s0957-4166(98)00119-0

  日期：1998.4

  Synthesis of 1, a component of cryptophycin A 2 and arenastatin A 3, was achieved by applying palladium-catalyzed reductive ring opening of optically active alkenyl oxirane 13 for the construction of the vicinal stereogenic centers. (C) 1998 Elsevier Science Ltd. All rights reserved.