(2E,4R,5S,6R,7R,8S)-(+)-ethyl 7-tert-butyldimethylsilyloxy-5-hydroxy-2,4,6,8-tetramethyldec-2-enoate | 206651-92-5

• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 异戊烯醇脂质
• 英文名称: (2E,4R,5S,6R,7R,8S)-(+)-ethyl 7-tert-butyldimethylsilyloxy-5-hydroxy-2,4,6,8-tetramethyldec-2-enoate
• 英文别名: (4R,5S,6R,7R,8S,E)-ethyl 7-(tert-butyldimethylsilyloxy)-5-hydroxy-2,4,6,8-tetramethyldec-2-enoate；ethyl (E,4R,5S,6R,7R,8S)-7-[tert-butyl(dimethyl)silyl]oxy-5-hydroxy-2,4,6,8-tetramethyldec-2-enoate
• CAS: 206651-92-5
• 化学式: C₂₂H₄₄O₄Si
• 分子量: 400.674
• InChiKey: AIZSIEXTWCQWQD-RPVMMMRRSA-N

物化性质

• 沸点：
  444.7±45.0 °C(Predicted)
• 密度：
  0.931±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  5.57
• 重原子数：
  27
• 可旋转键数：
  12
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.86
• 拓扑面积：
  55.8
• 氢给体数：
  1
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  (2E,4R,5S,6R,7R,8S)-(+)-ethyl 7-tert-butyldimethylsilyloxy-5-hydroxy-2,4,6,8-tetramethyldec-2-enoate 在 二异丁基氢化铝 、 水 、 rochelle salt 作用下， 以 二氯甲烷 、 甲苯 为溶剂， 反应 1.0h， 以90%的产率得到(4R,5S,6R,7R,8S,E)-7-(tert-butyldimethylsilyloxy)-2,4,6,8-tetramethyldec-2-ene-1,5-diol
  参考文献：
  名称：

  对于callystatin A的C13-C22片段的立体选择性合成的迭代清水非醇醛方法†

  摘要：

  通过以迭代方式利用清水反应，已经实现了Callystatin A的聚丙烯酸酯骨架的有效合成。

  DOI：

  10.1039/c2ob06838a
• 作为产物：
  描述：

  3-戊酮(R)-1-氨基-2-甲氧基甲基吡咯烷腙 在 palladium on activated charcoal 2,6-二甲基吡啶 、 tin(II) trifluoromethanesulfonate 、 氢气 、 二异丁基氢化铝 、 臭氧 、 三乙胺 、 lithium diisopropyl amide 作用下， 以 乙醚 、 乙醇 、 二氯甲烷 为溶剂， 反应 14.0h， 生成 (2E,4R,5S,6R,7R,8S)-(+)-ethyl 7-tert-butyldimethylsilyloxy-5-hydroxy-2,4,6,8-tetramethyldec-2-enoate
  参考文献：
  名称：

  使用SAMP / RAMP alkyl烷基化方法进行（-）-卡利他汀A的不对称全合成。

  摘要：

  [结构：见正文]已实现（-）-卡利他汀A的不对称全合成。生成立体异构中心的关键步骤依赖于利用SAMP / RAMP alkyl烷基化方法以及3,5-二氧代羧酸酯酶促对映选择性还原的醛或酮的不对称α-烷基化。为了构建烯烃部分，采用了高度选择性的Wittig或Horner-Wadsworth-Emmons反应。

  DOI：

  10.1021/ol0256116

文献信息

• Asymmetric Total Synthesis of (−)-Callystatin A and (−)-20-epi-Callystatin A Employing Chemical and Biological Methods
  作者：Dieter Enders、Jose L. Vicario、Andreas Job、Michael Wolberg、Michael Müller

  DOI：10.1002/1521-3765(20020916)8:18<4272::aid-chem4272>3.0.co;2-k

  日期：2002.9.16

  second intermediate 4 the asymmetric alpha-alkylation of an O-protected derivative of 4-hydroxybutanal was performed exploiting the SAMP/RAMP hydrazone alkylation methodology, and followed by a highly Z-selective Horner-Wadsworth-Emmons reaction under modified conditions. For the synthesis of the polypropionate fragment 5 a diastereoselective syn-aldol reaction was employed between a chiral ethyl ketone

  有效的细胞毒性海洋天然产物（-）-Callystatin A及其20-epi类似物的有效不对称全合成已经实现。合成途径涉及三个片段的制备，以在途径的末端彼此偶联。使用3,5-二氧代羧酸酯的生物催化对映选择性还原作为关键步骤获得了第一片段3。对于第二中间体4，利用SAMP / RAMP alkyl烷基化方法进行了O保护的4-羟基丁醛衍生物的不对称α-烷基化反应，然后在修饰条件下进行了高度Z选择性的Horner-Wadsworth-Emmons反应。为了合成聚丙烯酸酯片段5，在手性乙基酮和α-取代的手性醛之间进行了非对映选择性的顺式羟醛反应，两者均通过其相应的RAMP的不对称烷基化再次制备成对映体纯形式。最后，这三个结构单元通过烯丙基三丁基phosph的高度E-选择性Wittig反应偶联，在最终氧化/脱保护序列后得到目标化合物。
• Total synthesis of callystatin A, a potent cytotoxic polyketide from the marine sponge, Callyspongia truncata
  作者：Nobutoshi Murakami、Weiqi Wang、Masashi Aoki、Yasuhiro Tsutsui、Masanori Sugimoto、Motomasa Kobayashi

  DOI：10.1016/s0040-4039(98)00151-8

  日期：1998.4

  A first total synthesis of callystatin A (1), a potent cytotoxic polyketide from the marine sponge Callyspongia truncata, has been achieved by use of an E-selective Wittig olefination and asymmetric Evans aldol condensation as the key reactions. Thus, the absolute stereostructure of 1 previously established by us was confirmed. (C) 1998 Elsevier Science Ltd. All rights reserved.
• Synthesis of a <i>syn,syn,syn,syn</i>-Stereopentad Precursor of the Marine Sponge Polyketide Callystatin A
  作者：James A. Marshall、Russell N. Fitzgerald

  DOI：10.1021/jo9902143

  日期：1999.6.1

  A C13-22 syn,syn,syn,syn-stereopentad precursor of the cytotoxic polyketide callystatin A has been prepared. The synthesis involved BF3-promoted addition of the (M)-allenylstannane 28 to the alpha-methyl-beta-OTBS aldehyde 8 to afford the syn,syn adduct homopropargylic alcohol 29. Protection as the cyclic anisylidene acetal 31 and reduction of the acetylenic triple bond with Red-Al gave the (E)-allylic alcohol 32. This was subjected to Sharpless asymmetric epoxidation and subsequent treatment with an ethylcopper reagent to yield diol 34; hydrogenolysis of the derived tosylate 37 with LiBEt3H afforded 38. Acetal hydrogenolysis with DIBAl-H and oxidation yielded aldehyde 40 which was subjected to Horner-Emmons homologation to afford ester 41. This ester was converted to ester 44, an intermediate in the Kobayashi synthesis, with which it was found to be identical.
• Total Synthesis of (−)-Callystatin A
  作者：Amos B. Smith、Benjamin M. Brandt

  DOI：10.1021/ol0158922

  日期：2001.5.1

  [GRAPHICS]An effective total synthesis of (-)-callystatin A (1), member of the leptomycin family of antibiotics, has been achieved. The synthesis features Evans extended aldol methodology to construct the northern polypropionate subunit and two separate Julia olefinations to assemble the conjugated dienes. The total synthesis proceeded in 2.3% overall yield with the longest linear sequence of 15 steps.