(2S,3R,5R)-3-(tert-butyldimethylsilyloxy)-2-(4-methoxybenzyloxy)-5-methyl-8-(trimethylsilyl)oct-7-ynal | 896730-06-6

• 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,3R,5R)-3-(tert-butyldimethylsilyloxy)-2-(4-methoxybenzyloxy)-5-methyl-8-(trimethylsilyl)oct-7-ynal
• 英文别名: (2R,3R,5R)-3-[tert-butyl(dimethyl)silyl]oxy-2-[(4-methoxyphenyl)methoxy]-5-methyl-8-trimethylsilyloct-7-ynal
• CAS: 896730-06-6
• 化学式: C₂₆H₄₄O₄Si₂
• 分子量: 476.804
• InChiKey: HQBDOCSEWLGCDB-SDUSCBPUSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  6.47
• 重原子数：
  32
• 可旋转键数：
  13
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.65
• 拓扑面积：
  44.8
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  (2S,3R,5R)-3-(tert-butyldimethylsilyloxy)-2-(4-methoxybenzyloxy)-5-methyl-8-(trimethylsilyl)oct-7-ynal 在 2,6-二甲基吡啶 、 2,3-二氯-5,6-二氰基-1,4-苯醌 、 magnesium bromide 作用下， 以 phosphate buffer 、 二氯甲烷 、 叔丁醇 为溶剂， 反应 12.75h， 生成 (2R,4S,7R,8R,9R,11R)-1-azido-9-(tert-butyldimethylsilyloxy)-8-hydroxy-2,4,11-trimethyl-7-(triethylsilyloxy)-14-(trimethylsilyl)tetradec-13-yn-5-one
  参考文献：
  名称：

  Antibodies with Broad Specificity to Azaspiracids by Use of Synthetic Haptens

  摘要：

  The development of general, sensitive, portable, and quantitative assays for the azaspiracid (AZA) class of marine toxins is urgently needed. Use of a synthetic hapten containing rings F-I of AZA to generate antibodies that cross-react with the AZAs via their common C28-C40 domain and use of these antibodies in ELISA and immunoaffinity columns are reported. This approach has many advantages over using intact azaspiracids (AZAs) derived from environmental samples or total synthesis as haptens for antibody development. A derivative of the levorotatory C28-C40 azaspiracid domain (1) was synthesized efficiently using a one-pot Staudinger reduction/intramolecular aza-Wittig reaction-imine capture sequence to form the H-I ring spiroaminal and a double intramolecluar hetero-Michael addition to assemble the F-G ring ketal. Conjugation of the hapten 1 to cBSA and immunization in sheep generated antibodies that recognized and bound to ovalbumin-conjugated 1 in the absence of AZA1. This binding was inhibited by 1 in a concentration-dependent manner. A mixture of AZA1, AZA2, AZA3, and AZA6 caused a degree of inhibition of antibody binding consistent with its total AZA content, rather than just its content of AZA1. This result suggests that the antibodies also have a similar affinity for AZA2, AZA3, and AZA6 as they do for AZA1 and that such antibodies are suitable for analysis of AZAs in shellfish samples.

  DOI：

  10.1021/ja066971h
• 作为产物：
  描述：

  (S)-4-benzyl-3-((R)-2-methyl-5-(trimethylsilyl)pent-4-ynoyl)oxazolidin-2-one 在 吡啶 、 咪唑 、 4-二甲氨基吡啶 、 锂硼氢 、 pyridine-SO3 complex 、 水 、 碘 、 叔丁基锂 、 氟化氢吡啶 、 N,N-二异丙基乙胺 、 三苯基膦 、 lithium iodide 作用下， 以 四氢呋喃 、 乙醚 、 二氯甲烷 、 二甲基亚砜 、 正戊烷 为溶剂， 反应 25.24h， 生成 (2S,3R,5R)-3-(tert-butyldimethylsilyloxy)-2-(4-methoxybenzyloxy)-5-methyl-8-(trimethylsilyl)oct-7-ynal
  参考文献：
  名称：

  Antibodies with Broad Specificity to Azaspiracids by Use of Synthetic Haptens

  摘要：

  The development of general, sensitive, portable, and quantitative assays for the azaspiracid (AZA) class of marine toxins is urgently needed. Use of a synthetic hapten containing rings F-I of AZA to generate antibodies that cross-react with the AZAs via their common C28-C40 domain and use of these antibodies in ELISA and immunoaffinity columns are reported. This approach has many advantages over using intact azaspiracids (AZAs) derived from environmental samples or total synthesis as haptens for antibody development. A derivative of the levorotatory C28-C40 azaspiracid domain (1) was synthesized efficiently using a one-pot Staudinger reduction/intramolecular aza-Wittig reaction-imine capture sequence to form the H-I ring spiroaminal and a double intramolecluar hetero-Michael addition to assemble the F-G ring ketal. Conjugation of the hapten 1 to cBSA and immunization in sheep generated antibodies that recognized and bound to ovalbumin-conjugated 1 in the absence of AZA1. This binding was inhibited by 1 in a concentration-dependent manner. A mixture of AZA1, AZA2, AZA3, and AZA6 caused a degree of inhibition of antibody binding consistent with its total AZA content, rather than just its content of AZA1. This result suggests that the antibodies also have a similar affinity for AZA2, AZA3, and AZA6 as they do for AZA1 and that such antibodies are suitable for analysis of AZAs in shellfish samples.

  DOI：

  10.1021/ja066971h

文献信息

• Facile biomimetic syntheses of the azaspiracid spiroaminal
  作者：Son Nguyen、Jianyan Xu、Craig J. Forsyth

  DOI：10.1016/j.tet.2006.01.112

  日期：2006.5

  The azaspiracid natural products display a common spiroaminal-containing terminal domain that has inspired the development of two new methods for spiroaminal syntheses—a Staudinger reduction–aza-Wittig process and a double intramolecular hetero-Michael addition. These effective laboratory approaches proceed through imine and enamine intermediates that may reflect transient biogenetic species.

  氮杂螺旋体天然产物显示出一个常见的含有螺旋体的末端结构域，该结构域启发了两种新的螺旋体合成方法的开发-Staudinger还原-aza-Wittig过程和双分子内异Michael加成。这些有效的实验室方法通过亚胺和烯胺中间体进行，这些中间体可能反映了短暂的生物遗传物种。