tert-butyl-((1E,3S,4S,5Z)-1-iodo-2,4-dimethylnona-1,5-dien-7-yn-3-yloxy)dimethylsilane | 1439376-81-4

• 分子结构分类: 有机化合物 - 有机金属化合物 - 有机类金属化合物
• 英文名称: tert-butyl-((1E,3S,4S,5Z)-1-iodo-2,4-dimethylnona-1,5-dien-7-yn-3-yloxy)dimethylsilane
• CAS: 1439376-81-4
• 化学式: C₁₇H₂₉IOSi
• 分子量: 404.407
• InChiKey: NTLUKTDLAYPCSH-VMRNZBDSSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  5.93
• 重原子数：
  20.0
• 可旋转键数：
  5.0
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.65
• 拓扑面积：
  9.23
• 氢给体数：
  0.0
• 氢受体数：
  1.0

反应信息

• 作为反应物：
  描述：

  tert-butyl-((1E,3S,4S,5Z)-1-iodo-2,4-dimethylnona-1,5-dien-7-yn-3-yloxy)dimethylsilane 在 4-二甲氨基吡啶 、 四(三苯基膦)钯 、 二甲基溴化硼 、 C₃₇H₅₄MoN₃ 、 四丁基氟化铵 、 盐酸-N-乙基-Nˊ-(3-二甲氨基丙基)碳二亚胺 、 Tetrabutylammoniumsalz der Diphenylphosphinsaeure 作用下， 以 四氢呋喃 、 甲醇 、 二氯甲烷 、 水 、 N,N-二甲基甲酰胺 、 甲苯 为溶剂， 反应 46.34h， 生成 (1S,2R,3E,9S,10S,11Z,13Z,15S,19R)-9-[(2E,4E)-6-[(2S,3S,4S)-2-ethyl-4-hydroxy-3-methyl-6-oxooxan-4-yl]hexa-2,4-dien-2-yl]-2,3,10,19-tetramethyl-8,16,18-trioxabicyclo[13.3.1]nonadeca-3,11,13-trien-7-one
  参考文献：
  名称：

  Synthesis, Molecular Editing, and Biological Assessment of the Potent Cytotoxin Leiodermatolide

  摘要：

  It was by way of total synthesis that the issues concerning the stereostructure of leiodermatolide (1) have recently been solved; with the target now being unambiguously defined, the mission of synthesis changes as to secure a meaningful supply of this exceedingly scarce natural product derived from a deep-sea sponge. To this end, a scalable route of 19 steps (longest linear sequence) has been developed, which features a catalytic asymmetric propargylation of a highly enolizable beta-keto-lactone, a ring closing alkyne metathesis and a modified Stille coupling as the key transformations. Deliberate digression from this robust blueprint brought a first set of analogues into reach, which allowed the lead qualities of 1 to be assessed. The acquired biodata show that 1 is a potent cytotoxin in human tumor cell proliferation assays, distinguished by GI(50) values in the =3 nM range even for cell lines expressing the Pgp efflux transporter. Studies with human U2OS cells revealed that 1 causes mitotic arrest, micronucleus induction, centrosome amplification and tubulin disruption, even though no evidence for direct tubulin binding has been found in cell-free assays; moreover, the compound does not seem to act through kinase inhibition. Indirect evidence points at centrosome declustering as a possible mechanism of action, which provides a potentially rewarding outlook in that centrosome declustering agents hold promise of being inherently selective for malignant over healthy human tissue.

  DOI：

  10.1021/ja508846g
• 作为产物：
  描述：

  (2S,3S,E)-3-(tert-butyldimethylsilyloxy)-5-iodo-2,4-dimethylpent-4-en-1-ol 在 双(三甲基硅烷基)氨基钾 、 戴斯-马丁氧化剂 作用下， 以 四氢呋喃 、 二氯甲烷 为溶剂， 反应 15.75h， 生成 tert-butyl-((1E,3S,4S,5Z)-1-iodo-2,4-dimethylnona-1,5-dien-7-yn-3-yloxy)dimethylsilane
  参考文献：
  名称：

  不同的全合成抗有丝分裂剂Leodermatolide。

  摘要：

  微妙但与众不同：生物学上很有前途的抗有丝分裂剂leiodermatolide的立体结构尚不确定。以开环炔烃复分解为关键步骤的短而有效且灵活的全合成方法现已解决了这个难题。所示结构和可能的异构体在1 H NMR光谱中的细微差异证明对于该赋值是无价的。

  DOI：

  10.1002/anie.201206670