Dimethylmotuporin | 223923-83-9

• 分子结构分类: 有机化合物 - 苯丙烷和聚酮 - 大环内酰胺类
• 英文名称: Dimethylmotuporin
• 英文别名: dimethyl (2Z,5R,6S,9S,12S,13S,16R)-2-ethylidene-12-[(1E,3E,5S,6S)-6-methoxy-3,5-dimethyl-7-phenylhepta-1,3-dienyl]-1,6,13-trimethyl-3,7,10,14,19-pentaoxo-9-propan-2-yl-1,4,8,11,15-pentazacyclononadecane-5,16-dicarboxylate
• CAS: 223923-83-9
• 化学式: C₄₂H₆₁N₅O₁₀
• 分子量: 795.974
• InChiKey: DHVLMLXEYYYGNL-JWPUZGNWSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.5
• 重原子数：
  57
• 可旋转键数：
  12
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.55
• 拓扑面积：
  199
• 氢给体数：
  4
• 氢受体数：
  10

反应信息

• 作为反应物：
  描述：

  Dimethylmotuporin 在 lithium hydroxide 作用下， 以 四氢呋喃 为溶剂， 反应 1.0h， 生成 (-)-motuporin
  参考文献：
  名称：

  Total Synthesis of Motuporin and 5-[l-Ala]-Motuporin

  摘要：

  Total synthesis of the cyclic peptide hepatotoxin motuporin is described, including an efficient synthesis of the constituent amino acid Adda. Three strategies to motuporin are outlined with their relative strengths and weaknesses. Cyclization of the linear peptide precursor was found to proceed moderately well for peptides containing the N-methyldehydrobutyrine residue masked as a threonine, but significant C-terminal epimerization occurred in the presence of the dehydroamino acid. Replacement of the N-methyldehydrobutyrine residue by L-alanine was explored to assess the contribution of this dehydroamino acid to the biochemical activity of motuporin. Some epimerization also was observed during cyclization of the alanine-containing peptide. Synthetic motuporin and both isomers of 5-[L-Ala]-motuporin inhibit the activity of protein phosphatase-l (PP1) in rat adipocyte lysates with comparable IC50 values. These results indicate that the N-methyldehydrobutyrine residue is not essential for PP1 inhibition.

  DOI：

  10.1021/jo982145i
• 作为产物：
  描述：

  methyl (2S,3R)-3-(N-Boc-amino)-4-(tert-butyldimethylsilyloxy)-2-methyl-butanoate 在 4-二甲氨基吡啶 、 lithium hydroxide 、 N-溴代丁二酰亚胺(NBS) 、 四(三苯基膦)钯 、 正丁基锂 、 草酰氯 、 5,5-二甲基-1,3-环己二酮 、 N,N-二异丙基乙胺 、 N,N'-二环己基碳二亚胺 作用下， 以 四氢呋喃 、 二氯甲烷 、 二甲基亚砜 、 乙酸乙酯 、 乙腈 为溶剂， 反应 329.0h， 生成 Dimethylmotuporin
  参考文献：
  名称：

  Total Synthesis of Motuporin and 5-[l-Ala]-Motuporin

  摘要：

  Total synthesis of the cyclic peptide hepatotoxin motuporin is described, including an efficient synthesis of the constituent amino acid Adda. Three strategies to motuporin are outlined with their relative strengths and weaknesses. Cyclization of the linear peptide precursor was found to proceed moderately well for peptides containing the N-methyldehydrobutyrine residue masked as a threonine, but significant C-terminal epimerization occurred in the presence of the dehydroamino acid. Replacement of the N-methyldehydrobutyrine residue by L-alanine was explored to assess the contribution of this dehydroamino acid to the biochemical activity of motuporin. Some epimerization also was observed during cyclization of the alanine-containing peptide. Synthetic motuporin and both isomers of 5-[L-Ala]-motuporin inhibit the activity of protein phosphatase-l (PP1) in rat adipocyte lysates with comparable IC50 values. These results indicate that the N-methyldehydrobutyrine residue is not essential for PP1 inhibition.

  DOI：

  10.1021/jo982145i

文献信息

• Motuporin, A Potent Protein Phosphatase Inhibitor Isolated from the Papua New Guinea Sponge Theonella swinhoei Gray
  作者：E.Dilip de Silva、David E. Williams、Raymond J. Andersen、Heide Klix、Charles F.B. Holmes、Theresa M. Allen

  DOI：10.1016/s0040-4039(00)91674-5

  日期：1992.3

  Motuporin (1), a cyclic pentapeptide that is a potent protein phosphatase-1 inhibitor and cytotoxin, has been isolated from the marine sponge Theonella swinhoei collected in Papua New Guinea. The structure of motuporin was elucidated by spectroscopic analysis and chemical degradation.

  Motuporin（1）是一种环状五肽，是一种有效的蛋白磷酸酶1抑制剂和细胞毒素，已从巴布亚新几内亚收集的海生海绵Theonella swinhoei中分离出来。通过光谱分析和化学降解阐明了motuporin的结构。