lutamide C | 294210-58-5

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯酚醚
• 英文名称: lutamide C
• 英文别名: N-methyl-N-[2-(2,4,6-tribromo-3-methoxyphenyl)ethyl]formamide
• CAS: 294210-58-5
• 化学式: C₁₁H₁₂Br₃NO₂
• 分子量: 429.934
• InChiKey: ZGXRTVWOAWZPLC-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.7
• 重原子数：
  17
• 可旋转键数：
  4
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.36
• 拓扑面积：
  29.5
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  lutamide C 在 盐酸 作用下， 以 甲醇 为溶剂， 反应 2.0h， 以74%的产率得到Convolutamine F
  参考文献：
  名称：

  Synthesis and biological activities of the marine bryozoan alkaloids convolutamines A, C and F, and lutamides A and C

  摘要：

  Synthesis of convolutamines and lutamides, new 2,4,6-tribromo-3-methoxyphenethylamine alkaloids isolated from Floridian marine bryozoan Amathia convoluta, was accomplished by a sequence of reactions starting from 3-hydroxy-phenethylamines. Cytotoxities of the synthetic lutamides, convolutamines and their de-O-methyl derivatives were examined using drug-sensitive and -resistant P388 as well as KB cell lines. The bioassay suggests that the 2,4,6-tribromo-3-methoxyphenethylamine is an indispensable unit Tor detection of the activities. Additionally, a reversal of drug resistance by those alkaloids is recognized. (C) 2000 Elsevier Science Ltd. All rights reserved.

  DOI：

  10.1016/s0968-0896(00)00110-3
• 作为产物：
  描述：

  2-(2,4,6-tribromo-3-methoxyphenyl)acetaldehyde 在 sodium tetrahydroborate 作用下， 以 甲醇 、 水 为溶剂， 反应 34.5h， 生成 lutamide C
  参考文献：
  名称：

  Synthesis of Reported and Revised Structures of Amathamide D and Synthesis of Convolutamine F, H and Lutamide A, C

  摘要：

  Total synthesis of the published structure of amathamide D is described. Methyl 2,3,4-tribromo-5-hydroxybenzoate was selected as starting compound because it is readily accessible via acid-mediated Grob fragmentation- aromatization reaction of 1,4,5,6-tetrabromo-7,7-dimethoxybicyclo[2.2.1]hept-5-en-2-one. The aforementioned ester was transformed into the reported structure of amathamide D through methylation of a hydroxyl group and conversion of the ester moiety to a beta-aminoethyl side chain. The NMR data of the synthetic compound did not conform to the reported natural product structure possessing contiguously positioned beta-aminoethyl side chain, a set of three adjacent bromines, and a methyl ether linkage on the phenyl ring. This prompted us to redefine the natural product structure by synthesizing a product whose spectral data exactly matched with the reported data of amathamide D. The convolutamine H, with completely substituted phenyl ring adorned with an extra methyl ether functional group, has also been synthesized by application of Grob fragmentation-aromatization strategy to 3-(benzyloxy)-1,4,5,6-tetrabromo-7,7-dimethoxybicyclo[2.2.1]hept-5-en-2-one. This approach furnished directly methyl 2,3,4-tribromo-5,6-dimethoxybenzoate, which was converted straightforwardly into convolutamine H. Further, synthesis of convolutamine F and lutamide A and C is also described.

  DOI：

  10.1021/jo3000173