1-Oxo-2-foramidino>-6-methoxy-3,4-dihydroisoquinoline | 142801-70-5

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 异喹啉及其衍生物
• 英文名称: 1-Oxo-2-foramidino>-6-methoxy-3,4-dihydroisoquinoline
• 英文别名: 1-Oxo-2-{N'-[(S)-2-(3,3-dimethyl-1-methoxybutyl)]foramidino}-6-methoxy-3,4-dihydroisoquinoline
• CAS: 142801-70-5
• 化学式: C₁₈H₂₆N₂O₃
• 分子量: 318.416
• InChiKey: UJGPCGVZXRKWQI-PUMYGXPMSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.78
• 重原子数：
  23.0
• 可旋转键数：
  5.0
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.56
• 拓扑面积：
  51.13
• 氢给体数：
  0.0
• 氢受体数：
  4.0

反应信息

• 作为产物：
  描述：

  (S)-(-)-N,N-dimethyl-N'-<2,(3,3-dimethyl-1-methoxybutyl)>formamidine 在 正丁基锂 、 potassium hydride 作用下， 以 甲苯 为溶剂， 反应 43.58h， 生成 1-Oxo-2-foramidino>-6-methoxy-3,4-dihydroisoquinoline
  参考文献：
  名称：

  Chiral formamidines. The total asymmetric synthesis of (-)-8-azaestrone and related (-)-8-aza-12-oxo-17-desoxoestrone

  摘要：

  Attachment of the chiral formamidine moiety to 6-methoxy-1,2,3,4-tetrahydroisoquinoline afforded the key chiral, nonracemic precursor 8, upon which the azasteroid skeleton was constructed. Asymmetric alkylation with alpha-halo esters or beta-halo ethers gave 15 and 22, respectively, in high ee's. Cyclization, following enamine formation with cyclopentanedione or cyclopentanone, led to the chiral steroidal skeletons 6 and 5, respectively. The final stereocenters, leading to 8-azaestrone 4 with unnatural absolute configuration (antipodal), were accomplished by intramolecular alkylation of (+)-6b and subsequent reduction and ether cleavage. For the 12-oxosteroid 3, the methyl at C-13 was inserted by initial conjupte reduction of the enone 5 with a copper hydride reagent method) requiring the presence of a silyl chloride affording 21. The addition of methyl iodide to C-13 occurred after transforming the triethylsilyl enol ether, 21, to its lithium enolate. Stereochemical assignments for both azasteroids 3 and 4 were confirmed by spectroscopic means including circular dichroism curves.

  DOI：

  10.1021/jo00043a036