cis-1-Methoxy-3-pentyl-6a,7,8,10a-tetrahydro-6,6-dimethyl-6H-dibenzopyran-9-carboxylic Acid | 130799-57-4

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 苯并吡喃
• 英文名称: cis-1-Methoxy-3-pentyl-6a,7,8,10a-tetrahydro-6,6-dimethyl-6H-dibenzopyran-9-carboxylic Acid
• 英文别名: (6aS,10aR)-1-methoxy-6,6-dimethyl-3-pentyl-6a,7,8,10a-tetrahydrobenzo[c]chromene-9-carboxylic acid
• CAS: 130799-57-4
• 化学式: C₂₂H₃₀O₄
• 分子量: 358.478
• InChiKey: VPBHUGWJPCPNEC-SJORKVTESA-N

计算性质

• 辛醇/水分配系数(LogP)：
  5.1
• 重原子数：
  26.0
• 可旋转键数：
  6.0
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.59
• 拓扑面积：
  55.76
• 氢给体数：
  1.0
• 氢受体数：
  3.0

反应信息

• 作为反应物：
  描述：

  cis-1-Methoxy-3-pentyl-6a,7,8,10a-tetrahydro-6,6-dimethyl-6H-dibenzopyran-9-carboxylic Acid 生成 (6aR,9R)-1-hydroxy-6,6-dimethyl-3-pentyl-6a,7,8,9-tetrahydrobenzo[c]chromene-9-carboxylic acid
  参考文献：
  名称：

  HUFFMAN, JOHN W.;ZHANG, XUEHAI;WU, MING-JUNG;JOYNER, H. HOWARD;PENNINGTON+, J. ORG. CHEM., 56,(1991) N, C. 1481-1489

  摘要：

  DOI：
• 作为产物：
  描述：

  1-Methoxy-3-pentyl-6a,7,8,10a-tetrahydro-6,6-dimethyl-9-carbomethoxy-6H-dibenzopyran 在 氢氧化钾 作用下， 以 甲醇 为溶剂， 反应 4.0h， 以19%的产率得到cis-1-Methoxy-3-pentyl-6a,7,8,10a-tetrahydro-6,6-dimethyl-6H-dibenzopyran-9-carboxylic Acid
  参考文献：
  名称：

  Synthesis of (.+-.)-11-nor-9-carboxy-.DELTA.9-tetrahydrocannabinol. New synthetic approaches to cannabinoids

  摘要：

  A completely regioselective synthesis of (+/-)-11-nor-9-carboxy-DELTA-9-tetrahydrocannabinol (1), a principal human metabolite of DELTA-9-tetrahydrocannabinol (2), has been carried out in seven steps and 14% overall yield from apoverbenone (9) and the bis-MOM ether of olivetol. Condensation of 9 with the aryllithium derived from the bis-MOM ether of olivetol gives an unstable tertiary allylic alcohol that undergoes oxidative rearrangement to give enone 42. Reaction of 42 with acid results in hydrolysis of the MOM ethers and cyclization to benzopyranone 21. Conversion to MOM ether 39 followed by Li/NH3 reduction and trapping of the enolate with N-phenyltriflimide gives vinyl triflate 40 plus the isomer with a cis ring fusion. Palladium-catalyzed carboxylation, hydrolysis of the MOM ether, and separation from cis acid 41 gives pure 1. Model experiments employing unsubstituted resorcinol derivatives that lead to ester 27 are described, as are a number of alternative approaches to acid 1.

  DOI：

  10.1021/jo00004a027