| 215928-97-5

• 分子结构分类: 有机化合物 - 苯类化合物 - 四氢化萘
• CAS: 215928-97-5
• 化学式: C₁₈H₂₁NO₃
• 分子量: 299.37
• InChiKey: YVVJUTDVVIMYFH-ZEYHHNEASA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.96
• 重原子数：
  22.0
• 可旋转键数：
  0.0
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.5
• 拓扑面积：
  60.77
• 氢给体数：
  2.0
• 氢受体数：
  3.0

反应信息

• 作为反应物：
  描述：

  在 lithium aluminium tetrahydride 作用下， 以 四氢呋喃 为溶剂， 反应 2.0h， 以71%的产率得到(+)-(3S,6S,7S,12aS)-2,3,4,6,7,12-hexahydro-2,3-dimethyl-1H-7,12a-methanobenzo<6,7>cycloocta<1,2-c>pyridine-6,9-diol
  参考文献：
  名称：

  Preparation and Diastereoselective Birch Reduction−Alkylation of Chiral 3,4-Dihydro-1(2H)-isoquinolinones. Enantiospecific Syntheses and Opioid Receptor Affinities of Several Hydro-2,3- dimethyl-1H-7,12a-methanobenzo[6,7]cycloocta[1,2-c]pyridine-9-ols

  摘要：

  Synthetic procedures have been developed to provide 2,3-disubstituted-3,4-dihydro-1(2H)-isoquinones 6, 10, and 15 from (1R,2S)-ephedrine, (1R,2R)-pseudoephedrine, and L-phenylalanine. Birch reduction of 6 and 10 gave enantiomerically related lactam enolates that were alkylated with methyl iodide, allyl bromide, benzyl bromide, p-benzyloxybenzyl bromide, and p-methoxybenzyl bromide to give 7a-7e, 11a, and 11b with diastereoselectivities > 20:1. Birch reduction-methylation of 15 gave 19 with a diastereoselectivity of >35:1. Selective reduction of the disubstituted double bond in 19 with diimide and cleavage of the tert-butyldimethylsilyl ether gave 20b, from which iodoetherification under thermodynamic control gave the iodopyran 21a; iodoetherification of 20b under kinetic control gave the iodotetrahydrofuran 22. Enantiospecific syntheses of analogues of 24 (Schultz, A. G.; Kirincich, S. J.; Rahm, R. Tetrahedron Lett. 1995, 36, 4551-4554) have been developed. Tetracycle 24 is isomeric with the potent analgesic agent levorphanol, but the bridging of the hydroisoquinoline ring by the hydroxybenzyl unit in 24 is at C(7, isoquinoline numbering) and C(8a) rather than at C(1) and C(4a) as in levorphanol. The key step in the transformation of 7d and 7e to tetracyclic phenolic amines (-)-26 and (+)-28 is the Grewe-type cyclization of 7d to 25b and 7e to 25c. K-i values for the inhibition of binding to the mu-, delta-, and kappa-opioid receptors by (-)-26, (+)-26, (+)-28, (-)-28, and (+)-32 are reported.

  DOI：

  10.1021/jo980921g
• 作为产物：
  描述：

  (+)-(3S,8aR)-3,4,6,8a-tetrahydro-8a-<(4-methoxyphenyl)methyl>-2,3-dimethyl-1(2H)-isoquinolinone 在 叔丁基过氧化氢 、 sodium tetrahydroborate 、 重铬酸吡啶 、 cerium(III) chloride 、 三氟甲磺酸 、 Celite 、 三溴化硼 作用下， 以 二氯甲烷 、 苯 为溶剂， 反应 24.0h， 生成
  参考文献：
  名称：

  Preparation and Diastereoselective Birch Reduction−Alkylation of Chiral 3,4-Dihydro-1(2H)-isoquinolinones. Enantiospecific Syntheses and Opioid Receptor Affinities of Several Hydro-2,3- dimethyl-1H-7,12a-methanobenzo[6,7]cycloocta[1,2-c]pyridine-9-ols

  摘要：

  Synthetic procedures have been developed to provide 2,3-disubstituted-3,4-dihydro-1(2H)-isoquinones 6, 10, and 15 from (1R,2S)-ephedrine, (1R,2R)-pseudoephedrine, and L-phenylalanine. Birch reduction of 6 and 10 gave enantiomerically related lactam enolates that were alkylated with methyl iodide, allyl bromide, benzyl bromide, p-benzyloxybenzyl bromide, and p-methoxybenzyl bromide to give 7a-7e, 11a, and 11b with diastereoselectivities > 20:1. Birch reduction-methylation of 15 gave 19 with a diastereoselectivity of >35:1. Selective reduction of the disubstituted double bond in 19 with diimide and cleavage of the tert-butyldimethylsilyl ether gave 20b, from which iodoetherification under thermodynamic control gave the iodopyran 21a; iodoetherification of 20b under kinetic control gave the iodotetrahydrofuran 22. Enantiospecific syntheses of analogues of 24 (Schultz, A. G.; Kirincich, S. J.; Rahm, R. Tetrahedron Lett. 1995, 36, 4551-4554) have been developed. Tetracycle 24 is isomeric with the potent analgesic agent levorphanol, but the bridging of the hydroisoquinoline ring by the hydroxybenzyl unit in 24 is at C(7, isoquinoline numbering) and C(8a) rather than at C(1) and C(4a) as in levorphanol. The key step in the transformation of 7d and 7e to tetracyclic phenolic amines (-)-26 and (+)-28 is the Grewe-type cyclization of 7d to 25b and 7e to 25c. K-i values for the inhibition of binding to the mu-, delta-, and kappa-opioid receptors by (-)-26, (+)-26, (+)-28, (-)-28, and (+)-32 are reported.

  DOI：

  10.1021/jo980921g