(4S)-4-N-benzylamino-2,5-dimethyl-2-trans-hexenoic acid, ethyl ester | 244033-86-1

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: (4S)-4-N-benzylamino-2,5-dimethyl-2-trans-hexenoic acid, ethyl ester
• 英文别名: ethyl (E,4S)-4-(benzylamino)-2,5-dimethylhex-2-enoate
• CAS: 244033-86-1
• 化学式: C₁₇H₂₅NO₂
• 分子量: 275.391
• InChiKey: MRKQABBGOKCVLR-WSYSLRRZSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.5
• 重原子数：
  20
• 可旋转键数：
  8
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.47
• 拓扑面积：
  38.3
• 氢给体数：
  1
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  (4S)-4-N-benzylamino-2,5-dimethyl-2-trans-hexenoic acid, ethyl ester 在 三乙酰氧基硼氢化钠 、 溶剂黄146 作用下， 以 二氯甲烷 、 氯仿 为溶剂， 反应 360.0h， 生成 (3S,3aS,4S,5R,7aS)-2-Benzyl-3-isopropyl-4,5-dimethyl-2,3,3a,4,5,7a-hexahydro-1H-isoindole-4-carboxylic acid ethyl ester
  参考文献：
  名称：

  Diels−Alder Reactions of Amino Acid-Derived Trienes

  摘要：

  Triene precursors (1a-e, 2a-k) were constructed for substrate-controlled asymmetric Diels-Alder reactions. Boc-L-phenylalanal and Boc-L-valinal were condensed with triethyl phosphonoacetate or 2-phosphonopropionate to generate the alpha,beta-unsaturated esters as dienophiles. Removal of the Boc group to give free amines 4a-d, which after, or without N-benzylation, were treated with 3,5-hexadienoyl chloride to give 1a-e, or with 2,4-hexadienoyl chloride to afford 2a-f. The trienes 2g-i were prepared via reductive alkylation of amines 4a-i with 2,4-hexadienal. The secondary amide triene la failed to yield any Diels-Alder product when heated at 170 degrees C. The tertiary amide trienes 1b-e produced in refluxing toluene the major cycloaddition products that were cia-fused and derived from the exo transition states. Trienes 2a-k underwent surprisingly facile Diels-Alder reactions to produce the major trans-fused isomers that Were derived from the endo transition states. For trienes 2b-h and 2j,k, Diels-Alder reactions proceeded at room temperature. For the primary amide 2a, the Diels-Alder reaction proceeded smoothly in refluxing toluene. The tertiary amide triene 22 was constructed to have two electron-withdrawing ester substituents at the termini of the triene. The Diels-Alder reaction of 22 took place spontaneously at room temperature upon benzoylation of the secondary amine 21 and produced a single isomer derived from the endo transition state. 1,3-Allylic strain is discussed as an important factor in control of the diastereoselectivity.

  DOI：

  10.1021/jo990459f
• 作为产物：
  描述：

  三乙基2-膦酰基丙酯 在 potassium tert-butylate 、 sodium cyanoborohydride 、 溶剂黄146 作用下， 以 四氢呋喃 、 二氯甲烷 为溶剂， 反应 2.33h， 生成 (4S)-4-N-benzylamino-2,5-dimethyl-2-trans-hexenoic acid, ethyl ester
  参考文献：
  名称：

  Diels−Alder Reactions of Amino Acid-Derived Trienes

  摘要：

  Triene precursors (1a-e, 2a-k) were constructed for substrate-controlled asymmetric Diels-Alder reactions. Boc-L-phenylalanal and Boc-L-valinal were condensed with triethyl phosphonoacetate or 2-phosphonopropionate to generate the alpha,beta-unsaturated esters as dienophiles. Removal of the Boc group to give free amines 4a-d, which after, or without N-benzylation, were treated with 3,5-hexadienoyl chloride to give 1a-e, or with 2,4-hexadienoyl chloride to afford 2a-f. The trienes 2g-i were prepared via reductive alkylation of amines 4a-i with 2,4-hexadienal. The secondary amide triene la failed to yield any Diels-Alder product when heated at 170 degrees C. The tertiary amide trienes 1b-e produced in refluxing toluene the major cycloaddition products that were cia-fused and derived from the exo transition states. Trienes 2a-k underwent surprisingly facile Diels-Alder reactions to produce the major trans-fused isomers that Were derived from the endo transition states. For trienes 2b-h and 2j,k, Diels-Alder reactions proceeded at room temperature. For the primary amide 2a, the Diels-Alder reaction proceeded smoothly in refluxing toluene. The tertiary amide triene 22 was constructed to have two electron-withdrawing ester substituents at the termini of the triene. The Diels-Alder reaction of 22 took place spontaneously at room temperature upon benzoylation of the secondary amine 21 and produced a single isomer derived from the endo transition state. 1,3-Allylic strain is discussed as an important factor in control of the diastereoselectivity.

  DOI：

  10.1021/jo990459f

文献信息

• Methods for the synthesis of complex reduced isoindole, isooxyindole and isooxyquinoline libraries
  申请人：Ortho-McNeil Pharmaceutical, Inc.

  公开号：US06667406B1

  公开（公告）日：2003-12-23

  Disclosed are methods of synthesizing libraries of diverse complex hexahydroisoindole, hexahydroisooxyindole and octahydroisooxyquinoline compounds through the use of a facile intramolecular Diels Alder reaction. The invention is further directed to methods for synthesizing the libraries on solid supports. The invention is further directed to methods for identifying and isolating such hexahydroisoindole, hexahydroisooxyindole and octahydroisooxyquinoline compounds with useful and diverse activities from such libraries.

  本发明揭示了一种通过简便的分子内Diels-Alder反应合成多样复杂的六氢异异喹啉、六氢异氧异喹啉和八氢氧异喹啉化合物库的方法。该发明还涉及在固相支持上合成这些库的方法。该发明还涉及从这些库中识别和分离具有有用和多样活性的六氢异异喹啉、六氢异氧异喹啉和八氢氧异喹啉化合物的方法。