(3R,4S,5S,6S)-epi-cis-clausenamide | 608128-73-0

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 吡咯烷类
• 英文名称: (3R,4S,5S,6S)-epi-cis-clausenamide
• 英文别名: (+)-epi-clausenamide；(+)epi-clausenamide；(+)-clausenamide；(+)-3R,4S,5S,6S-epiclausenamide；(3R,4S,5S)-3-hydroxy-5-[(S)-hydroxy(phenyl)methyl]-1-methyl-4-phenylpyrrolidin-2-one
• CAS: 608128-73-0
• 化学式: C₁₈H₁₉NO₃
• 分子量: 297.354
• InChiKey: WGYGSZOQGYRGIP-LUKYLMHMSA-N

物化性质

• 熔点：
  108-110 °C
• 沸点：
  531.7±50.0 °C(Predicted)
• 密度：
  1.270±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  1.5
• 重原子数：
  22
• 可旋转键数：
  3
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.28
• 拓扑面积：
  60.8
• 氢给体数：
  2
• 氢受体数：
  3

反应信息

• 作为产物：
  描述：

  肉桂酸乙酯 在 lithium aluminium tetrahydride 、 palladium on activated charcoal 、 氢气 、 氧气 、 sodium ethanolate 、 sodium hydride 、 盐酸-N-乙基-Nˊ-(3-二甲氨基丙基)碳二亚胺 、 三乙胺 、 lithium chloride 、 lithium diisopropyl amide 、 亚磷酸三乙酯 作用下， 以 二甲基亚砜 为溶剂， 生成 (3R,4S,5S,6S)-epi-cis-clausenamide
  参考文献：
  名称：

  （ - ） -黄皮和（+）替代性合成-的4-和6- desphenyl类似物外延-clausenamide

  摘要：

  分别由市售的d-焦谷氨酸和已知的外消旋吡咯烷酮13以旋光活性形式制备（-）-clausenamide的4-和6-去苯基类似物6和7。为了证实的（+）的绝对立体化学-和（ - ） - 7，中间19B被转移到（+） -外延-clausenamide 8。

  DOI：

  10.1016/j.cclet.2011.07.002

文献信息

• Suzuki-Miyaura Coupling Based Enantioselective Synthesis of (+)-epi- Clausenamide and the Enantiomer of Its 3-Deoxy Analogue
  作者：Xiaoming Yu、Lu Zhang、Yumei Zhou

  DOI：10.1055/s-0031-1290804

  日期：2012.5

  The first enantioselective synthesis of two biologically interesting close analogues of clausenamide, namely (+)-epi-clausenamide and (–)-3-deoxy-epi-clausenamide, was reported. Key steps of the synthesis included construction of the chiral pyrrolinone intermediates from d - and l -serine derivatives, introduction of the C4-phenyl by Suzuki–Miyaura coupling and establishment of the C6 configuration

  报道了两种具有生物学意义的黄皮酰胺类似物的首次对映选择性合成，即 (+)-epi-clausenamide 和 (-)-3-deoxy-epi-clausenamide。合成的关键步骤包括从 d - 和 l - 丝氨酸衍生物构建手性吡咯啉酮中间体，通过 Suzuki-Miyaura 偶联引入 C4-苯基以及通过苏式选择性格氏反应建立 C6 构型。详细描述了关键 Suzuki-Miyaura 偶联反应的优化。
• Diastereoselective Addition of Prochiral Nucleophilic Alkenes to α-Chiral <i>N</i>-Sulfonyl Imines
  作者：David A. Gutierrez、James Fettinger、K. N. Houk、Kaori Ando、Jared T. Shaw

  DOI：10.1021/acs.orglett.1c04219

  日期：2022.2.11

  to chiral α-alkoxy N-tosyl imines is described. Alkene geometry is selectively transferred to the newly formed carbon–carbon bond, resulting in stereochemical control of C1, C2, and C3 of the resulting 2-alkoxy-3-N-tosyl-4-alkyl-5-hexene products. A computational analysis to elucidate the high selectivity is also presented. This methodology was employed in the synthesis of two naturally occurring isomers

  描述了路易斯酸促进前手性E-和Z-烯丙基亲核试剂与手性 α-烷氧基N-甲苯磺酰基亚胺的加成。烯烃几何结构选择性地转移到新形成的碳-碳键上，从而对所得 2-烷氧基-3- N-甲苯磺酰基-4-烷基-5-己烯产物的 C1、C2 和 C3 进行立体化学控制。还提出了阐明高选择性的计算分析。该方法用于合成两种天然存在的硫磺酰胺异构体。
• Novel optically active clausenamides, process of the preparation thereof, pharmaceutical composition containing the same and their medical use
  申请人：INSTITUTE OF MATERIA MEDICA, CHINESE ACADEMY OF MEDICAL SCIENCES

  公开号：US20030207935A1

  公开（公告）日：2003-11-06

  The present invention relates to some new optically active clausenamide derivatives, process of the preparation thereof, a pharmaceutical composition containing the same and their medical use, particularly their use in the respects of hypoxia protective, nootropic and neurodegenerative disease such as cerebral ischemia, Alzheimer disease and vascular dementia.

  本发明涉及一些新的光学活性克劳森酰胺衍生物，其制备方法，含有该衍生物的药物组合物以及它们在医学上的用途，特别是在缺氧保护、智力增强和神经退行性疾病方面的用途，如脑缺血、阿尔茨海默病和血管性痴呆症。
• Highly efficient and concise synthesis of both antipodes of SB204900, clausenamide, neoclausenamide, homoclausenamide and ζ-clausenamide. Implication of biosynthetic pathways of clausena alkaloids
  作者：Luo Yang、De-Xian Wang、Qi-Yu Zheng、Jie Pan、Zhi-Tang Huang、Mei-Xiang Wang

  DOI：10.1039/b901965k

  日期：——

  The synthesis of both antipodes of N-methyl-N-[(Z)-styryl]-3-phenyloxirane-2-carboxamide (SB204900), clausenamide, neoclausenamide, homoclausenamide and ζ-clausenamide have been accomplished using (2S,3R)- and (2R,3S)-3-phenyloxirane-2-carboxamides as the starting materials, and SB204900 was found to be a common precursor to other N-heterocyclic clausena alkaloids. Mediated by Brønsted acids under different conditions, for example, SB204900 underwent efficient and diverse alkene-epoxide cyclization, enamide-epoxide cyclization and arene-epoxide cyclization reactions to produce the five-membered N-heterocyclic neoclausenamide, its 6-epimer, the six-membered N-heterocyclic homoclausenamide and the eight-membered N-heterocyclic ζ-clausenamide, respectively, in good to excellent yields. Regiospecific oxidation of neoclausenamide and its 6-epimer afforded neoclausenamidone. Enolization of neoclausenamidone in the presence of LiOH and the subsequent protonation under kinetic conditions at −78 °C led to the epimerization of neoclausenamidone into clausenamidone. Reduction of clausenamidone using NaBH4 furnished clausenamide in high yield.

  以(2S. 3R)-和(2R,3S)-3-苯基环氧乙烷-2-甲酰胺为起始原料，合成了 N-甲基-N-[(Z)-苯乙烯基]-3-苯基环氧乙烷-2-甲酰胺 (SB204900)、克劳森酰胺、新克劳森酰胺、同克劳森酰胺和 δ-克劳森酰胺的两个对位物、发现 SB204900 是其他 N-杂环克劳塞纳生物碱的常见前体。例如，在不同条件下由布氏酸介导，SB204900发生了高效、多样的烯-环氧化物环化反应、烯酰胺-环氧化物环化反应和炔-环氧化物环化反应，分别生成了五元N-杂环新氯森酰胺、其6-表聚体、六元N-杂环同氯森酰胺和八元N-杂环δ-氯森酰胺，收率从良好到极佳。新氯森酰胺及其 6-epimer 的 Regiospecific 氧化反应生成了新氯森酰胺酮。新氯硒脒酮在 LiOH 存在下发生烯醇化反应，随后在 °78 °C的动力学条件下发生质子化反应，从而使新氯硒脒酮发生表聚反应，生成克劳硒脒酮。用 NaBH4 还原克劳烯酰胺酮，可以得到高产率的克劳烯酰胺。
• Synthesis and activity in enhancing long-term potentiation (LTP) of clausenamide stereoisomers
  作者：Zhiqiang Feng、Xingzhou Li、Guojun Zheng、Liang Huang

  DOI：10.1016/j.bmcl.2009.03.018

  日期：2009.4

  Clausenamide, isolated from aqueous extract of dry leaves of Clausena lansium, a Chinese folk medicine, was found to have potent activity in enhancing LTP and show nootropic activity in animal tests. In order to discovery more potent stereoisomers and to analyze the relationship of structure-activity, the synthesis of 16 (8 pairs) optically pure stereoisomers of clausenamide with four chiral centers was achieved. The results of LTP assay showed that the nootropic activity of the stereoisomers of clausenamide is closely related to the configuration of stereoisomers. (C) 2009 Elsevier Ltd. All rights reserved.