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Obydennik AY, Titov AA, Listratova AV, Borisova TN, Sokolova IL, Rybakov VB, Van der Eycken EV, Voskressensky LG, Varlamov AV. Divergent and Nucleophile-Assisted Rearrangement in the Construction of Pyrrolo[2,1-b][3]benzazepine and Pyrido[2,1-a]isoquinoline Scaffolds. Chemistry 2024; 30:e202302919. [PMID: 37864779 DOI: 10.1002/chem.202302919] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Revised: 10/12/2023] [Accepted: 10/20/2023] [Indexed: 10/23/2023]
Abstract
Under microwave (MW) irradiation at 150 °C in toluene and in the presence of nucleophiles (DMAP, triphenylphosphine and tetrahydrothiophene) 1-substituted 1-ethynyl-2-vinyldi- and tetrahydroisoquinolines undergo [3,3]-sigmatropic rearrangement providing pyrrolo[2,1-b][3]benzazepines in good yields. The replacement of toluene with acetonitrile directs the rearrangement towards the formation of 7,11b-dihydro-6H-pyrido[2,1-a]isoquinolines.
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Affiliation(s)
- Arina Y Obydennik
- Organic Chemistry Department, Science Faculty, Рeoples' Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya St, Moscow, 117198, Russian Federation
| | - Alexander A Titov
- Organic Chemistry Department, Science Faculty, Рeoples' Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya St, Moscow, 117198, Russian Federation
| | - Anna V Listratova
- Organic Chemistry Department, Science Faculty, Рeoples' Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya St, Moscow, 117198, Russian Federation
| | - Tatiana N Borisova
- Organic Chemistry Department, Science Faculty, Рeoples' Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya St, Moscow, 117198, Russian Federation
| | - Irina L Sokolova
- Organic Chemistry Department, Science Faculty, Рeoples' Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya St, Moscow, 117198, Russian Federation
| | - Victor B Rybakov
- Department of Chemistry, Lomonosov Moscow State University, Leninskie Gory, 1-3, Moscow, 119991, Russian Federation
| | - Erik V Van der Eycken
- Organic Chemistry Department, Science Faculty, Рeoples' Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya St, Moscow, 117198, Russian Federation
- Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC), Department of Chemistry, University of Leuven (KU Leuven), Celestijnenlaan 200F, Leuven, 3001, Belgium
| | - Leonid G Voskressensky
- Organic Chemistry Department, Science Faculty, Рeoples' Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya St, Moscow, 117198, Russian Federation
| | - Alexey V Varlamov
- Organic Chemistry Department, Science Faculty, Рeoples' Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya St, Moscow, 117198, Russian Federation
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Fang DS, Deng J, Zheng J, Li WDZ. A stereospecific total synthesis of DL-hexahydroapoerysopine. Chem Commun (Camb) 2022; 58:6506-6509. [PMID: 35575206 DOI: 10.1039/d2cc01892f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A stereospecific total synthesis of DL-hexahydroapoerysopine, an intriguing and historically important Apo rearrangement product of the aromatic Erythrina alkaloids bearing the all-cis ring fusion stereochemistry, was achieved via an efficient acid-mediated stereospecific skeletal rearrangement.
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Affiliation(s)
- Da-Shu Fang
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, China
| | - Jun Deng
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, China
| | - Jianfeng Zheng
- Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs, School of Life Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China.
| | - Wei-Dong Z Li
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, China.,Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs, School of Life Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China.
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