1
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Yu X, Xiao L, Luo T. Enantioselective Total Synthesis of (-)-Vinigrol: The Evolution of a Transannular Diels-Alder Strategy. J Org Chem 2024; 89:1709-1718. [PMID: 38204139 DOI: 10.1021/acs.joc.3c02407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2024]
Abstract
Vinigrol is a structurally and stereochemically complex diterpenoid that displays various potent pharmacological activities. Two generations of synthetic routes were designed and pursued based on a transannular Diels-Alder (TADA) cycloaddition strategy. An intramolecular [2 + 2]photocycloaddition in the presence of the chelating Lewis acid (MgBr2·Et2O) was first discovered to enable the reaction of sterically challenging substrates, which was followed by [2 + 2]cycloreversion to provide α-pyrones fused with a 10-membered ring. Eventually, a new and scalable synthetic route toward (-)-vinigrol was developed and provided over 600 mg materials, manifesting the power of macrocyclic stereocontrol and TADA reaction.
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Affiliation(s)
- Xuerong Yu
- Key Laboratory of Bioorganic Chemistry and Molecular Engineering, Ministry of Education and Beijing National Laboratory for Molecular Science, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Lianghong Xiao
- Key Laboratory of Bioorganic Chemistry and Molecular Engineering, Ministry of Education and Beijing National Laboratory for Molecular Science, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Tuoping Luo
- Key Laboratory of Bioorganic Chemistry and Molecular Engineering, Ministry of Education and Beijing National Laboratory for Molecular Science, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
- Peking-Tsinghua Center for Life Sciences, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing 100871, China
- Institute of Molecular Physiology, Shenzhen Bay Laboratory, Shenzhen, Guangdong 518055, China
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2
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Wang X, Yin G, Wang Y, Zeng Y, Peng Y, Zhang X, Peng X, Wang Z. Asymmetric Total Synthesis of Four Stemona Alkaloids. Org Lett 2023; 25:2213-2217. [PMID: 36966439 DOI: 10.1021/acs.orglett.3c00349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/27/2023]
Abstract
Asymmetric total syntheses of four Stemona alkaloids were accomplished, and among them, bisdehydrostemoninine A and stemoninine A were synthesized for the first time. Notably, these four alkaloids were divergently synthesized from a common tetracyclic intermediate, which was easily obtained from a known compound. Friedel-Crafts acylation was employed to introduce the key side chain at position C3 of Stemona alkaloids.
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Affiliation(s)
- Xiaodong Wang
- School of Pharmacy, Lanzhou University, No. 199 West Donggang Road, Lanzhou 730000, Gansu, China
| | - Gaofeng Yin
- School of Pharmacy, Lanzhou University, No. 199 West Donggang Road, Lanzhou 730000, Gansu, China
| | - Yuqing Wang
- School of Pharmacy, Lanzhou University, No. 199 West Donggang Road, Lanzhou 730000, Gansu, China
| | - Yaofu Zeng
- School of Pharmaceutical Science, Hengyang Medical School, University of South China, Hengyang 421001, Hunan, China
| | - Ying Peng
- School of Pharmaceutical Science, Hengyang Medical School, University of South China, Hengyang 421001, Hunan, China
| | - Xi Zhang
- School of Pharmaceutical Science, Hengyang Medical School, University of South China, Hengyang 421001, Hunan, China
| | - Xue Peng
- School of Pharmaceutical Science, Hengyang Medical School, University of South China, Hengyang 421001, Hunan, China
| | - Zhen Wang
- School of Pharmaceutical Science, Hengyang Medical School, University of South China, Hengyang 421001, Hunan, China
- School of Pharmacy, Lanzhou University, No. 199 West Donggang Road, Lanzhou 730000, Gansu, China
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3
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Wang X, Liu F, Xu T. Catalytic diastereoselective construction of multiple contiguous quaternary carbon stereocenters via [2 + 2] cycloaddition and mechanistic insight. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2022.06.047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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4
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Li H, He Y, Zhang D, Yang L, Zhang J, Long RL, Lu J, Wei J, Yang L, Wei S, Yi D, Zhang Z, Fu Q. Hydrogen bond serving as a protecting group to enable the photocatalytic [2+2] cycloaddition of redox-active aliphatic-amine-containing indole derivatives. Chem Commun (Camb) 2022; 58:3194-3197. [PMID: 35171972 DOI: 10.1039/d1cc06935g] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Redox-sensitive functionalities such as aliphatic amines with low oxidation potentials and easily oxidized by photocatalysts are generally not compatible with photocatalytic reactions. We describe a hydrogen-bond-assisted visible-light-mediated [2+2] cycloaddition of redox-sensitive aliphatic-amine-containing indole derivatives providing a range of cyclobutane-fused polycyclic indoline derivatives, especially bridged-cyclic indolines. Mechanistic studies indicated that the success of the reaction was based on on the formation of H-bonds between the N-atom and alcohol proton of TFE or HFIP, with this formation preventing or blocking the single-electron transfer from the aliphatic amine functionality to the excited photocatalyst.
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Affiliation(s)
- Hao Li
- School of Pharmacy, Southwest Medical University, Luzhou 646000, China.
| | - Yishu He
- School of Pharmacy, Southwest Medical University, Luzhou 646000, China.
| | - Di Zhang
- School of Pharmacy, Southwest Medical University, Luzhou 646000, China.
| | - Li Yang
- School of Pharmacy, Southwest Medical University, Luzhou 646000, China. .,Department of Pharmacy, Chengdu Seventh People's Hospital, Chengdu 610000, China
| | - Jiarui Zhang
- School of Pharmacy, Southwest Medical University, Luzhou 646000, China.
| | - Rui-Ling Long
- School of Pharmacy, Southwest Medical University, Luzhou 646000, China.
| | - Ji Lu
- School of Pharmacy, Southwest Medical University, Luzhou 646000, China.
| | - Jun Wei
- School of Pharmacy, Southwest Medical University, Luzhou 646000, China.
| | - Lin Yang
- School of Pharmacy, Southwest Medical University, Luzhou 646000, China.
| | - Siping Wei
- School of Pharmacy, Southwest Medical University, Luzhou 646000, China.
| | - Dong Yi
- School of Pharmacy, Southwest Medical University, Luzhou 646000, China. .,State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Zhijie Zhang
- School of Pharmacy, Southwest Medical University, Luzhou 646000, China.
| | - Qiang Fu
- School of Pharmacy, Southwest Medical University, Luzhou 646000, China. .,Department of Pharmacy, The Affiliated Hospital of Southwest Medical University, Luzhou 646000, China
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5
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Advances in the synthesis of three-dimensional molecular architectures by dearomatizing photocycloadditions. Tetrahedron 2022. [DOI: 10.1016/j.tet.2021.132087] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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6
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Zhang Z, Yi D, Zhang M, Wei J, Lu J, Yang L, Wang J, Hao N, Pan X, Zhang S, Wei S, Fu Q. Photocatalytic Intramolecular [2 + 2] Cycloaddition of Indole Derivatives via Energy Transfer: A Method for Late-Stage Skeletal Transformation. ACS Catal 2020. [DOI: 10.1021/acscatal.0c01841] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Zhijie Zhang
- Department of Medicinal Chemistry, School of Pharmacy, Southwest Medical University, Luzhou 646000, China
| | - Dong Yi
- Department of Medicinal Chemistry, School of Pharmacy, Southwest Medical University, Luzhou 646000, China
| | - Min Zhang
- Department of Medicinal Chemistry, School of Pharmacy, Southwest Medical University, Luzhou 646000, China
| | - Jun Wei
- Department of Medicinal Chemistry, School of Pharmacy, Southwest Medical University, Luzhou 646000, China
| | - Ji Lu
- Department of Medicinal Chemistry, School of Pharmacy, Southwest Medical University, Luzhou 646000, China
| | - Lin Yang
- Department of Medicinal Chemistry, School of Pharmacy, Southwest Medical University, Luzhou 646000, China
| | - Jun Wang
- Department of Medicinal Chemistry, School of Pharmacy, Southwest Medical University, Luzhou 646000, China
| | - Na Hao
- Department of Medicinal Chemistry, School of Pharmacy, Southwest Medical University, Luzhou 646000, China
| | - Xianchao Pan
- Department of Medicinal Chemistry, School of Pharmacy, Southwest Medical University, Luzhou 646000, China
| | - Shiqi Zhang
- Department of Pharmaceutical Engineering, School of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Siping Wei
- Department of Medicinal Chemistry, School of Pharmacy, Southwest Medical University, Luzhou 646000, China
| | - Qiang Fu
- Department of Medicinal Chemistry, School of Pharmacy, Southwest Medical University, Luzhou 646000, China
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7
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Osberger TJ, Kidd SL, King TA, Spring DR. C(sp 3)-H arylation to construct all-syn cyclobutane-based heterobicyclic systems: a novel fragment collection. Chem Commun (Camb) 2020; 56:7423-7426. [PMID: 32490454 DOI: 10.1039/d0cc03237a] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
All-syn fused cyclobutanes remain an elusive chemotype and thus present an interesting synthetic challenge. Herein, we report the successful application of Pd-catalysed C(sp3)-H arylation of cyclobutane compounds to generate all-syn heterobicyclic fragments using an innovative 'inside-out' approach. Through this strategy we generate a virtual collection of 90 fragments, which we demonstrate to have enhanced three-dimensionality and superior fragment-like properties compared to existing collections.
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Affiliation(s)
- Thomas J Osberger
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, UK. and Department of Chemistry and Biochemistry, California State Polytechnic University, Pomona, CA, USA
| | - Sarah L Kidd
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, UK.
| | - Thomas A King
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, UK.
| | - David R Spring
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, UK.
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8
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Oderinde MS, Mao E, Ramirez A, Pawluczyk J, Jorge C, Cornelius LAM, Kempson J, Vetrichelvan M, Pitchai M, Gupta A, Gupta AK, Meanwell NA, Mathur A, Dhar TGM. Synthesis of Cyclobutane-Fused Tetracyclic Scaffolds via Visible-Light Photocatalysis for Building Molecular Complexity. J Am Chem Soc 2020; 142:3094-3103. [PMID: 31927959 DOI: 10.1021/jacs.9b12129] [Citation(s) in RCA: 77] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
We describe the synthesis through visible-light photocatalysis of novel functionalized tetracyclic scaffolds that incorporate a fused azabicyclo[3.2.0]heptan-2-one motif, which are structurally interesting cores with potential in natural product synthesis and drug discovery. The synthetic approach involves an intramolecular [2 + 2] cycloaddition with concomitant dearomatization of the heterocycle via an energy transfer process promoted by an iridium-based photosensitizer, to build a complex molecular architecture with at least three stereogenic centers from relatively simple, achiral precursors. These fused azabicyclo[3.2.0]heptan-2-one-based tetracycles were obtained in high yield (generally >99%) and with excellent diastereoselectivity (>99:1). The late-stage derivatization of a bromine-substituted, tetracyclic indoline derivative with alkyl groups, employing a mild Negishi C-C bond forming protocol as a means of increasing structural diversity, provides additional modularity that will enable the delivery of valuable building blocks for medicinal chemistry. Density functional theory calculations were used to compute the T1-S0 free energy gap of the olefin-tethered precursors and also to predict their reactivities based on triplet state energy transfer and transition state energy feasibility.
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Affiliation(s)
- Martins S Oderinde
- Department of Discovery Synthesis , Bristol-Myers Squibb Research & Development , Route 206 & Province Line Road , Princeton , New Jersey 08543 . United States
| | - Edna Mao
- Department of Discovery Synthesis , Bristol-Myers Squibb Research & Development , Route 206 & Province Line Road , Princeton , New Jersey 08543 . United States
| | - Antonio Ramirez
- Chemical & Synthetic Development , Bristol-Myers Squibb , 1 Squibb Drive , New Brunswick , New Jersey 08903 , United States
| | - Joseph Pawluczyk
- Department of Discovery Synthesis , Bristol-Myers Squibb Research & Development , Route 206 & Province Line Road , Princeton , New Jersey 08543 . United States
| | - Christine Jorge
- Department of Pharmaceutical Candidate Optimization , Bristol-Myers Squibb Research & Development , Route 206 & Province Line Road , Princeton , New Jersey 08543 . United States
| | - Lyndon A M Cornelius
- Department of Discovery Synthesis , Bristol-Myers Squibb Research & Development , Route 206 & Province Line Road , Princeton , New Jersey 08543 . United States
| | - James Kempson
- Department of Discovery Synthesis , Bristol-Myers Squibb Research & Development , Route 206 & Province Line Road , Princeton , New Jersey 08543 . United States
| | - Muthalagu Vetrichelvan
- Department of Discovery Synthesis , Biocon Bristol-Myers Squibb Research Centre , Plot 2 & 3, Bommasandra Industrial Estate - Phase-IV, Bommasandra-Jigani Link Road , Bengaluru , Karnataka 560099 , India
| | - Manivel Pitchai
- Department of Discovery Synthesis , Biocon Bristol-Myers Squibb Research Centre , Plot 2 & 3, Bommasandra Industrial Estate - Phase-IV, Bommasandra-Jigani Link Road , Bengaluru , Karnataka 560099 , India
| | - Anuradha Gupta
- Department of Discovery Synthesis , Biocon Bristol-Myers Squibb Research Centre , Plot 2 & 3, Bommasandra Industrial Estate - Phase-IV, Bommasandra-Jigani Link Road , Bengaluru , Karnataka 560099 , India
| | - Arun Kumar Gupta
- Department of Discovery Synthesis , Biocon Bristol-Myers Squibb Research Centre , Plot 2 & 3, Bommasandra Industrial Estate - Phase-IV, Bommasandra-Jigani Link Road , Bengaluru , Karnataka 560099 , India
| | - Nicholas A Meanwell
- Department of Discovery Synthesis , Bristol-Myers Squibb Research & Development , Route 206 & Province Line Road , Princeton , New Jersey 08543 . United States
| | - Arvind Mathur
- Department of Discovery Synthesis , Bristol-Myers Squibb Research & Development , Route 206 & Province Line Road , Princeton , New Jersey 08543 . United States
| | - T G Murali Dhar
- Department of Discovery Synthesis , Bristol-Myers Squibb Research & Development , Route 206 & Province Line Road , Princeton , New Jersey 08543 . United States
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9
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Oderinde MS, Kempson J, Smith D, Meanwell NA, Mao E, Pawluczyk J, Vetrichelvan M, Pitchai M, Karmakar A, Rampulla R, Li J, Murali Dhar TG, Mathur A. Intramolecular [2+2] Cycloaddition of N-Allylcinnamamines and N
-Allylcinnamamides by Visible-Light Photocatalysis. European J Org Chem 2019. [DOI: 10.1002/ejoc.201901482] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Martins S. Oderinde
- Department of Discovery Chemistry; Bristol-Myers Squibb Research & Development; Route 206 & Province Line Road 08543 Princeton NJ USA
| | - James Kempson
- Department of Discovery Chemistry; Bristol-Myers Squibb Research & Development; Route 206 & Province Line Road 08543 Princeton NJ USA
| | - Daniel Smith
- Department of Discovery Chemistry; Bristol-Myers Squibb Research & Development; Route 206 & Province Line Road 08543 Princeton NJ USA
| | - Nicholas A. Meanwell
- Department of Discovery Chemistry; Bristol-Myers Squibb Research & Development; Route 206 & Province Line Road 08543 Princeton NJ USA
| | - Edna Mao
- Department of Discovery Chemistry; Bristol-Myers Squibb Research & Development; Route 206 & Province Line Road 08543 Princeton NJ USA
| | - Joseph Pawluczyk
- Department of Discovery Chemistry; Bristol-Myers Squibb Research & Development; Route 206 & Province Line Road 08543 Princeton NJ USA
| | - Muthalagu Vetrichelvan
- Department of Discovery Synthesis; Biocon Bristol-Myers Squibb Research Centre, Plot 2 & 3; Bommasandra Industrial Estate - Phase-IV; Bommasandra-Jigani Link Road 560099 Bengaluru Karnataka India
| | - Manivel Pitchai
- Department of Discovery Synthesis; Biocon Bristol-Myers Squibb Research Centre, Plot 2 & 3; Bommasandra Industrial Estate - Phase-IV; Bommasandra-Jigani Link Road 560099 Bengaluru Karnataka India
| | - Ananta Karmakar
- Department of Discovery Synthesis; Biocon Bristol-Myers Squibb Research Centre, Plot 2 & 3; Bommasandra Industrial Estate - Phase-IV; Bommasandra-Jigani Link Road 560099 Bengaluru Karnataka India
| | - Richard Rampulla
- Department of Discovery Chemistry; Bristol-Myers Squibb Research & Development; Route 206 & Province Line Road 08543 Princeton NJ USA
| | - Jianqing Li
- Department of Discovery Chemistry; Bristol-Myers Squibb Research & Development; 100 Binney Street 02142 Cambridge MA USA
| | - T. G. Murali Dhar
- Department of Discovery Chemistry; Bristol-Myers Squibb Research & Development; Route 206 & Province Line Road 08543 Princeton NJ USA
| | - Arvind Mathur
- Department of Discovery Chemistry; Bristol-Myers Squibb Research & Development; Route 206 & Province Line Road 08543 Princeton NJ USA
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10
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Arai N, Ohkuma T. Stereoselective Construction of Methylenecyclobutane-Fused Indolines through Photosensitized [2+2] Cycloaddition of Allene-Tethered Indole Derivatives. Org Lett 2019; 21:1506-1510. [PMID: 30789275 DOI: 10.1021/acs.orglett.9b00309] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Irradiation of 1-(hexa-4,5-dienoyl)indole derivatives in the presence of an aromatic ketone by a high-pressure mercury lamp through Pyrex glass gave the corresponding cyclized products stereoselectively in high yields. The major part of the products was an all- cis-fused methylenecyclobutane-type compound produced through [2+2] cycloaddition, accompanied by small amounts of alkynes via 1,5-hydrogen transfer of a biradical intermediate. Among a range of aromatic ketones, 3',4'-dimethoxyacetophenone was found to sensitize the substrate quite effectively.
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Affiliation(s)
- Noriyoshi Arai
- Division of Applied Chemistry, Faculty of Engineering , Hokkaido University , Sapporo , Hokkaido 060-8628 , Japan
| | - Takeshi Ohkuma
- Division of Applied Chemistry, Faculty of Engineering , Hokkaido University , Sapporo , Hokkaido 060-8628 , Japan.,Frontier Chemistry Center, Faculty of Engineering , Hokkaido University , Sapporo , Hokkaido 060-8628 , Japan
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11
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Xin Y, Rodríguez-Santiago L, Sodupe M, Álvarez-Larena A, Busqué F, Alibés R. Intramolecular Photocycloaddition of 2(5 H)-Furanones to Temporarily Tethered Terminal Alkenes as a Stereoselective Source of Enantiomerically Pure Polyfunctionalyzed Cyclobutanes. J Org Chem 2018; 83:3188-3199. [PMID: 29461058 DOI: 10.1021/acs.joc.8b00088] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Allyloxymethyloxymethyl and 4-pentenoyloxymethyl substituents have been used as tethering groups to study the intramolecular [2 + 2] photocycloaddition of chiral 5-substituted 2(5 H)-furanones. The photoreactions proceed in good yield and provide the expected regio- and diastereoselective tricyclic compounds with complementary regioselectivity, which depends on whether the vinyl chain is attached to the furanone by an acetal or an ester linkage. Computational simulations agree with experimental observations and indicate that the origin of the different observed regioselectivity in the intramolecular photochemical reaction of lactones 5 and 6 arises from the relative stability of the initial conformers. The synthetic potential of the enantiomerically pure photoadducts is illustrated by preparing an all- cis 1,2,3-trisubstituted cyclobutane bearing fully orthogonally protected hydroxyl groups.
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12
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Zech A, Bach T. Photochemical Reaction Cascade from O-Pent-4-enyl-Substituted Salicylates to Complex Multifunctional Scaffolds. J Org Chem 2018; 83:3069-3077. [PMID: 29478316 DOI: 10.1021/acs.joc.8b00238] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
The arene ring of the title compounds is cleaved by a reaction cascade which is initiated by an intramolecular ortho photocycloaddition reaction. Tricyclic products were obtained in a highly regio- and diastereoselective fashion via a cyclooctatriene intermediate. The facial diastereoselectivity exerted by a stereogenic center in the tether is moderate to good (dr = 65/35 to 82/18). Yields were acceptable (44-87%) except for a single substrate which had a geminal dimethyl substitution in the tether and which gave the respective product in only 14% yield. The reaction is stereoconvergent with regard to the olefin configuration ( E or Z) in agreement with a triplet mechanism of the ortho photocycloaddition step.
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Affiliation(s)
- Andreas Zech
- Department Chemie and Catalysis Research Center (CRC) , Technische Universität München , Lichtenbergstrasse 4 , 85747 Garching , Germany
| | - Thorsten Bach
- Department Chemie and Catalysis Research Center (CRC) , Technische Universität München , Lichtenbergstrasse 4 , 85747 Garching , Germany
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13
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Denisenko AV, Druzhenko T, Skalenko Y, Samoilenko M, Grygorenko OO, Zozulya S, Mykhailiuk PK. Photochemical Synthesis of 3-Azabicyclo[3.2.0]heptanes: Advanced Building Blocks for Drug Discovery. J Org Chem 2017; 82:9627-9636. [DOI: 10.1021/acs.joc.7b01678] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Aleksandr V. Denisenko
- Department
of Chemistry, National Taras Shevchenko University of Kyiv, Volodymyrska 64, Kyiv 01033, Ukraine
- Enamine Ltd. (www.enamine.net), Chervonotkatska 78, Kyiv 02094, Ukraine
| | - Tetiana Druzhenko
- Enamine Ltd. (www.enamine.net), Chervonotkatska 78, Kyiv 02094, Ukraine
- Institute of High Technologies, Academician Glushkov av. 4G, Kyiv 03022, Ukraine
| | - Yevhen Skalenko
- Department
of Chemistry, National Taras Shevchenko University of Kyiv, Volodymyrska 64, Kyiv 01033, Ukraine
- Enamine Ltd. (www.enamine.net), Chervonotkatska 78, Kyiv 02094, Ukraine
| | - Maryna Samoilenko
- Enamine Ltd. (www.enamine.net), Chervonotkatska 78, Kyiv 02094, Ukraine
| | - Oleksandr O. Grygorenko
- Department
of Chemistry, National Taras Shevchenko University of Kyiv, Volodymyrska 64, Kyiv 01033, Ukraine
| | - Sergey Zozulya
- Enamine Ltd. (www.enamine.net), Chervonotkatska 78, Kyiv 02094, Ukraine
- ChemBioCenter, National Taras Shevchenko University of Kyiv, Volodymyrska 64, Kyiv 01601, Ukraine
| | - Pavel K. Mykhailiuk
- Department
of Chemistry, National Taras Shevchenko University of Kyiv, Volodymyrska 64, Kyiv 01033, Ukraine
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14
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Kotha S, Cheekatla SR. A New Synthetic Approach toC2-Symmetric Octacyclic Cage Diol via Claisen Rearrangement and Ring-Closing Metathesis as Key Steps. ChemistrySelect 2017. [DOI: 10.1002/slct.201701633] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Sambasivarao Kotha
- Department of Chemistry; Indian Institute of Technology-Bombay; Mumbai-Powai 400076 India
| | - Subba Rao Cheekatla
- Department of Chemistry; Indian Institute of Technology-Bombay; Mumbai-Powai 400076 India
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15
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Hölzl A, Bach T. Structural rearrangement cascade initiated by irradiation of but-3-enyl orotates. J Photochem Photobiol A Chem 2016. [DOI: 10.1016/j.jphotochem.2015.09.020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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16
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Poplata S, Tröster A, Zou YQ, Bach T. Recent Advances in the Synthesis of Cyclobutanes by Olefin [2 + 2] Photocycloaddition Reactions. Chem Rev 2016; 116:9748-815. [PMID: 27018601 PMCID: PMC5025837 DOI: 10.1021/acs.chemrev.5b00723] [Citation(s) in RCA: 661] [Impact Index Per Article: 82.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2015] [Indexed: 11/30/2022]
Abstract
The [2 + 2] photocycloaddition is undisputedly the most important and most frequently used photochemical reaction. In this review, it is attempted to cover all recent aspects of [2 + 2] photocycloaddition chemistry with an emphasis on synthetically relevant, regio-, and stereoselective reactions. The review aims to comprehensively discuss relevant work, which was done in the field in the last 20 years (i.e., from 1995 to 2015). Organization of the data follows a subdivision according to mechanism and substrate classes. Cu(I) and PET (photoinduced electron transfer) catalysis are treated separately in sections 2 and 4 , whereas the vast majority of photocycloaddition reactions which occur by direct excitation or sensitization are divided within section 3 into individual subsections according to the photochemically excited olefin.
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Affiliation(s)
- Saner Poplata
- Department Chemie and Catalysis
Research Center (CRC), Technische Universität
München, D-85747 Garching, Germany
| | - Andreas Tröster
- Department Chemie and Catalysis
Research Center (CRC), Technische Universität
München, D-85747 Garching, Germany
| | - You-Quan Zou
- Department Chemie and Catalysis
Research Center (CRC), Technische Universität
München, D-85747 Garching, Germany
| | - Thorsten Bach
- Department Chemie and Catalysis
Research Center (CRC), Technische Universität
München, D-85747 Garching, Germany
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17
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18
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Umstead WJ, Mukhina OA, Kutateladze DAG. Conformationally Constrained Penta(hetero)cyclic Molecular Architectures via Photoassisted Diversity-Oriented Synthesis. European J Org Chem 2015; 2015:2205-2213. [PMID: 26257575 PMCID: PMC4527657 DOI: 10.1002/ejoc.201403620] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2014] [Indexed: 11/11/2022]
Abstract
Intramolecular cycloadditions of photogenerated azaxylylenes provide access to unprecedented polyheterocyclic scaffolds, suitable for subsequent postphotochemical modifications to further grow molecular complexity. Here we explore approaches to rapid "assembly" of novel photoprecursors with nitrogen/oxygen-rich tethers capable of producing potential pharmacophores and also compatible with subsequent 1,3-dipolar cycloadditions to furnish pentacyclic heterocycles with new structural cores, minimal number of rotatable bonds, and a high content of sp3 hybridized carbons. The modular "assembly" of the photoprecursors and potential variety of postphotochemical modifications of primary photoproducts provide framework for combinatorial implementation of this synthetic strategy.
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Affiliation(s)
- Weston J. Umstead
- Department of Chemistry and Biochemistry, University of Denver, Denver, 80208, USA
| | - Olga A. Mukhina
- Department of Chemistry and Biochemistry, University of Denver, Denver, 80208, USA
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Qi LW, Yang Y, Gui YY, Zhang Y, Chen F, Tian F, Peng L, Wang LX. Asymmetric synthesis of 3,3'-spirooxindoles fused with cyclobutanes through organocatalytic formal [2 + 2] cycloadditions under H-bond-directing dienamine activation. Org Lett 2014; 16:6436-9. [PMID: 25494171 DOI: 10.1021/ol503266q] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The first organocatalytic asymmetric synthesis of a spirooxindole skeleton incorporated with a cyclobutane moiety has been successfully developed on the basis of H-bond-directing dienamine activation. Structurally complex spirocyclobutyl oxindoles, which possess four contiguous stereocenters, including one spiro quaternary center, were obtained in good yields (up to 83%) with excellent β,γ-regioselectivity (>19:1) and stereocontrol (up to >19:1 dr and 97% ee).
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Affiliation(s)
- Liang-Wen Qi
- Key Laboratory of Asymmetric Synthesis and Chirotechnology of Sichuan Province, Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences , Chengdu 610041, China
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