1
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Lu F, Shao Y, Yan S, Yang D, Song H, Zhang D, Liu XY, Qin Y. Asymmetric Synthesis of the Functionalized A/E-Ring Fragment of C 18-Diterpenoid Alkaloids. J Org Chem 2024; 89:2807-2811. [PMID: 38324536 DOI: 10.1021/acs.joc.3c02745] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2024]
Abstract
A new asymmetric synthesis of the A/E-ring fragment of C18-diterpenoid alkaloids is described. The crucial contiguous stereogenic centers at C4, C5, and C11 were established through an asymmetric Michael addition/allylation sequence. The unique azabicyclo[3.3.1]nonane motif (A/E rings) was assembled by employing ring-closing metathesis and Mitsunobu reaction as key strategies.
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Affiliation(s)
- Fei Lu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Yu Shao
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Shulin Yan
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Dingyi Yang
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Hao Song
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Dan Zhang
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Xiao-Yu Liu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Yong Qin
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
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2
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Jiang G, Huang C, Harrison W, Li H, Zhou M, Zhao H. Ene Reductase Enabled Intramolecular β-C-H Functionalization of Substituted Cyclohexanones for Efficient Synthesis of Bridged Bicyclic Nitrogen Scaffolds. Angew Chem Int Ed Engl 2023; 62:e202302125. [PMID: 37002909 PMCID: PMC10222568 DOI: 10.1002/anie.202302125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2023] [Revised: 03/24/2023] [Accepted: 03/31/2023] [Indexed: 04/03/2023]
Abstract
Herein we report that ene reductases (EREDs) can facilitate an unprecedented intramolecular β-C-H functionalization reaction for the synthesis of bridged bicyclic nitrogen heterocycles containing the 6-azabicyclo[3.2.1]octane scaffold. To streamline the synthesis of these privileged motifs, we developed a gram-scale one-pot chemoenzymatic cascade by combining iridium photocatalysis with EREDs, using readily available N-phenylglycines and cyclohexenones that can be obtained from biomass. Further derivatization using enzymatic or chemical methods can convert 6-azabicyclo[3.2.1]octan-3-one into 6-azabicyclo[3.2.1]octan-3α-ols, which can be potentially utilized for the synthesis of azaprophen and its analogues for drug discovery. Mechanistic studies revealed the reaction requires oxygen, presumably to produce oxidized flavin, which can selectively dehydrogenate the 3-substituted cyclohexanone derivatives to form the α,β-unsaturated ketone, which subsequently undergoes spontaneous intramolecular aza-Michael addition under basic conditions.
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Affiliation(s)
- Guangde Jiang
- Department of Chemical and Biomolecular Engineering, Center for Advanced Bioenergy and Bioproducts Innovation, Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Chunshuai Huang
- Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Wesley Harrison
- Department of Chemical and Biomolecular Engineering, Center for Advanced Bioenergy and Bioproducts Innovation, Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Hongxiang Li
- Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Megan Zhou
- Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Huimin Zhao
- Department of Chemical and Biomolecular Engineering, Center for Advanced Bioenergy and Bioproducts Innovation, Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
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3
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Zhang N, Jiang H, Ma Z. Concise Synthesis of (±)-Myrioneurinol Enabled by Sequential [2+2] Cycloaddition/Retro-Mannich Fragmentation/Mannich Reaction. Angew Chem Int Ed Engl 2022; 61:e202200085. [PMID: 35289970 DOI: 10.1002/anie.202200085] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Indexed: 01/21/2023]
Abstract
A concise total synthesis of (±)-myrioneurinol has been achieved in 14 steps. An efficient AgSbF6 /t-BuCl-catalyzed intramolecular [2+2] cycloaddition reaction of the alkynone-tethered enamine was developed to prepare the highly strained cyclobutene. It was used in combination with a subsequent retro-Mannich fragmentation/Mannich reaction to efficiently construct the tricyclic core of myrioneurinol.
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Affiliation(s)
- Nanping Zhang
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry & Chemical Engineering, South China University of Technology, Wushan Road-381, Guangzhou, 510641, P.R. China
| | - Huanfeng Jiang
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry & Chemical Engineering, South China University of Technology, Wushan Road-381, Guangzhou, 510641, P.R. China
| | - Zhiqiang Ma
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry & Chemical Engineering, South China University of Technology, Wushan Road-381, Guangzhou, 510641, P.R. China.,State Key Laboratory of Chemical Oncogenomics, Guangdong Provincial Key Laboratory of Chemical Genomics, Peking University, Shenzhen Graduate School, Shenzhen, Guangdong, 518055, P.R. China
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4
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Fu C, Sungnoi W, Tu J, Kelley SP, Harmata M. Tropane Skeleta from the Intramolecular Photocycloaddition of (4+3) Cycloadducts of Oxidopyridinium Ions and Dienes. Org Lett 2022; 24:3521-3525. [PMID: 35511589 DOI: 10.1021/acs.orglett.2c01228] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Easily prepared cycloadducts derived from the (4+3) cycloaddition of oxidopyridinium ions with dienes reacted intramolecularly in a [2+2] cycloaddition process to afford complex polycyclic species in which the tropane skeleton was embedded.
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Affiliation(s)
- Chencheng Fu
- Department of Chemistry, University of Missouri-Columbia, Columbia, Missouri 65211, United States
| | - Wanna Sungnoi
- Department of Chemistry, University of Missouri-Columbia, Columbia, Missouri 65211, United States
| | - Jianzhuo Tu
- Department of Chemistry, University of Missouri-Columbia, Columbia, Missouri 65211, United States
| | - Steven P Kelley
- Department of Chemistry, University of Missouri-Columbia, Columbia, Missouri 65211, United States
| | - Michael Harmata
- Department of Chemistry, University of Missouri-Columbia, Columbia, Missouri 65211, United States
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5
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Zhang N, Jiang H, Ma Z. Concise Synthesis of (±)‐Myrioneurinol Enabled by Sequential [2+2] Cycloaddition/Retro‐Mannich Fragmentation/Mannich Reaction. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202200085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Nanping Zhang
- Key Lab of Functional Molecular Engineering of Guangdong Province School of Chemistry & Chemical Engineering South China University of Technology Wushan Road-381 Guangzhou 510641 P.R. China
| | - Huanfeng Jiang
- Key Lab of Functional Molecular Engineering of Guangdong Province School of Chemistry & Chemical Engineering South China University of Technology Wushan Road-381 Guangzhou 510641 P.R. China
| | - Zhiqiang Ma
- Key Lab of Functional Molecular Engineering of Guangdong Province School of Chemistry & Chemical Engineering South China University of Technology Wushan Road-381 Guangzhou 510641 P.R. China
- State Key Laboratory of Chemical Oncogenomics Guangdong Provincial Key Laboratory of Chemical Genomics Peking University Shenzhen Graduate School Shenzhen Guangdong 518055 P.R. China
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6
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Mu X, Li Y, Zheng N, Long J, Chen S, Liu B, Zhao C, Yang Z. Stereoselective Synthesis of Cyclohepta[
b
]indoles by Visible‐Light‐Induced [2+2]‐Cycloaddition/retro‐Mannich‐type Reactions. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202101104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Xin‐Peng Mu
- State Key Laboratory of Chemical Oncogenomics and Laboratory of Chemical Genomics School of Chemical Biology and Biotechnology Peking University Shenzhen Graduate School Shenzhen 518055 P. R. China
| | - Yuan‐He Li
- Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education and Beijing National Laboratory for Molecular Science (BNLMS) Peking-Tsinghua Center for Life Sciences Peking University Beijing 100871 P. R. China
| | - Nan Zheng
- State Key Laboratory of Chemical Oncogenomics and Laboratory of Chemical Genomics School of Chemical Biology and Biotechnology Peking University Shenzhen Graduate School Shenzhen 518055 P. R. China
| | - Jian‐Yu Long
- State Key Laboratory of Chemical Oncogenomics and Laboratory of Chemical Genomics School of Chemical Biology and Biotechnology Peking University Shenzhen Graduate School Shenzhen 518055 P. R. China
| | - Si‐Jia Chen
- State Key Laboratory of Chemical Oncogenomics and Laboratory of Chemical Genomics School of Chemical Biology and Biotechnology Peking University Shenzhen Graduate School Shenzhen 518055 P. R. China
| | - Bing‐Yan Liu
- State Key Laboratory of Chemical Oncogenomics and Laboratory of Chemical Genomics School of Chemical Biology and Biotechnology Peking University Shenzhen Graduate School Shenzhen 518055 P. R. China
| | - Chun‐Bo Zhao
- State Key Laboratory of Chemical Oncogenomics and Laboratory of Chemical Genomics School of Chemical Biology and Biotechnology Peking University Shenzhen Graduate School Shenzhen 518055 P. R. China
| | - Zhen Yang
- State Key Laboratory of Chemical Oncogenomics and Laboratory of Chemical Genomics School of Chemical Biology and Biotechnology Peking University Shenzhen Graduate School Shenzhen 518055 P. R. China
- Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education and Beijing National Laboratory for Molecular Science (BNLMS) Peking-Tsinghua Center for Life Sciences Peking University Beijing 100871 P. R. China
- Shenzhen Bay Laboratory Shenzhen 518055 P. R. China
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7
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Mu XP, Li YH, Zheng N, Long JY, Chen SJ, Liu BY, Zhao CB, Yang Z. Stereoselective Synthesis of Cyclohepta[b]indoles by Visible-Light-Induced [2+2]-Cycloaddition/retro-Mannich-type Reactions. Angew Chem Int Ed Engl 2021; 60:11211-11216. [PMID: 33683807 DOI: 10.1002/anie.202101104] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2021] [Revised: 02/27/2021] [Indexed: 12/12/2022]
Abstract
A novel method for the concise synthesis of cyclohepta[b]indoles in high yields was developed. The method involves a visible-light-induced, photocatalyzed [2+2]-cycloaddition/ retro-Mannich-type reaction of enaminones. Experimental and computational studies suggested that the reaction is a photoredox process initiated by single-electron oxidation of an enaminone moiety, which undergoes subsequent cyclobutane formation and rapidly fragmentation in a radical-cation state to form cyclohepta[b]indoles.
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Affiliation(s)
- Xin-Peng Mu
- State Key Laboratory of Chemical Oncogenomics and Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen, 518055, P. R. China
| | - Yuan-He Li
- Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education and Beijing National Laboratory for Molecular Science (BNLMS), Peking-Tsinghua Center for Life Sciences, Peking University, Beijing, 100871, P. R. China
| | - Nan Zheng
- State Key Laboratory of Chemical Oncogenomics and Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen, 518055, P. R. China
| | - Jian-Yu Long
- State Key Laboratory of Chemical Oncogenomics and Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen, 518055, P. R. China
| | - Si-Jia Chen
- State Key Laboratory of Chemical Oncogenomics and Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen, 518055, P. R. China
| | - Bing-Yan Liu
- State Key Laboratory of Chemical Oncogenomics and Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen, 518055, P. R. China
| | - Chun-Bo Zhao
- State Key Laboratory of Chemical Oncogenomics and Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen, 518055, P. R. China
| | - Zhen Yang
- State Key Laboratory of Chemical Oncogenomics and Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen, 518055, P. R. China.,Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education and Beijing National Laboratory for Molecular Science (BNLMS), Peking-Tsinghua Center for Life Sciences, Peking University, Beijing, 100871, P. R. China.,Shenzhen Bay Laboratory, Shenzhen, 518055, P. R. China
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8
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Luque A, Paternoga J, Opatz T. Strain Release Chemistry of Photogenerated Small-Ring Intermediates. Chemistry 2021; 27:4500-4516. [PMID: 33080091 PMCID: PMC7986234 DOI: 10.1002/chem.202004178] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Revised: 10/16/2020] [Indexed: 12/20/2022]
Abstract
Photochemical processes, such as isomerizations and cycloadditions, have proven to be very useful in the construction of highly strained molecular frameworks. Photoinduced ring strain enables subsequent exergonic reactions which do not require the input of additional chemical energy and provides a variety of attractive synthetic options leading to complex structures. This review covers the progress achieved in the application of sequences combining excitation by ultraviolet light to form strained intermediates, which are further transformed to lower energy products in strain-release reactions. As ring strain is considerable in small ring systems, photogenerated three- and four-membered rings will be covered, mainly focusing on examples from 2000 to May 2020.
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Affiliation(s)
- Adriana Luque
- Department of ChemistryJohannes Gutenberg UniversityDuesbergweg 10–1455128MainzGermany
| | - Jan Paternoga
- Department of ChemistryJohannes Gutenberg UniversityDuesbergweg 10–1455128MainzGermany
| | - Till Opatz
- Department of ChemistryJohannes Gutenberg UniversityDuesbergweg 10–1455128MainzGermany
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9
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Elliott LD, Kayal S, George MW, Booker-Milburn K. Rational Design of Triplet Sensitizers for the Transfer of Excited State Photochemistry from UV to Visible. J Am Chem Soc 2020; 142:14947-14956. [PMID: 32786778 DOI: 10.1021/jacs.0c05069] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Time Dependent Density Functional Theory has been used to assist the design and synthesis of a series thioxanthone triplet sensitizers. Calculated energies of the triplet excited state (ET) informed both the type and position of auxochromes placed on the thioxanthone core, enabling fine-tuning of the UV-vis absorptions and associated triplet energies. The calculated results were highly consistent with experimental observation in both the order of the λmax and ET values. The synthesized compounds were then evaluated for their efficacies as triplet sensitizers in a variety of UV and visible light preparative photochemical reactions. The results of this study exceeded expectations; in particular [2 + 2] cycloaddition chemistry that had previously been sensitized in the UV was found to undergo cycloaddition at 455 nm (blue) with a 2- to 9-fold increase in productivity (g/h) relative to input power. This study demonstrates the ability of powerful modern computational methods to aid in the design of successful and productive triplet sensitized photochemical reactions.
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Affiliation(s)
- Luke D Elliott
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, United Kingdom
| | - Surajit Kayal
- School of Chemistry, University of Nottingham, University Park,Nottingham NG7 2RD, United Kingdom
| | - Michael W George
- School of Chemistry, University of Nottingham, University Park,Nottingham NG7 2RD, United Kingdom.,Department of Chemical and Environmental Engineering, The University of Nottingham Ningbo China, Ningbo 315100, P. R. China
| | - Kevin Booker-Milburn
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, United Kingdom
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10
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Hu Z, Lin G, Sender M, Cannon KC, Davis FA, Krow GR. C6-Substituted methanopyrrolidine β-amino acid: synthesis and characterization of oligomeric foldamers. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.152240] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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11
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Xu Y, Sun Q, Tan T, Yang M, Yuan P, Wu S, Lu X, Hong X, Ye L. Organocatalytic Enantioselective Conia‐Ene‐Type Carbocyclization of Ynamide Cyclohexanones: Regiodivergent Synthesis of Morphans and Normorphans. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201908495] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Yin Xu
- State Key Laboratory of Physical Chemistry of Solid SurfacesKey Laboratory for Chemical Biology of Fujian Province, and College of Chemistry and Chemical EngineeringXiamen University Xiamen 361005 China
| | - Qing Sun
- State Key Laboratory of Physical Chemistry of Solid SurfacesKey Laboratory for Theoretical and Computational Chemistry of Fujian Province, and College of Chemistry and Chemical EngineeringXiamen University Xiamen 361005 China
| | - Tong‐De Tan
- State Key Laboratory of Physical Chemistry of Solid SurfacesKey Laboratory for Chemical Biology of Fujian Province, and College of Chemistry and Chemical EngineeringXiamen University Xiamen 361005 China
| | - Ming‐Yang Yang
- State Key Laboratory of Physical Chemistry of Solid SurfacesKey Laboratory for Chemical Biology of Fujian Province, and College of Chemistry and Chemical EngineeringXiamen University Xiamen 361005 China
| | - Peng Yuan
- State Key Laboratory of Physical Chemistry of Solid SurfacesKey Laboratory for Chemical Biology of Fujian Province, and College of Chemistry and Chemical EngineeringXiamen University Xiamen 361005 China
| | - Shao‐Qi Wu
- Department of ChemistryZhejiang University Hangzhou 310027 China
| | - Xin Lu
- State Key Laboratory of Physical Chemistry of Solid SurfacesKey Laboratory for Theoretical and Computational Chemistry of Fujian Province, and College of Chemistry and Chemical EngineeringXiamen University Xiamen 361005 China
| | - Xin Hong
- Department of ChemistryZhejiang University Hangzhou 310027 China
| | - Long‐Wu Ye
- State Key Laboratory of Physical Chemistry of Solid SurfacesKey Laboratory for Chemical Biology of Fujian Province, and College of Chemistry and Chemical EngineeringXiamen University Xiamen 361005 China
- State Key Laboratory of Organometallic ChemistryShanghai Institute of Organic ChemistryChinese Academy of Sciences Shanghai 200032 China
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12
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Xu Y, Sun Q, Tan TD, Yang MY, Yuan P, Wu SQ, Lu X, Hong X, Ye LW. Organocatalytic Enantioselective Conia-Ene-Type Carbocyclization of Ynamide Cyclohexanones: Regiodivergent Synthesis of Morphans and Normorphans. Angew Chem Int Ed Engl 2019; 58:16252-16259. [PMID: 31444882 DOI: 10.1002/anie.201908495] [Citation(s) in RCA: 62] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Revised: 08/07/2019] [Indexed: 12/13/2022]
Abstract
Described herein is an organocatalytic enantioselective desymmetrizing cycloisomerization of arylsulfonyl-protected ynamide cyclohexanones, representing the first metal-free asymmetric Conia-ene-type carbocyclization. This method allows the highly efficient and atom-economical construction of a range of valuable morphans with wide substrate scope and excellent enantioselectivity (up to 97 % ee). In addition, such a cycloisomerization of alkylsulfonyl-protected ynamide cyclohexanones can lead to the divergent synthesis of normorphans as the main products with high enantioselectivity (up to 90 % ee). Moreover, theoretical calculations are employed to elucidate the origins of regioselectivity and enantioselectivity.
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Affiliation(s)
- Yin Xu
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory for Chemical Biology of Fujian Province, and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Qing Sun
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory for Theoretical and Computational Chemistry of Fujian Province, and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Tong-De Tan
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory for Chemical Biology of Fujian Province, and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Ming-Yang Yang
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory for Chemical Biology of Fujian Province, and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Peng Yuan
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory for Chemical Biology of Fujian Province, and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Shao-Qi Wu
- Department of Chemistry, Zhejiang University, Hangzhou, 310027, China
| | - Xin Lu
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory for Theoretical and Computational Chemistry of Fujian Province, and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Xin Hong
- Department of Chemistry, Zhejiang University, Hangzhou, 310027, China
| | - Long-Wu Ye
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory for Chemical Biology of Fujian Province, and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China.,State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, 200032, China
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13
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Levterov VV, Michurin O, Borysko PO, Zozulya S, Sadkova IV, Tolmachev AA, Mykhailiuk PK. Photochemical In-Flow Synthesis of 2,4-Methanopyrrolidines: Pyrrolidine Analogues with Improved Water Solubility and Reduced Lipophilicity. J Org Chem 2018; 83:14350-14361. [PMID: 30358395 DOI: 10.1021/acs.joc.8b02071] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
A practical synthesis of 2,4-methanopyrrolidines was elaborated. The key synthetic step was an intramolecular photochemical [2 + 2]-cycloaddition of an acrylic acid derivative in flow. In spite of a higher molecular weight, 2,4-methanopyrrolidines were shown to have higher solubility in water and lower lipophilicity than pyrrolidines, important characteristics of bioactive molecules in drug design.
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Affiliation(s)
- Vadym V Levterov
- Enamine, Ltd. , Chervonotkatska 78 , Kyiv 02094 , Ukraine (www.enamine.net)
| | - Oleg Michurin
- Enamine, Ltd. , Chervonotkatska 78 , Kyiv 02094 , Ukraine (www.enamine.net)
| | - Petro O Borysko
- Bienta, Chervonotkatska 78 , Kyiv 02094 , Ukraine (www.bienta.net)
| | - Sergey Zozulya
- Bienta, Chervonotkatska 78 , Kyiv 02094 , Ukraine (www.bienta.net)
| | - Iryna V Sadkova
- Enamine, Ltd. , Chervonotkatska 78 , Kyiv 02094 , Ukraine (www.enamine.net)
| | - Andrey A Tolmachev
- Enamine, Ltd. , Chervonotkatska 78 , Kyiv 02094 , Ukraine (www.enamine.net).,Department of Chemistry , Taras Shevchenko National University of Kyiv , Volodymyrska 64 , Kyiv 01601 , Ukraine (www.mykhailiukchem.org)
| | - Pavel K Mykhailiuk
- Enamine, Ltd. , Chervonotkatska 78 , Kyiv 02094 , Ukraine (www.enamine.net).,Department of Chemistry , Taras Shevchenko National University of Kyiv , Volodymyrska 64 , Kyiv 01601 , Ukraine (www.mykhailiukchem.org)
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14
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Yeh MCP, Chang YM, Lin HH. Stereoselective Synthesis of 7-(E
)-Arylidene-2-chloro-6-azabicyclo[3.2.1]octanes via
Aluminum Chloride-Promoted Cyclization/Chlorination of Six-Membered Ring 3-Enynamides. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201700271] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Ming-Chang P. Yeh
- Department of Chemistry; National Taiwan Normal University; 88 Ding-Jou Road, Sec. 4 Taipei 11677 Taiwan, R.O.C
| | - Yi-Mei Chang
- Department of Chemistry; National Taiwan Normal University; 88 Ding-Jou Road, Sec. 4 Taipei 11677 Taiwan, R.O.C
| | - Hsin-Hui Lin
- Department of Chemistry; National Taiwan Normal University; 88 Ding-Jou Road, Sec. 4 Taipei 11677 Taiwan, R.O.C
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15
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Hovenkotter K, Braunstein H, Langevin S, Beng TK. Expedient and modular access to 2-azabicyclic architectures by iron-catalyzed dehydrative coupling of alcohol-bearing allylic lactams. Org Biomol Chem 2017; 15:1217-1221. [DOI: 10.1039/c6ob02652d] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A high-yielding, cost-effective, modular and environmentally benign approach to [5,5]- or [6,5]-2-azabicyclic architectures bearing vicinal stereocenters, by Fe-catalyzed dehydrative coupling of readily affordable alcohol-bearing allylic lactams is presented.
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Affiliation(s)
| | | | - Spencer Langevin
- Department of Chemistry
- Central Washington University
- Ellensburg
- USA
| | - Timothy K. Beng
- Department of Chemistry
- Central Washington University
- Ellensburg
- USA
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16
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Kärkäs M, Porco JA, Stephenson CRJ. Photochemical Approaches to Complex Chemotypes: Applications in Natural Product Synthesis. Chem Rev 2016; 116:9683-747. [PMID: 27120289 PMCID: PMC5025835 DOI: 10.1021/acs.chemrev.5b00760] [Citation(s) in RCA: 665] [Impact Index Per Article: 83.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2015] [Indexed: 01/29/2023]
Abstract
The use of photochemical transformations is a powerful strategy that allows for the formation of a high degree of molecular complexity from relatively simple building blocks in a single step. A central feature of all light-promoted transformations is the involvement of electronically excited states, generated upon absorption of photons. This produces transient reactive intermediates and significantly alters the reactivity of a chemical compound. The input of energy provided by light thus offers a means to produce strained and unique target compounds that cannot be assembled using thermal protocols. This review aims at highlighting photochemical transformations as a tool for rapidly accessing structurally and stereochemically diverse scaffolds. Synthetic designs based on photochemical transformations have the potential to afford complex polycyclic carbon skeletons with impressive efficiency, which are of high value in total synthesis.
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Affiliation(s)
- Markus
D. Kärkäs
- Department
of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109, United States
| | - John A. Porco
- Department
of Chemistry, Center for Molecular Discovery (BU-CMD), Boston University, 590 Commonwealth Avenue, Boston, Massachusetts 02215, United States
| | - Corey R. J. Stephenson
- Department
of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109, United States
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17
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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: 649] [Impact Index Per Article: 81.1] [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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18
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Tang DH, Ma D, Cheng H, Li YL, Xu L. A bio-inspired synthetic route to the core ring systems of Spiraea atisine-type diterpenoid alkaloids and related diterpenes. Org Biomol Chem 2016; 14:2716-22. [PMID: 26837236 DOI: 10.1039/c6ob00053c] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A bio-inspired synthetic strategy for the construction of the complex substructures of biologically active atisine-type diterpenoid alkaloids and related diterpenes was successfully developed.
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Affiliation(s)
- Dai-Hui Tang
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education
- West China School of Pharmacy
- Sichuan University
- Chengdu 610041
- P. R. China
| | - Ding Ma
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education
- West China School of Pharmacy
- Sichuan University
- Chengdu 610041
- P. R. China
| | - Hang Cheng
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education
- West China School of Pharmacy
- Sichuan University
- Chengdu 610041
- P. R. China
| | - Yong-Li Li
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education
- West China School of Pharmacy
- Sichuan University
- Chengdu 610041
- P. R. China
| | - Liang Xu
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education
- West China School of Pharmacy
- Sichuan University
- Chengdu 610041
- P. R. China
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19
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Krow GR, Gandla D, Cannon KC, Ross CW, Carroll PJ. C1-Substituted N-tert-butoxycarbonyl-5-syn-tert-butyldimethylsilyloxymethyl-2-azabicyclo[2.1.1]hexanes as conformationally constrained β-amino acid precursors. HETEROCYCL COMMUN 2016. [DOI: 10.1515/hc-2016-0046] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
AbstractRegioselective introduction and transformation of substituents at the C
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20
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Shi S, Szostak M. Aminoketyl Radicals in Organic Synthesis: Stereoselective Cyclization of Five- and Six-Membered Cyclic Imides to 2-Azabicycles Using SmI2–H2O. Org Lett 2015; 17:5144-7. [DOI: 10.1021/acs.orglett.5b02732] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Shicheng Shi
- Department
of Chemistry, Rutgers University, 73 Warren Street, Newark, New Jersey 07102, United States
| | - Michal Szostak
- Department
of Chemistry, Rutgers University, 73 Warren Street, Newark, New Jersey 07102, United States
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21
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Betou M, Male L, Steed JW, Grainger RS. Carbamoyl radical-mediated synthesis and semipinacol rearrangement of β-lactam diols. Chemistry 2014; 20:6505-17. [PMID: 24711140 PMCID: PMC4320754 DOI: 10.1002/chem.201304982] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2013] [Revised: 02/21/2014] [Indexed: 11/08/2022]
Abstract
In an approach to the biologically important 6-azabicyclo[3.2.1]octane ring system, the scope of the tandem 4-exo-trig carbamoyl radical cyclization-dithiocarbamate group transfer reaction to ring-fused β-lactams is evaluated. β-Lactams fused to five-, six-, and seven-membered rings are prepared in good to excellent yield, and with moderate to complete control at the newly formed dithiocarbamate stereocentre. No cyclization is observed with an additional methyl substituent on the terminus of the double bond. Elimination of the dithiocarbamate group gives α,β- or β,γ-unsaturated lactams depending on both the methodology employed (base-mediated or thermal) and the nature of the carbocycle fused to the β-lactam. Fused β-lactam diols, obtained from catalytic OsO4-mediated dihydroxylation of α,β-unsaturated β-lactams, undergo semipinacol rearrangement via the corresponding cyclic sulfite or phosphorane to give keto-bridged bicyclic amides by exclusive N-acyl group migration. A monocyclic β-lactam diol undergoes Appel reaction at a primary alcohol in preference to semipinacol rearrangement. Preliminary investigations into the chemo- and stereoselective manipulation of the two carbonyl groups present in a representative 7,8-dioxo-6-azabicyclo[3.2.1]octane rearrangement product are also reported.
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Affiliation(s)
- Marie Betou
- School of Chemistry, University of BirminghamEdgbaston, Birmingham B15 2TT (UK)
| | - Louise Male
- School of Chemistry, University of BirminghamEdgbaston, Birmingham B15 2TT (UK)
| | - Jonathan W Steed
- Department of Chemistry, Durham UniversitySouth Road, Durham DH1 3LE (UK)
| | - Richard S Grainger
- School of Chemistry, University of BirminghamEdgbaston, Birmingham B15 2TT (UK)
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22
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Chen K, Zhu ZZ, Zhang YS, Tang XY, Shi M. Rhodium(II)-Catalyzed Intramolecular Cycloisomerizations of Methylenecyclopropanes withN-Sulfonyl 1,2,3-Triazoles. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201402803] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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23
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Chen K, Zhu ZZ, Zhang YS, Tang XY, Shi M. Rhodium(II)-catalyzed intramolecular cycloisomerizations of methylenecyclopropanes with N-sulfonyl 1,2,3-triazoles. Angew Chem Int Ed Engl 2014; 53:6645-9. [PMID: 24839200 DOI: 10.1002/anie.201402803] [Citation(s) in RCA: 112] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2014] [Revised: 04/14/2014] [Indexed: 11/09/2022]
Abstract
A novel rhodium(II)-catalyzed tandem cycloisomerization of methylenecyclopropanes (MCPs) with N-sulfonyl 1,2,3-triazoles is disclosed. The reaction produces a series of highly functionalized polycyclic N heterocycles via a rhodium imino carbene intermediate. A distinct feature of this divergent synthesis is that different types of substrates control the reaction pathways. Moreover, several interesting transformations of these products to construct diazabicyclo[3.2.1]octane derivatives are also reported.
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Affiliation(s)
- Kai Chen
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, East China University of Science and Technology, Meilong Road No. 130, Shanghai, 200237 (China)
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24
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Hamlin AM, Kisunzu JK, Sarpong R. Synthetic strategies toward hetidine and hetisine-type diterpenoid alkaloids. Org Biomol Chem 2014; 12:1846-60. [DOI: 10.1039/c3ob42541j] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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25
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Hong BC, Chen SH, Kumar ES, Lee GH, Lin KJ. Intramolecular [2+2] Photocycloaddition-Fragmentation: Facile Entry to a Novel Tricyclic 5-6-7 Ring System. J CHIN CHEM SOC-TAIP 2013. [DOI: 10.1002/jccs.200300129] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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26
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Hamlin AM, de Jesus Cortez F, Lapointe D, Sarpong R. Gallium(III)-Catalyzed Cycloisomerization Approach to the Diterpenoid Alkaloids: Construction of the Core Structure for the Hetidines and Hetisines. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201209030] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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27
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Hamlin AM, Cortez FDJ, Lapointe D, Sarpong R. Gallium(III)-catalyzed cycloisomerization approach to the diterpenoid alkaloids: construction of the core structure for the hetidines and hetisines. Angew Chem Int Ed Engl 2013; 52:4854-7. [PMID: 23533012 DOI: 10.1002/anie.201209030] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2012] [Revised: 01/11/2012] [Indexed: 11/06/2022]
Affiliation(s)
- Amy M Hamlin
- Department of Chemistry, University of California, Berkeley, Berkeley, CA 94720, USA
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28
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Krow GR, Yu F, Sender M, Gandla D, Lin G, DeBrosse C, Ross CW. Introduction of C(5/6) side chains onto 2-azabicyclo[2.1.1]hexanes via a 6-anti-bromo-5-anti-hydroxy derivative. CAN J CHEM 2012. [DOI: 10.1139/v11-112] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Oxidation of the title bromoalcohol provided the strained ketone, 5-bromo-6-oxo-2-azabicyclo[2.1.1]hexane. Additions of nucleophiles to either this or the debrominated ketone have been used to introduce 5(6)-syn-alkyl and aryl groups, 5(6)-alkylidene linkages, and 5(6)-anti-alkyl and acyl substituents. Facial selectivity is for additions to the 6-bromo-5-ketone and 5-alkylidene azabicycles to occur from the face syn to the nitrogen atom. The bromine atom of the title alcohol has also been replaced by a 6-anti-(1-hydroxyethyl) substituent using a directed radical addition process. The stereoselective functionalization reactions expand the range of available methano-bridged pyrrolidines.
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Affiliation(s)
- Grant R. Krow
- Department of Chemistry, Temple University, Philadelphia, PA 19122, USA
| | - Fang Yu
- Department of Chemistry, Temple University, Philadelphia, PA 19122, USA
| | - Matthew Sender
- Department of Chemistry, Temple University, Philadelphia, PA 19122, USA
| | - Deepa Gandla
- Department of Chemistry, Temple University, Philadelphia, PA 19122, USA
| | - Guoliang Lin
- Department of Chemistry, Temple University, Philadelphia, PA 19122, USA
| | - Charles DeBrosse
- Department of Chemistry, Temple University, Philadelphia, PA 19122, USA
| | - Charles W. Ross
- Department of Medicinal Chemistry, Merck Research Laboratories, Merck & Co., Inc., West Point, PA 19486-004, USA
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29
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Grygorenko OO, Radchenko DS, Volochnyuk DM, Tolmachev AA, Komarov IV. Bicyclic Conformationally Restricted Diamines. Chem Rev 2011; 111:5506-68. [DOI: 10.1021/cr100352k] [Citation(s) in RCA: 80] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Oleksandr O. Grygorenko
- Kyiv National Taras Shevchenko University, Volodymyrska Street, 64, Kyiv 01601, Ukraine
- Enamine Ltd., Alexandra Matrosova Street, 23, Kyiv 01103, Ukraine
| | - Dmytro S. Radchenko
- Kyiv National Taras Shevchenko University, Volodymyrska Street, 64, Kyiv 01601, Ukraine
- Enamine Ltd., Alexandra Matrosova Street, 23, Kyiv 01103, Ukraine
| | | | - Andrey A. Tolmachev
- Kyiv National Taras Shevchenko University, Volodymyrska Street, 64, Kyiv 01601, Ukraine
- Enamine Ltd., Alexandra Matrosova Street, 23, Kyiv 01103, Ukraine
| | - Igor V. Komarov
- Kyiv National Taras Shevchenko University, Volodymyrska Street, 64, Kyiv 01601, Ukraine
- Enamine Ltd., Alexandra Matrosova Street, 23, Kyiv 01103, Ukraine
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30
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Xu X, Li Y, Zhang Y, Zhang L, Pan L, Liu Q. Direct Synthesis of 6-Azabicyclo[3.2.1]oct-6-en-2-ones and Pyrrolizidines from Divinyl Ketones and Observation of Remarkable Substituent Effects. Adv Synth Catal 2011. [DOI: 10.1002/adsc.201000880] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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31
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Abstract
The lasting attention that researchers have devoted to diterpenoid alkaloids is due to their various bioactivities and toxicities, structural complexity, and intriguing chemistry. From 1998 to the end of 2008, more than 300 new diterpenoid alkaloids were isolated from Nature. This review focuses on their structural relationships, and investigations into their chemical reactions, synthesis, and biological activities. A table that lists the names, plant sources, and structural types is given along with 363 references.
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Affiliation(s)
- Feng-Peng Wang
- Department of Chemistry of Medicinal Natural Products, West China College of Pharmacy, Sichuan University, Chengdu, 610041, P. R. China.
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32
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Chen P, Carroll PJ, Sieburth SM. 3-4'-Bipiperidines via sequential [4 + 4]-[3,3]-retro-Mannich reactions. Org Lett 2009; 11:4540-3. [PMID: 19746913 DOI: 10.1021/ol901743p] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
An approach to assembling unsymmetrically coupled piperidines is described, involving initial [4 + 4] photocycloaddition of 2-pyridones, followed by Cope rearrangement and retro-Mannich reaction. In these reactions, four stereogenic centers set during cycloaddition are relayed or erased during the subsequent steps. Two methods for retro-Mannich reaction are demonstrated.
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Affiliation(s)
- Peiling Chen
- Department of Chemistry, Temple University, 1901 North 13th Street, Philadelphia, Pennsylvania 19122, USA
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33
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Mihara Y, Matsumura T, Terauchi Y, Akiba M, Arai S, Nishida A. Asymmetric Synthesis of Hydroisoquinoline Derivatives, a Key Intermediate for Manzamine Synthesis, by Diels–Alder Reaction Using 4-Amino-2-siloxybutadiene. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2009. [DOI: 10.1246/bcsj.82.1520] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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34
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Krow GR, Edupuganti R, Gandla D, Choudhary A, Lin G, Sonnet PE, DeBrosse C, Ross CW, Cannon KC, Raines RT. 5(6)-anti-Substituted-2-azabicyclo[2.1.1]hexanes: a nucleophilic displacement route. J Org Chem 2009; 74:8232-42. [PMID: 19799411 PMCID: PMC3374851 DOI: 10.1021/jo901725k] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Nucleophilic displacements of 5(6)-anti-bromo substituents in 2-azabicyclo[2.1.1]hexanes (methanopyrrolidines) have been accomplished. These displacements have produced 5-anti-X-6-anti-Y-difunctionalized-2-azabicyclo[2.1.1]hexanes containing bromo, fluoro, acetoxy, hydroxy, azido, imidazole, thiophenyl, and iodo substituents. Such displacements of anti-bromide ions require an amine nitrogen and are a function of the solvent and the choice of metal salt. Reaction rates were faster and product yields were higher in DMSO when compared to DMF and with CsOAc compared to NaOAc. Sodium or lithium salts gave products, except with NaF, where silver fluoride in nitromethane was best for substitution by fluoride. The presence of electron-withdrawing F, OAc, N(3), Br, or SPh substituents in the 6-anti-position slows bromide displacements at the 5-anti-position.
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Affiliation(s)
- Grant R Krow
- Department of Chemistry, Temple University, Philadelphia, Pennsylvania 19122, USA.
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35
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Sergeiko A, Poroikov VV, Hanuš LO, Dembitsky VM. Cyclobutane-containing alkaloids: origin, synthesis, and biological activities. THE OPEN MEDICINAL CHEMISTRY JOURNAL 2008; 2:26-37. [PMID: 19696873 PMCID: PMC2709475 DOI: 10.2174/1874104500802010026] [Citation(s) in RCA: 105] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/06/2008] [Revised: 03/18/2008] [Accepted: 03/18/2008] [Indexed: 11/22/2022]
Abstract
Present review describes research on novel natural cyclobutane-containing alkaloids isolated from terrestrial and marine species. More than 60 biological active compounds have been confirmed to have antimicrobial, antibacterial, antitumor, and other activities. The structures, synthesis, origins, and biological activities of a selection of cyclobutane-containing alkaloids are reviewed. With the computer program PASS some additional biological activities are also predicted, which point toward new possible applications of these compounds. This review emphasizes the role of cyclobutane-containing alkaloids as an important source of leads for drug discovery.
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Affiliation(s)
- Anastasia Sergeiko
- Institute of Biomedical Chemistry, Russian Academy of the Medical Sciences, Moscow 119121, Russia
| | - Vladimir V Poroikov
- Institute of Biomedical Chemistry, Russian Academy of the Medical Sciences, Moscow 119121, Russia
| | - Lumir O Hanuš
- Department of Medicinal Chemistry and Natural Products, School of Pharmacy, P.O. Box 12065, The Hebrew University of Jerusalem, Jerusalem 91120, Israel
| | - Valery M Dembitsky
- Department of Medicinal Chemistry and Natural Products, School of Pharmacy, P.O. Box 12065, The Hebrew University of Jerusalem, Jerusalem 91120, Israel
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36
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Abstract
A dual cycloaddition strategy for the synthesis of the hetisine alkaloids has been developed, illustrated by a concise asymmetric total synthesis of (+)-nominine (7). The approach relies on an early-stage intramolecular 1,3-dipolar cycloaddition of a 4-oxido-isoquinolinium betaine dipole with an ene-nitrile dipolarophile. Subsequent late-stage pyrrolidine-induced dienamine isomerization/Diels-Alder cascade allows for rapid construction of the carbon--nitrogen polycyclic skeleton within this class of C(20)-diterpenoid alkaloids.
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Affiliation(s)
- Kevin M. Peese
- Department of Chemistry, University of Illinois Urbana, IL 61801 (USA)
| | - David Y. Gin
- Memorial Sloan-Kettering Cancer Center 1275 York Avenue, New York, NY 10065 (USA), Fax: (+1)646-422-0416, E-mail:
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37
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Affiliation(s)
- Jone Iriondo‐Alberdi
- School of Chemistry, University of Edinburgh, King's Buildings, West Mains Rd, Edinburgh, EH9 3JJ, UK, Fax: +44‐131‐650‐4743
| | - Michael F. Greaney
- School of Chemistry, University of Edinburgh, King's Buildings, West Mains Rd, Edinburgh, EH9 3JJ, UK, Fax: +44‐131‐650‐4743
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38
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Ragains JR, Winkler JD. Pseudosymmetry in Azabicyclo[2.1.1]hexanes. A Stereoselective Construction of the Bicyclic Core of Peduncularine. Org Lett 2006; 8:4437-40. [PMID: 16986919 DOI: 10.1021/ol061577+] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Intramolecular photocycloaddition of 41 or its equivalent leads to the formation of photoadduct 25. While retro-Mannich fragmentation of the "b" bond in 25 leads to the formation of 44 (via 43), with the incorrect relative stereochemistry for the synthesis of peduncularine 5, selective fragmentation of the "a" bond in 25 leads to the formation of 42 (via 26) with the correct relative stereochemistry for the synthesis of 5.
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Affiliation(s)
- Justin R Ragains
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
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39
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Peese KM, Gin DY. Efficient synthetic access to the hetisine C20-diterpenoid alkaloids. A concise synthesis of nominine via oxidoisoquinolinium-1,3-dipolar and dienamine-Diels-Alder cycloadditions. J Am Chem Soc 2006; 128:8734-5. [PMID: 16819859 PMCID: PMC2610465 DOI: 10.1021/ja0625430] [Citation(s) in RCA: 83] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A concise synthetic approach to the hetisine C20-diterpenoid alkaloids is reported. The total synthesis of (+/-)-nominine was accomplished in a 15-step sequence employing a dual cycloaddition strategy. Key features of the synthesis include a reversible intramolecular 4-oxidoisoquinolinium betaine dipolar cycloaddition in conjunction with a pyrrolidine-induced dienamine isomerization/Diels-Alder cascade.
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Affiliation(s)
- Kevin M. Peese
- Department of Chemistry, University of Illinois, Urbana, Illinois 61801
| | - David Y. Gin
- Department of Chemistry, University of Illinois, Urbana, Illinois 61801
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40
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Muratake H, Natsume M. Synthetic study of hetisine-type aconite alkaloids. Part 1: Preparation of tetracyclic intermediate containing the C14–C20 bond. Tetrahedron 2006. [DOI: 10.1016/j.tet.2006.04.084] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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41
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Muratake H, Natsume M. Synthetic study of hetisine-type aconite alkaloids. Part 2: Preparation of hexacyclic compound lacking the C-ring of the hetisan skeleton. Tetrahedron 2006. [DOI: 10.1016/j.tet.2006.04.085] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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42
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Krow GR, Huang Q, Lin G, Centafont RA, Thomas AM, Gandla D, Debrosse C, Carroll PJ. 5-Carboxy-2-azabicyclo[2.1.1]hexanes as Precursors of 5-Halo, Amino, Phenyl, and 2-Methoxycarbonylethyl Methanopyrrolidines. J Org Chem 2006; 71:2090-8. [PMID: 16496997 DOI: 10.1021/jo052506b] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Novel 5-X-substituted-2-azabicyclo[2.1.1]hexanes (X = 5-syn-Cl, -Br, -I, -Ph, -NHCOOR (R = Me, Bn, t-Bu), -CH2CH2COOMe and X = 5-anti-Br, -I, -Ph) were synthesized from the X = 5-syn-carboxy derivative. New 5-anti-X-2-azabicyclo[2.1.1]hexanes, X = NHCOOR (R = Me, Bn), were prepared stereoselectively from the X = 5-anti-carboxy substrate.
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Affiliation(s)
- Grant R Krow
- Department of Chemistry, Temple University, Philadelphia, Pennsylvania 19122, USA.
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Peese KM, Gin DY. Enantioselective approach to the hetisine alkaloids. Synthesis of the 3-methyl-1-aza-tricyclo[5.2.1.0(3,8)]decane core via intramolecular dipolar cycloaddition. Org Lett 2005; 7:3323-5. [PMID: 16018651 PMCID: PMC2593868 DOI: 10.1021/ol051184v] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
[structure: see text]. An efficient, enantioselective approach to the hetisine class of the C(20)-diterpenoid alkaloids is described. The strategy involves an intramolecular oxidopyridinium dipolar cycloaddition as the key transformation, in which simultaneous formation of the C5-C6 and C10-C20 bonds in the 3-methyl-1-aza-tricyclo[5.2.1.0(3,8)]decane core of the hetisine alkaloids is effected.
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Affiliation(s)
- Kevin M. Peese
- Department of Chemistry, University of Illinois, Urbana, IL 61801
| | - David Y. Gin
- Department of Chemistry, University of Illinois, Urbana, IL 61801
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Williams CM, Mander LN, Bernhardt PV, Willis AC. Investigating direct routes to an advanced intermediate for the synthesis of C-20 diterpene alkaloids. Tetrahedron 2005. [DOI: 10.1016/j.tet.2005.02.014] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Ken Lee CL, Ling HY, Loh TP. Asymmetric Synthesis of C-Aliphatic Homoallylic Amines and Biologically Important Cyclohexenylamine Analogues. J Org Chem 2004; 69:7787-9. [PMID: 15498019 DOI: 10.1021/jo048903o] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
An efficient method for the asymmetric synthesis of C-aliphatic homoallylic amines with up to 94% yield and 80% de is reported. Ring-closing metathesis of several chiral homoallylic amines using the second-generation Grubbs catalyst provided easy access to a wide variety of cyclohexenylamines.
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Affiliation(s)
- Chi-Lik Ken Lee
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543
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Krow GR, Lin G, Herzon SB, Thomas AM, Moore KP, Huang Q, Carroll PJ. Convenient preparations of 2,4-methanopyrrolidine and 5-carboxy-2,4-methanopyrrolidines. J Org Chem 2003; 68:7562-4. [PMID: 12968923 DOI: 10.1021/jo0348672] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
An efficient four-step synthesis of N-BOC-5-syn- and 5-anti-carboxymethanopyrrolidines (12 and 13) and the conversion of 12 to N-BOC-methanopyrrolidine (2) are described.
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Affiliation(s)
- Grant R Krow
- Department of Chemistry, Temple University, Philadelphia, Pennsylvania, 19122, USA.
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Krow GR, Lin G, Rapolu D, Fang Y, Lester WS, Herzon SB, Sonnet PE. The rearrangement route to 2-azabicyclo[2.1.1]hexanes. Solvent and electrophile control of neighboring group participation. J Org Chem 2003; 68:5292-9. [PMID: 12816491 DOI: 10.1021/jo034394z] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The reactions of N-(alkoxycarbonyl)-2-azabicyclo[2.2.0]hex-5-enes 5 with halonium ion electrophiles were studied in polar and nonpolar aprotic solvents and also in protic media with the aim of controlling nitrogen neighboring group participation. Specifically, for bromonium ions nitrogen participation is facilitated by the polar aprotic solvent nitromethane and by the poorly nucleophilic protic solvent acetic acid. Alkene 5b and bromine/nitromethane afford only the rearranged anti,anti-5,6-dibromo-2-azabicyclo[2.1.1]hexane 6b, and NBS/acetic acid gives an 8:1 mixture favoring rearranged 5-bromo-6-acetate 6f. Conversely, pyridinium bromide perbromide/CH(2)Cl(2) is selective for only unrearranged 5,6-dibromide 7. Iodonium and phenylselenonium ions react with alkenes 5 to give only unrearranged 1,2-addition products 9 and 10, regardless of solvent. Chloronium and fluoronium ions react with alkenes 5 to give 4-aminomethyl-3-hydroxycyclobutene 11, derived by ring cleavage.
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Affiliation(s)
- Grant R Krow
- Department of Chemistry, Temple University, Philadelphia, Pennsylvania 19122, USA.
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Multi-component coupling reactions of aldehydes and amides with maleic anhydride: synthesis of 7-oxo-6-azabicyclo[3.2.1]oct-2-ene-8-carboxylic acids. Tetrahedron 2002. [DOI: 10.1016/s0040-4020(02)00116-3] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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