1
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Eckl R, Fischer S, Sonnleitner CM, Schmidhuber D, Rehbein J, Reiser O. Stereoselective Synthesis of Biologically Relevant Tetrahydropyridines and Dihydro-2 H-pyrans via Ring-Expansion of Monocyclopropanated Heterocycles. ACS ORGANIC & INORGANIC AU 2021; 2:169-174. [PMID: 36855453 PMCID: PMC9954292 DOI: 10.1021/acsorginorgau.1c00042] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
A stereoselective, scalable, and metal-free ring-expansion of monocyclopropanated pyrroles and furans has been developed, leading to value-added highly functionalized tetrahydropyridine and dihydro-2H-pyran derivatives. Featuring a cyclopropylcarbinyl cation rearrangement as the key step, the selective cleavage of the unactivated endocyclic cyclopropane C-C bond is achieved. Targeted transformations of the thus obtained six-membered heterocycles give access to versatile building blocks with relevance for drug synthesis.
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2
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Bartolo ND, Read JA, Valentín EM, Woerpel KA. Reactions of Allylmagnesium Reagents with Carbonyl Compounds and Compounds with C═N Double Bonds: Their Diastereoselectivities Generally Cannot Be Analyzed Using the Felkin-Anh and Chelation-Control Models. Chem Rev 2020; 120:1513-1619. [PMID: 31904936 PMCID: PMC7018623 DOI: 10.1021/acs.chemrev.9b00414] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
This review describes the additions of allylmagnesium reagents to carbonyl compounds and to imines, focusing on the differences in reactivity between allylmagnesium halides and other Grignard reagents. In many cases, allylmagnesium reagents either react with low stereoselectivity when other Grignard reagents react with high selectivity, or allylmagnesium reagents react with the opposite stereoselectivity. This review collects hundreds of examples, discusses the origins of stereoselectivities or the lack of stereoselectivity, and evaluates why selectivity may not occur and when it will likely occur.
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Affiliation(s)
- Nicole D. Bartolo
- Department of Chemistry, New York University, 100
Washington Square East, New York, NY 10003, USA
| | - Jacquelyne A. Read
- Department of Chemistry, New York University, 100
Washington Square East, New York, NY 10003, USA
- Department of Chemistry, University of Utah, 315 South 1400
East, Salt Lake City, UT 84112, USA
| | - Elizabeth M. Valentín
- Department of Chemistry, New York University, 100
Washington Square East, New York, NY 10003, USA
- Department of Chemistry, Susquehanna University, 514
University Avenue, Selinsgrove, PA 17870, USA
| | - K. A. Woerpel
- Department of Chemistry, New York University, 100
Washington Square East, New York, NY 10003, USA
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3
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Tian L, Krauss IJ. Stereoselective Homocrotylation of Aldehydes: Enantioselective Synthesis of Allylic-Substituted Z/ E-Alkenes. Org Lett 2018; 20:6730-6735. [PMID: 30350633 DOI: 10.1021/acs.orglett.8b02837] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Cyclopropanated allyl- and crotylboron reagents participate in homoallylation and homocrotylation reactions that enable enantioselective access to motifs that otherwise require many steps to synthesize. In this study, we investigated the effect of substituents α- to boron, predicted either to counteract or reinforce the 1,3- selectivity of the parent reagents. We then investigated the transformation of the substituted homocrotylation products in intramolecular photocycloadditions to produce stereochemically complex natural-product-like scaffolds, finding that flow conditions enhanced the regioselectivity and yield.
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Affiliation(s)
- Leiming Tian
- Department of Chemistry , Brandeis University , MS 015 , Waltham , Massachusetts 02454-9110 , United States
| | - Isaac J Krauss
- Department of Chemistry , Brandeis University , MS 015 , Waltham , Massachusetts 02454-9110 , United States
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4
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Sun TW, Liu DD, Wang KY, Tong BQ, Xie JX, Jiang YL, Li Y, Zhang B, Liu YF, Wang YX, Zhang JJ, Chen JH, Yang Z. Asymmetric Total Synthesis of Lancifodilactone G Acetate. 1. Diastereoselective Synthesis of CDEFGH Ring System. J Org Chem 2018; 83:6893-6906. [DOI: 10.1021/acs.joc.7b02915] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Tian-Wen Sun
- State Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education and Beijing National Laboratory for Molecular Science (BNLMS), College of Chemistry and the Peking University, Beijing 100871, China
| | - Dong-Dong Liu
- State Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education and Beijing National Laboratory for Molecular Science (BNLMS), College of Chemistry and the Peking University, Beijing 100871, China
| | - Kuang-Yu Wang
- State Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education and Beijing National Laboratory for Molecular Science (BNLMS), College of Chemistry and the Peking University, Beijing 100871, China
| | - Bing-Qi Tong
- State Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education and Beijing National Laboratory for Molecular Science (BNLMS), College of Chemistry and the Peking University, Beijing 100871, China
| | - Jia-Xin Xie
- State Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education and Beijing National Laboratory for Molecular Science (BNLMS), College of Chemistry and the Peking University, Beijing 100871, China
| | - Yan-Long Jiang
- State Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education and Beijing National Laboratory for Molecular Science (BNLMS), College of Chemistry and the Peking University, Beijing 100871, China
| | - Yong Li
- State Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education and Beijing National Laboratory for Molecular Science (BNLMS), College of Chemistry and the Peking University, Beijing 100871, China
| | - Bo Zhang
- State Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education and Beijing National Laboratory for Molecular Science (BNLMS), College of Chemistry and the Peking University, Beijing 100871, China
| | - Yi-Fan Liu
- State Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education and Beijing National Laboratory for Molecular Science (BNLMS), College of Chemistry and the Peking University, Beijing 100871, China
| | - Yuan-Xian Wang
- State Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education and Beijing National Laboratory for Molecular Science (BNLMS), College of Chemistry and the Peking University, Beijing 100871, China
| | - Jia-Jun Zhang
- State Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education and Beijing National Laboratory for Molecular Science (BNLMS), College of Chemistry and the Peking University, Beijing 100871, China
| | - Jia-Hua Chen
- State Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education and Beijing National Laboratory for Molecular Science (BNLMS), College of Chemistry and the Peking University, Beijing 100871, China
| | - Zhen Yang
- State Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education and Beijing National Laboratory for Molecular Science (BNLMS), College of Chemistry and the Peking University, Beijing 100871, China
- Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Shenzhen Graduate School of Peking University, Shenzhen 518055, China
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5
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Chaubet G, Goh SS, Mohammad M, Gockel B, Cordonnier MA, Baars H, Phillips AW, Anderson EA. Total Synthesis of the Schisandraceae Nortriterpenoid Rubriflordilactone A. Chemistry 2017; 23:14080-14089. [PMID: 28768051 PMCID: PMC5656881 DOI: 10.1002/chem.201703229] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2017] [Indexed: 01/31/2023]
Abstract
Full details of the total synthesis of the Schisandraceae nortriterpenoid natural product rubriflordilactone A are reported. Palladium- and cobalt-catalyzed polycyclizations were employed as key strategies to construct the central pentasubstituted arene from bromoendiyne and triyne precursors. This required the independent assembly of two AB ring aldehydes for combination with a common diyne component. A number of model systems were explored to investigate these two methodologies, and also to establish routes for the installation of the challenging benzopyran and butenolide rings.
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Affiliation(s)
- Guilhem Chaubet
- Chemistry Research LaboratoryUniversity of Oxford12 Mansfield RoadOxfordOX1 3TAUK
| | - Shermin S. Goh
- Chemistry Research LaboratoryUniversity of Oxford12 Mansfield RoadOxfordOX1 3TAUK
| | - Mujahid Mohammad
- Chemistry Research LaboratoryUniversity of Oxford12 Mansfield RoadOxfordOX1 3TAUK
| | - Birgit Gockel
- Chemistry Research LaboratoryUniversity of Oxford12 Mansfield RoadOxfordOX1 3TAUK
| | | | - Hannah Baars
- Institute of Organic ChemistryRWTH Aachen UniversityLandoltweg 152074AachenGermany
| | - Andrew W. Phillips
- Chemistry Research LaboratoryUniversity of Oxford12 Mansfield RoadOxfordOX1 3TAUK
| | - Edward A. Anderson
- Chemistry Research LaboratoryUniversity of Oxford12 Mansfield RoadOxfordOX1 3TAUK
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6
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Abstract
Cycloadditions are among the most efficient chemical processes, combining atom economy, stereospecificity, and the ability to generate molecular complexity in a single step. Aromatic rings would in principle be ideal reaction partners, as they contain, at least from the topological point of view, both olefinic and diene subunits; however, the stability of the conjugated aromatic system would be broken by cycloaddition reactions, which are therefore rarely applied, because kinetics and thermodynamics hinder the process. From that aspect, photochemical activation opens interesting perspectives, as one can selectively provide excess energy to one of the reactants but not to the product, thus preventing thermal back reaction. Indeed, aromatic rings show a rich photochemistry, ranging from isomerizations, substitutions, and additions to cycloadditions. In this review, we will focus on cycloadditions, covering literature from early observations up to the present.
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Affiliation(s)
- Richard Remy
- Department of Chemistry, University of Fribourg , Chemin du Musée 9, CH-1700 Fribourg, Switzerland
| | - Christian G Bochet
- Department of Chemistry, University of Fribourg , Chemin du Musée 9, CH-1700 Fribourg, Switzerland
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7
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Kuznetsov DM, Mukhina OA, Kutateladze AG. Photoassisted Synthesis of Complex Molecular Architectures: Dearomatization of Benzenoid Arenes with Aza-o-xylylenes via an Unprecedented [2+4] Reaction Topology. Angew Chem Int Ed Engl 2016; 55:6988-91. [PMID: 27097759 PMCID: PMC4943229 DOI: 10.1002/anie.201602288] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2016] [Indexed: 11/06/2022]
Abstract
A new method was developed for the photoinduced dearomatization of arenes through an intramolecular cycloaddition with aza-o-xylylenes generated by excited-state intramolecular proton transfer (ESIPT) in the readily available photoprecursors. The [2+4] topology of this cycloaddition is unprecedented for photo-dearomatizations of benzenoid aromatic carbocycles. It provides rapid access to novel heterocycles, cyclohexadieno-oxazolidino-quinolinols, as valuable synthons for a broad range of post-photochemical transformations.
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Affiliation(s)
- Dmitry M Kuznetsov
- Department of Chemistry and Biochemistry, University of Denver, 2190 E. Iliff Ave., Denver, CO, 80208, USA
| | - Olga A Mukhina
- Department of Chemistry and Biochemistry, University of Denver, 2190 E. Iliff Ave., Denver, CO, 80208, USA
| | - Andrei G Kutateladze
- Department of Chemistry and Biochemistry, University of Denver, 2190 E. Iliff Ave., Denver, CO, 80208, USA.
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8
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Kuznetsov DM, Mukhina OA, Kutateladze AG. Photoassisted Synthesis of Complex Molecular Architectures: Dearomatization of Benzenoid Arenes with Aza-o-xylylenes via an Unprecedented [2+4] Reaction Topology. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201602288] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Dmitry M. Kuznetsov
- Department of Chemistry and Biochemistry; University of Denver; 2190 E. Iliff Ave. Denver CO 80208 USA
| | - Olga A. Mukhina
- Department of Chemistry and Biochemistry; University of Denver; 2190 E. Iliff Ave. Denver CO 80208 USA
| | - Andrei G. Kutateladze
- Department of Chemistry and Biochemistry; University of Denver; 2190 E. Iliff Ave. Denver CO 80208 USA
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9
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Xu LM, You L, Shan ZH, Yu RC, Zhang B, Li YH, Shi Y, Chen JH, Yang Z. Asymmetric Total Synthesis of Propindilactone G, Part 1: Initial Attempts towards the Synthesis of Schiartanes. Chem Asian J 2016; 11:1406-13. [DOI: 10.1002/asia.201600129] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2016] [Indexed: 12/23/2022]
Affiliation(s)
- Ling-Ming Xu
- State Key Laboratory of Bioorganic Chemistry and Molecular Engineering of the Ministry of Education; Beijing National Laboratory for Molecular Science (BNLMS); Peking-Tsinghua Center for Life Sciences, and; Department of Chemistry; Peking University; 202 Chengfu Road Beijing 100871 P. R. China
| | - Lin You
- State Key Laboratory of Bioorganic Chemistry and Molecular Engineering of the Ministry of Education; Beijing National Laboratory for Molecular Science (BNLMS); Peking-Tsinghua Center for Life Sciences, and; Department of Chemistry; Peking University; 202 Chengfu Road Beijing 100871 P. R. China
| | - Zhen-Hua Shan
- State Key Laboratory of Bioorganic Chemistry and Molecular Engineering of the Ministry of Education; Beijing National Laboratory for Molecular Science (BNLMS); Peking-Tsinghua Center for Life Sciences, and; Department of Chemistry; Peking University; 202 Chengfu Road Beijing 100871 P. R. China
| | - Ruo-Cheng Yu
- State Key Laboratory of Bioorganic Chemistry and Molecular Engineering of the Ministry of Education; Beijing National Laboratory for Molecular Science (BNLMS); Peking-Tsinghua Center for Life Sciences, and; Department of Chemistry; Peking University; 202 Chengfu Road Beijing 100871 P. R. China
| | - Bo Zhang
- State Key Laboratory of Bioorganic Chemistry and Molecular Engineering of the Ministry of Education; Beijing National Laboratory for Molecular Science (BNLMS); Peking-Tsinghua Center for Life Sciences, and; Department of Chemistry; Peking University; 202 Chengfu Road Beijing 100871 P. R. China
| | - Yuan-He Li
- State Key Laboratory of Bioorganic Chemistry and Molecular Engineering of the Ministry of Education; Beijing National Laboratory for Molecular Science (BNLMS); Peking-Tsinghua Center for Life Sciences, and; Department of Chemistry; Peking University; 202 Chengfu Road Beijing 100871 P. R. China
| | - Ying Shi
- State Key Laboratory of Bioorganic Chemistry and Molecular Engineering of the Ministry of Education; Beijing National Laboratory for Molecular Science (BNLMS); Peking-Tsinghua Center for Life Sciences, and; Department of Chemistry; Peking University; 202 Chengfu Road Beijing 100871 P. R. China
| | - Jia-Hua Chen
- State Key Laboratory of Bioorganic Chemistry and Molecular Engineering of the Ministry of Education; Beijing National Laboratory for Molecular Science (BNLMS); Peking-Tsinghua Center for Life Sciences, and; Department of Chemistry; Peking University; 202 Chengfu Road Beijing 100871 P. R. China
| | - Zhen Yang
- State Key Laboratory of Bioorganic Chemistry and Molecular Engineering of the Ministry of Education; Beijing National Laboratory for Molecular Science (BNLMS); Peking-Tsinghua Center for Life Sciences, and; Department of Chemistry; Peking University; 202 Chengfu Road Beijing 100871 P. R. China
- Laboratory of Chemical Genomics; School of Chemical Biology and Biotechnology, Shenzhen Graduate School; Peking University; Shenzhen 518055 P. R. China
- Key Laboratory of Marine Drugs, Chinese Ministry of Education; School of Medicine and Pharmacy; Ocean University of China; 5 Yushan Road Qingdao P. R. China
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10
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Shi YM, Cai SL, Li XN, Liu M, Shang SZ, Du X, Xiao WL, Pu JX, Sun HD. LC-UV-Guided Isolation and Structure Determination of Lancolide E: A Nortriterpenoid with a Tetracyclo[5.4.0.0(2,4).0(3,7)]undecane-Bridged System from a "Talented" Schisandra Plant. Org Lett 2015; 18:100-3. [PMID: 26673855 DOI: 10.1021/acs.orglett.5b03334] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Lancolide E (1) featuring a complex tetracyclo[5.4.0.0(2,4).0(3,7)]undecane-bridged system that is constructed by an eight-, a three-, and two five-membered carbon rings in a sterically congested region was obtained in trace amounts from a "talented" schinortriterpenoid producer Schisandra lancifolia. Its structure was fully characterized by combining 2D NMR spectroscopy, theoretical calculations, and X-ray diffraction analysis. The biogenetic pathway of 1 was proposed to involve a Prins cyclization.
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Affiliation(s)
- Yi-Ming Shi
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201, Yunnan, People's Republic of China.,Guangdong Provincial Academy of Chinese Medical Sciences , Guangzhou 510006, Guangdong, People's Republic of China
| | - Song-Liang Cai
- School of Chemistry and Environment, South China Normal University , Guangzhou 510006, Guangdong, People's Republic of China
| | - Xiao-Nian Li
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201, Yunnan, People's Republic of China
| | - Miao Liu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201, Yunnan, People's Republic of China
| | - Shan-Zhai Shang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201, Yunnan, People's Republic of China
| | - Xue Du
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201, Yunnan, People's Republic of China
| | - Wei-Lie Xiao
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201, Yunnan, People's Republic of China
| | - Jian-Xin Pu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201, Yunnan, People's Republic of China
| | - Han-Dong Sun
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201, Yunnan, People's Republic of China
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11
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Goh SS, Chaubet G, Gockel B, Cordonnier MCA, Baars H, Phillips AW, Anderson EA. Total Synthesis of (+)-Rubriflordilactone A. Angew Chem Int Ed Engl 2015; 54:12618-21. [PMID: 26337920 PMCID: PMC4643188 DOI: 10.1002/anie.201506366] [Citation(s) in RCA: 76] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2015] [Indexed: 11/16/2022]
Abstract
Two enantioselective total syntheses of the nortriterpenoid natural product rubriflordilactone A are described, which use palladium- or cobalt-catalyzed cyclizations to form the CDE rings, and converge on a late-stage synthetic intermediate. These key processes are set up through the convergent coupling of a common diyne component with appropriate AB-ring aldehydes, a strategy that sets the stage for the synthetic exploration of other members of this family of natural products.
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Affiliation(s)
- Shermin S Goh
- Chemistry Research Laboratory, University of Oxford12 Mansfield Road, Oxford, OX1 3TA (UK) E-mail:
| | - Guilhem Chaubet
- Chemistry Research Laboratory, University of Oxford12 Mansfield Road, Oxford, OX1 3TA (UK) E-mail:
| | - Birgit Gockel
- Chemistry Research Laboratory, University of Oxford12 Mansfield Road, Oxford, OX1 3TA (UK) E-mail:
| | | | - Hannah Baars
- Institute of Organic Chemistry, RWTH Aachen UniversityLandoltweg 1, 52074 Aachen (Germany)
| | - Andrew W Phillips
- Chemistry Research Laboratory, University of Oxford12 Mansfield Road, Oxford, OX1 3TA (UK) E-mail:
| | - Edward A Anderson
- Chemistry Research Laboratory, University of Oxford12 Mansfield Road, Oxford, OX1 3TA (UK) E-mail:
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12
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Goh SS, Chaubet G, Gockel B, Cordonnier MCA, Baars H, Phillips AW, Anderson EA. Totalsynthese von (+)-Rubriflordilacton A. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201506366] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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