1
|
Hocine S, Duchamp E, Mishra A, Fourquez JM, Hanessian S. Synthesis of Aza-Bridged Perhydroazulene Chimeras of Tropanes and Hederacine A. J Org Chem 2023; 88:4675-4686. [PMID: 36940388 DOI: 10.1021/acs.joc.3c00169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/22/2023]
Abstract
We report the synthesis of two novel azaperhydroazulene tropane-hederacine chimeras A and B, which contain an 8-azabicyclo[3.2.1]octane ring and a 7-azabicyclo[4.1.1]octane ring, respectively. The synthesis of both chimeras was achieved by epoxide ring opening and was governed by the stereochemistry of the hydroxy-epoxide unit. Finally, a density functional theory study was conducted to explain the regioselectivity of the cyclization and the importance of the stereochemistry of the hydroxyl group.
Collapse
Affiliation(s)
- Sofiane Hocine
- Department of Chemistry, Université de Montréal, Station Centre-Ville, C.P. 6128, Montreal, Quebec H3C 3J7, Canada
| | - Edouard Duchamp
- Department of Chemistry, Université de Montréal, Station Centre-Ville, C.P. 6128, Montreal, Quebec H3C 3J7, Canada
| | - Akash Mishra
- Department of Chemistry, Université de Montréal, Station Centre-Ville, C.P. 6128, Montreal, Quebec H3C 3J7, Canada
| | | | - Stephen Hanessian
- Department of Chemistry, Université de Montréal, Station Centre-Ville, C.P. 6128, Montreal, Quebec H3C 3J7, Canada
| |
Collapse
|
2
|
Yu XC, Zhang CC, Wang LT, Li JZ, Li T, Wei WT. The synthesis of seven- and eight-membered rings by radical strategies. Org Chem Front 2022. [DOI: 10.1039/d2qo00774f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Radical strategies for preparation of seven- or eight-membered rings.
Collapse
Affiliation(s)
- Xuan-Chi Yu
- Institute of Drug Discovery Technology, School of Materials Science and Chemical Engineering, Ningbo University, Ningbo, Zhejiang, 315211, China
| | - Can-Can Zhang
- Institute of Drug Discovery Technology, School of Materials Science and Chemical Engineering, Ningbo University, Ningbo, Zhejiang, 315211, China
| | - Ling-Tao Wang
- Institute of Drug Discovery Technology, School of Materials Science and Chemical Engineering, Ningbo University, Ningbo, Zhejiang, 315211, China
| | - Jiao-Zhe Li
- Institute of Drug Discovery Technology, School of Materials Science and Chemical Engineering, Ningbo University, Ningbo, Zhejiang, 315211, China
| | - Ting Li
- College of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang, Henan, 473061, China
| | - Wen-Ting Wei
- Institute of Drug Discovery Technology, School of Materials Science and Chemical Engineering, Ningbo University, Ningbo, Zhejiang, 315211, China
| |
Collapse
|
3
|
Lowe RA, Taylor D, Chibale K, Nelson A, Marsden SP. Synthesis and evaluation of the performance of a small molecule library based on diverse tropane-related scaffolds. Bioorg Med Chem 2020; 28:115442. [PMID: 32209295 DOI: 10.1016/j.bmc.2020.115442] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Revised: 03/02/2020] [Accepted: 03/12/2020] [Indexed: 12/20/2022]
Abstract
A unified synthetic approach was developed that enabled the synthesis of diverse tropane-related scaffolds. The key intermediates that were exploited were cycloadducts formed by reaction between 3-hydroxy-pyridinium salts and vinyl sulfones or sulfonamides. The diverse tropane-related scaffolds were formed by addition of substituents to, cyclisation reactions of, and fusion of additional ring(s) to the key bicyclic intermediates. A set of 53 screening compounds was designed, synthesised and evaluated in order to determine the biological relevance of the scaffolds accessible using the synthetic approach. Two inhibitors of Hedgehog signalling, and four compounds with weak activity against the parasite P. falciparum, were discovered. Three of the active compounds may be considered to be indotropane or pyrrotropane pseudo natural products in which a tropane is fused with a fragment from another natural product class. It was concluded that the unified synthetic approach had yielded diverse scaffolds suitable for the design of performance-diverse screening libraries.
Collapse
Affiliation(s)
- Robert A Lowe
- Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds LS2 9JT, UK; School of Chemistry, University of Leeds, Leeds LS2 9JT, UK
| | - Dale Taylor
- H3D Drug Discovery and Development Center, University of Cape Town, Private Bag, Rondebosch 7700, South Africa
| | - Kelly Chibale
- Department of Chemistry, University of Cape Town, Rondebosch 7701, South Africa; Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Rondebosch 7701, South Africa; South African Medical Research Council, Drug Discovery and Development Research Unit, University of Cape Town, Rondebosch 7701, South Africa
| | - Adam Nelson
- Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds LS2 9JT, UK; School of Chemistry, University of Leeds, Leeds LS2 9JT, UK.
| | | |
Collapse
|
4
|
Synthesis of γ-lactams via trifluoromethylative aminocarbonylation of unactivated olefins. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2019.151479] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
5
|
Suga H, Toda Y. Catalytic Asymmetric 1,3-Dipolar Cycloaddition Reactions Based on Ylide Formation Reactions. J SYN ORG CHEM JPN 2019. [DOI: 10.5059/yukigoseikyokaishi.77.1014] [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)
- Hiroyuki Suga
- Department of Materials Chemistry, Faculty of Engineering, Shinshu University
| | | |
Collapse
|
6
|
Chen D, Ji M, Zhu C. Intramolecular nitration–aminocarbonylation of unactivated olefins: metal-free synthesis of γ-lactams. Chem Commun (Camb) 2019; 55:7796-7799. [DOI: 10.1039/c9cc03736e] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel, metal-free synthesis of valuable γ-lactams through the radical-mediated nitration–aminocarbonylation of unactivated olefins is reported.
Collapse
Affiliation(s)
- Dong Chen
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou
| | - Meishan Ji
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou
| | - Chen Zhu
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou
| |
Collapse
|
7
|
Suga H, Yoshiwara M, Yamaguchi T, Bando T, Taguchi M, Inaba A, Goto Y, Kikuchi A, Itoh K, Toda Y. Enantioselective synthesis of 8-azabicyclo[3.2.1]octanes via asymmetric 1,3-dipolar cycloadditions of cyclic azomethine ylides using a dual catalytic system. Chem Commun (Camb) 2019; 55:1552-1555. [DOI: 10.1039/c8cc09224a] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
The asymmetric 1,3-dipolar cycloaddition between diazo imine-derived cyclic azomethine ylides and acryloylpyrazolidinone using a dual catalytic system is reported.
Collapse
Affiliation(s)
- Hiroyuki Suga
- Department of Materials Chemistry, Faculty of Engineering, Shinshu University
- Wakasato
- Japan
| | - Masahiro Yoshiwara
- Department of Materials Chemistry, Faculty of Engineering, Shinshu University
- Wakasato
- Japan
| | - Takaaki Yamaguchi
- Department of Materials Chemistry, Faculty of Engineering, Shinshu University
- Wakasato
- Japan
| | - Takashi Bando
- Department of Materials Chemistry, Faculty of Engineering, Shinshu University
- Wakasato
- Japan
| | - Mizuki Taguchi
- Department of Materials Chemistry, Faculty of Engineering, Shinshu University
- Wakasato
- Japan
| | - Ayano Inaba
- Department of Materials Chemistry, Faculty of Engineering, Shinshu University
- Wakasato
- Japan
| | - Yuichi Goto
- Department of Materials Chemistry, Faculty of Engineering, Shinshu University
- Wakasato
- Japan
| | - Ayaka Kikuchi
- Department of Materials Chemistry, Faculty of Engineering, Shinshu University
- Wakasato
- Japan
| | - Kennosuke Itoh
- Laboratory of Medicinal Chemistry, School of Pharmacy, Kitasato University
- Tokyo 108-8641
- Japan
- Medicinal Research Laboratories, School of Pharmacy, Kitasato University
- Tokyo 108-8641
| | - Yasunori Toda
- Department of Materials Chemistry, Faculty of Engineering, Shinshu University
- Wakasato
- Japan
| |
Collapse
|
8
|
Afewerki S, Wang JX, Liao WW, Córdova A. The Chemical Synthesis and Applications of Tropane Alkaloids. THE ALKALOIDS. CHEMISTRY AND BIOLOGY 2018; 81:151-233. [PMID: 30685050 DOI: 10.1016/bs.alkal.2018.06.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Tropanes are an important class of alkaloid natural products that are found in plants all over the world. These compounds can exhibit significant biological activity and are among the oldest known medicines. In the early 19th century, tropanes were isolated, characterized, and synthesized by notable chemical researchers. Their significant biological activities have inspired tremendous research efforts toward their synthesis and the elucidation of their pharmacological activity both in academia and in industry. In this chapter, which addresses the developments in this field since 1994, the focus is on the synthesis of these compounds, and several examples of sophisticated synthetic protocols involving both asymmetric and catalytic approaches are described. In addition, the structures of more than 100 new alkaloids are included as well as the applications and pharmacological properties of some tropane alkaloids.
Collapse
Affiliation(s)
- Samson Afewerki
- Department of Natural Sciences, Mid Sweden University, Sundsvall, Sweden; Berzelii Center EXSELENT, The Arrhenius Laboratory, Stockholm University, Stockholm, Sweden
| | - Jia-Xin Wang
- Department of Organic Chemistry, College of Chemistry, Jilin University, Changchun, China
| | - Wei-Wei Liao
- Department of Organic Chemistry, College of Chemistry, Jilin University, Changchun, China.
| | - Armando Córdova
- Department of Natural Sciences, Mid Sweden University, Sundsvall, Sweden; Berzelii Center EXSELENT, The Arrhenius Laboratory, Stockholm University, Stockholm, Sweden.
| |
Collapse
|
9
|
Zhou H, Yang X, Li S, Zhu Y, Li Y, Zhang Y. Visible light-induced aerobic oxidative cross-coupling of glycine esters with α-angelicalactone: a facile pathway to γ-lactams. Org Biomol Chem 2018; 16:6728-6734. [DOI: 10.1039/c8ob01844h] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A rapid synthesis of substituted γ-lactams is achieved via metal-free photocatalyzed aerobic oxidative dehydrogenative formal [2 + 3] cyclization of glycine esters with α-angelicalactone.
Collapse
Affiliation(s)
- Huang Zhou
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Xiaorong Yang
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Shilin Li
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Yin Zhu
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Ying Li
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Yuan Zhang
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
| |
Collapse
|
10
|
Synthesis of Nitrogen Heterocycles Using Samarium(II) Iodide. Molecules 2017; 22:molecules22112018. [PMID: 29160806 PMCID: PMC6150357 DOI: 10.3390/molecules22112018] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2017] [Revised: 11/11/2017] [Accepted: 11/13/2017] [Indexed: 11/19/2022] Open
Abstract
Nitrogen heterocycles represent vital structural motifs in biologically-active natural products and pharmaceuticals. As a result, the development of new, convenient and more efficient processes to N-heterocycles is of great interest to synthetic chemists. Samarium(II) iodide (SmI2, Kagan’s reagent) has been widely used to forge challenging C–C bonds through reductive coupling reactions. Historically, the use of SmI2 in organic synthesis has been focused on the construction of carbocycles and oxygen-containing motifs. Recently, significant advances have taken place in the use of SmI2 for the synthesis of nitrogen heterocycles, enabled in large part by the unique combination of high reducing power of this reagent (E1/2 of up to −2.8 V) with excellent chemoselectivity of the reductive umpolung cyclizations mediated by SmI2. In particular, radical cross-coupling reactions exploiting SmI2-induced selective generation of aminoketyl radicals have emerged as concise and efficient methods for constructing 2-azabicycles, pyrrolidines and complex polycyclic barbiturates. Moreover, a broad range of novel processes involving SmI2-promoted formation of aminyl radicals have been leveraged for the synthesis of complex nitrogen-containing molecular architectures by direct and tethered pathways. Applications to the synthesis of natural products have highlighted the generality of processes and the intermediates accessible with SmI2. In this review, recent advances involving the synthesis of nitrogen heterocycles using SmI2 are summarized, with a major focus on reductive coupling reactions that enable one-step construction of nitrogen-containing motifs in a highly efficient manner, while taking advantage of the spectacular selectivity of the venerable Kagan’s reagent.
Collapse
|
11
|
Pd(0)-catalyzed atom transfer radical cyclization of N -allyl-α-chloroamides: highly stereoselective synthesis of substituted γ-lactam. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.05.094] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
|
12
|
Zheng X, Liu J, Ye CX, Wang A, Wang AE, Huang PQ. SmI2-Mediated Radical Coupling Strategy to Securinega Alkaloids: Total Synthesis of (−)-14,15-Dihydrosecurinine and Formal Total Synthesis of (−)-Securinine. J Org Chem 2014; 80:1034-41. [DOI: 10.1021/jo502522x] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Xiao Zheng
- Department
of Chemistry and The Key Laboratory for Chemical Biology of Fujian
Province, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, China
- Key
Laboratory of Synthetic Chemistry of Natural Substances, Shanghai
Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
| | - Juan Liu
- Department
of Chemistry and The Key Laboratory for Chemical Biology of Fujian
Province, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, China
| | - Chen-Xi Ye
- Department
of Chemistry and The Key Laboratory for Chemical Biology of Fujian
Province, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, China
| | - Ao Wang
- Department
of Chemistry and The Key Laboratory for Chemical Biology of Fujian
Province, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, China
| | - Ai-E Wang
- Department
of Chemistry and The Key Laboratory for Chemical Biology of Fujian
Province, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, China
| | - Pei-Qiang Huang
- Department
of Chemistry and The Key Laboratory for Chemical Biology of Fujian
Province, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, China
| |
Collapse
|
13
|
Chen C, Hu J, Su J, Tong X. Synthesis of substituted γ-lactam via Pd(0)-catalyzed cyclization of alkene-tethered carbamoyl chloride. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.04.019] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
14
|
Szostak M, Fazakerley NJ, Parmar D, Procter DJ. Cross-Coupling Reactions Using Samarium(II) Iodide. Chem Rev 2014; 114:5959-6039. [DOI: 10.1021/cr400685r] [Citation(s) in RCA: 290] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Michal Szostak
- School
of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL, United Kingdom
| | - Neal J. Fazakerley
- School
of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL, United Kingdom
| | - Dixit Parmar
- School
of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL, United Kingdom
| | - David J. Procter
- School
of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL, United Kingdom
| |
Collapse
|
15
|
Ye LW, Shu C, Gagosz F. Recent progress towards transition metal-catalyzed synthesis of γ-lactams. Org Biomol Chem 2014; 12:1833-45. [DOI: 10.1039/c3ob42181c] [Citation(s) in RCA: 109] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The scope of transition metal-catalyzed synthesis of functionalized γ-lactams has broadened tremendously in the last decade (see the picture). These metal-catalyzed processes are reviewed by highlighting their specificity and applicability, and the mechanistic rationale is presented where possible.
Collapse
Affiliation(s)
- Long-Wu Ye
- Department of Chemistry and Fujian Provincial Key Laboratory of Chemical Biology
- College of Chemistry and Chemical Engineering
- Xiamen University
- Xiamen 361005, P. R. China
| | - Chao Shu
- Department of Chemistry and Fujian Provincial Key Laboratory of Chemical Biology
- College of Chemistry and Chemical Engineering
- Xiamen University
- Xiamen 361005, P. R. China
| | - Fabien Gagosz
- Laboratoire de Synthèse Organique (DCSO)
- UMR 7652 CNRS/Ecole Polytechnique
- Ecole Polytechnique
- 91128 Palaiseau cedex, France
| |
Collapse
|
16
|
Mao Z, Huang S, Gao L, Wang A, Huang P. A novel and versatile method for the enantioselective syntheses of tropane alkaloids. Sci China Chem 2013. [DOI: 10.1007/s11426-013-4998-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
17
|
Xiao KJ, Wang Y, Huang YH, Wang XG, Huang PQ. A Direct and General Method for the Reductive Alkylation of Tertiary Lactams/Amides: Application to the Step Economical Synthesis of Alkaloid (−)-Morusimic Acid D. J Org Chem 2013; 78:8305-11. [DOI: 10.1021/jo4007656] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kai-Jiong Xiao
- Department of Chemistry,
College
of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, People’s Republic of China
| | - Yu Wang
- Department of Chemistry,
College
of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, People’s Republic of China
| | - Ying-Hong Huang
- Department of Chemistry,
College
of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, People’s Republic of China
| | - Xiao-Gang Wang
- Department of Chemistry,
College
of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, People’s Republic of China
| | - Pei-Qiang Huang
- Department of Chemistry,
College
of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, People’s Republic of China
- The State Key Laboratory of
Elemento-Organic Chemistry, Nankai University, Tianjin 300071, People’s Republic of China
| |
Collapse
|
18
|
Shu C, Liu MQ, Wang SS, Li L, Ye LW. Gold-Catalyzed Oxidative Cyclization of Chiral Homopropargyl Amides: Synthesis of Enantioenriched γ-Lactams. J Org Chem 2013; 78:3292-9. [DOI: 10.1021/jo400127x] [Citation(s) in RCA: 71] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Chao Shu
- Department of Chemistry and Fujian
Provincial Key Laboratory
of Chemical Biology, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, PR China
| | - Meng-Qi Liu
- Department of Chemistry and Fujian
Provincial Key Laboratory
of Chemical Biology, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, PR China
| | - Shan-Shan Wang
- Department of Chemistry and Fujian
Provincial Key Laboratory
of Chemical Biology, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, PR China
| | - Long Li
- Department of Chemistry and Fujian
Provincial Key Laboratory
of Chemical Biology, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, PR China
| | - Long-Wu Ye
- Department of Chemistry and Fujian
Provincial Key Laboratory
of Chemical Biology, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, PR China
| |
Collapse
|
19
|
Huang SY, Chang Z, Tuo SC, Gao LH, Wang AE, Huang PQ. Versatile construction of functionalized tropane ring systems based on lactam activation: enantioselective synthesis of (+)-pervilleine B. Chem Commun (Camb) 2013; 49:7088-90. [DOI: 10.1039/c3cc43665a] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
20
|
Tuo S, Liu X, Huang P. Towards Stereochemical Control: Two Approaches for the Highlyanti-Diastereoselective Construction of the Spirolactone Moieties of SomeStemonaAlkaloids. CHINESE J CHEM 2012. [DOI: 10.1002/cjoc.201200904] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
|
21
|
Luo SP, Guo LD, Gao LH, Li S, Huang PQ. Toward the Total Synthesis of Haliclonin A: Construction of a Tricyclic Substructure. Chemistry 2012; 19:87-91. [DOI: 10.1002/chem.201203203] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2012] [Revised: 11/12/2012] [Indexed: 11/11/2022]
|
22
|
Liu XK, Ye JL, Ruan YP, Li YX, Huang PQ. Total Synthesis of (−)-Sessilifoliamide J. J Org Chem 2012; 78:35-41. [DOI: 10.1021/jo3014484] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Xue-Kui Liu
- Department of Chemistry, College
of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, P. R. China
| | - Jian-Liang Ye
- Department of Chemistry, College
of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, P. R. China
| | - Yuan-Ping Ruan
- Department of Chemistry, College
of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, P. R. China
| | - Yu-Xiu Li
- Department of Chemistry, College
of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, P. R. China
| | - Pei-Qiang Huang
- Department of Chemistry, College
of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, P. R. China
- State Key Laboratory of Bioorganic and Natural Products Chemistry, 354 Fenglin
Lu, Shanghai 200032, P. R. China
| |
Collapse
|
23
|
Hu KZ, Ma J, Qiu S, Zheng X, Huang PQ. SmI2-mediated intermolecular coupling of γ-lactam N-α-radicals with activated alkenes: asymmetric synthesis of 11-hydroxylated analogues of the lead compounds CP-734432 and PF-04475270. J Org Chem 2012; 78:1790-801. [PMID: 22853560 DOI: 10.1021/jo301277n] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We report, for the first time, the synthesis of 8-aza-analogues of PGE2. The SmI2-mediated cross coupling reactions of γ-lactam-hemiaminal 9, lactam 2-pyridyl sulfide 17, and lactam 2-pyridyl sulfone 18 with activated alkenes/alkyne were first developed, giving the corresponding γ-lactams in 49-78%, 45-75%, and 75-90%, respectively. The reactions of lactam 2-pyridyl sulfide and 2-pyridyl sulfone proceeded with ≥12:1 trans-diastereoselectivities. This represents the first intermolecular coupling reaction of the γ-lactam N-α-alkyl radicals of types B, B1, and B2 with activated alkenes. Two radical-based mechanisms were suggested. The asymmetric synthesis of the 11-hydroxylated analogue of the highly selective EP4 receptor agonist PF-04475270 (30), the 11-hydroxylated analogue of ocular hypotensive CP-734432 (31), compounds 35 and 36 have been achieved on the basis of this method.
Collapse
Affiliation(s)
- Kong-Zhen Hu
- Department of Chemistry and Fujian Provincial Key Laboratory of Chemical Biology, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, PR China
| | | | | | | | | |
Collapse
|
24
|
Zhuang JJ, Ye JL, Zhang HK, Huang PQ. An unexpected high erythro-selection in the Grignard reaction with an N,O-acetal: a concise asymmetric synthesis of indolizidine alkaloid (−)-2-epi-lentiginosine. Tetrahedron 2012. [DOI: 10.1016/j.tet.2011.12.063] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
25
|
Liu XK, Zheng X, Ruan YP, Ma J, Huang PQ. One-pot reductive coupling of N-acylcarbamates with activated alkenes: application to the asymmetric synthesis of pyrrolo[1,2-a]azepin-5-one ring system and (−)-xenovenine. Org Biomol Chem 2012; 10:1275-84. [DOI: 10.1039/c1ob06697h] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
26
|
Schultz DM, Wolfe JP. Intramolecular alkene carboamination reactions for the synthesis of enantiomerically enriched tropane derivatives. Org Lett 2011; 13:2962-5. [PMID: 21561145 PMCID: PMC3103612 DOI: 10.1021/ol201051q] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The synthesis of tropane derivatives via intramolecular Pd-catalyzed alkene difunctionalization reactions is described. Enantiopure N-aryl-γ-aminoalkenes bearing an aryl or alkenyl halide adjacent to the amino group were converted to benzo- or cycloalkenyl-fused tropane products in good yield and with no loss of enantiopurity.
Collapse
Affiliation(s)
- Danielle M. Schultz
- Department of Chemistry, University of Michigan, 930 N. University Avenue, Ann Arbor, Michigan, 48109-1055
| | - John P. Wolfe
- Department of Chemistry, University of Michigan, 930 N. University Avenue, Ann Arbor, Michigan, 48109-1055
| |
Collapse
|
27
|
Asymmetric syntheses of (8R,8aS)- and (8R,8aR)-8-hydroxy-5-indolizidinones: Two promising oxygenated indolizidine building blocks. Sci China Chem 2011. [DOI: 10.1007/s11426-011-4256-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
28
|
Zhang ZL, Nakagawa S, Kato A, Jia YM, Hu XG, Yu CY. A concise stereoselective synthesis of (−)-erycibelline. Org Biomol Chem 2011; 9:7713-9. [DOI: 10.1039/c1ob06244a] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|