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51
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Xu RQ, Gu Q, You SL. Construction of the Benzomesembrine Skeleton: Palladium(0)-Catalyzed Intermolecular Arylative Dearomatization of α-Naphthols and Subsequent Aza-Michael Reaction. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201703674] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Ren-Qi Xu
- State Key Laboratory of Organometallic Chemistry; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences, Chinese Academy of Sciences; 345 Lingling Lu Shanghai 200032 China
| | - Qing Gu
- State Key Laboratory of Organometallic Chemistry; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences, Chinese Academy of Sciences; 345 Lingling Lu Shanghai 200032 China
| | - Shu-Li You
- State Key Laboratory of Organometallic Chemistry; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences, Chinese Academy of Sciences; 345 Lingling Lu Shanghai 200032 China
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52
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Xu RQ, Gu Q, You SL. Construction of the Benzomesembrine Skeleton: Palladium(0)-Catalyzed Intermolecular Arylative Dearomatization of α-Naphthols and Subsequent Aza-Michael Reaction. Angew Chem Int Ed Engl 2017; 56:7252-7256. [DOI: 10.1002/anie.201703674] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2017] [Indexed: 01/04/2023]
Affiliation(s)
- Ren-Qi Xu
- State Key Laboratory of Organometallic Chemistry; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences, Chinese Academy of Sciences; 345 Lingling Lu Shanghai 200032 China
| | - Qing Gu
- State Key Laboratory of Organometallic Chemistry; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences, Chinese Academy of Sciences; 345 Lingling Lu Shanghai 200032 China
| | - Shu-Li You
- State Key Laboratory of Organometallic Chemistry; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences, Chinese Academy of Sciences; 345 Lingling Lu Shanghai 200032 China
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53
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Kalaitzakis D, Triantafyllakis M, Ioannou GI, Vassilikogiannakis G. One-Pot Transformation of Simple Furans into Octahydroindole Scaffolds. Angew Chem Int Ed Engl 2017; 56:4020-4023. [DOI: 10.1002/anie.201700620] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2017] [Indexed: 02/02/2023]
Affiliation(s)
- Dimitris Kalaitzakis
- Department of Chemistry; University of Crete; Vasilika Vouton 71003 Iraklion Crete Greece
| | - Myron Triantafyllakis
- Department of Chemistry; University of Crete; Vasilika Vouton 71003 Iraklion Crete Greece
| | - Georgios I. Ioannou
- Department of Chemistry; University of Crete; Vasilika Vouton 71003 Iraklion Crete Greece
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54
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Kalaitzakis D, Triantafyllakis M, Ioannou GI, Vassilikogiannakis G. One-Pot Transformation of Simple Furans into Octahydroindole Scaffolds. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201700620] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Dimitris Kalaitzakis
- Department of Chemistry; University of Crete; Vasilika Vouton 71003 Iraklion Crete Greece
| | - Myron Triantafyllakis
- Department of Chemistry; University of Crete; Vasilika Vouton 71003 Iraklion Crete Greece
| | - Georgios I. Ioannou
- Department of Chemistry; University of Crete; Vasilika Vouton 71003 Iraklion Crete Greece
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55
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Gao N(Y, Banwell MG, Willis AC. Biomimetic Total Synthesis of the Pentacyclic Amaryllidaceae Alkaloid Derivative Gracilamine. Org Lett 2016; 19:162-165. [DOI: 10.1021/acs.orglett.6b03465] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Nadia (Yuqian) Gao
- Research School of Chemistry,
Institute of Advanced Studies, The Australian National University, Canberra, ACT 2601, Australia
| | - Martin G. Banwell
- Research School of Chemistry,
Institute of Advanced Studies, The Australian National University, Canberra, ACT 2601, Australia
| | - Anthony C. Willis
- Research School of Chemistry,
Institute of Advanced Studies, The Australian National University, Canberra, ACT 2601, Australia
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56
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Grigalunas M, Wiest O, Helquist P. Single-Flask Multicomponent Synthesis of Highly Substituted α-Pyrones via a Sequential Enolate Arylation and Alkenylation Strategy. Org Lett 2016; 18:5724-5727. [PMID: 27768319 DOI: 10.1021/acs.orglett.6b02969] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Trisubstituted α-pyrones are obtained by a Pd-catalyzed three-component, single-flask operation via an α-arylation, subsequent α-alkenylation, alkene isomerization, and dienolate lactonization. A variety of coupling components under mild conditions afforded isolated yields of up to 93% of the pyrones with complete control of regioselectivity. Metal dependence was noted for three of the steps of the pathway. Utility of the pyrone products was demonstrated by further transformations providing convenient access to polyaromatic compounds, exhibiting broad molecular diversity.
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Affiliation(s)
- Michael Grigalunas
- Department of Chemistry and Biochemistry, University of Notre Dame , Notre Dame, Indiana 46566, United States
| | - Olaf Wiest
- Department of Chemistry and Biochemistry, University of Notre Dame , Notre Dame, Indiana 46566, United States.,Lab of Computational Chemistry and Drug Design, School of Chemical Biology and Biotechnology, Peking University, Shenzhen Graduate School , Shenzhen 518055, China
| | - Paul Helquist
- Department of Chemistry and Biochemistry, University of Notre Dame , Notre Dame, Indiana 46566, United States
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57
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Affiliation(s)
- Lu-Ning Wang
- Beijing
National Laboratory for Molecular Sciences (BNLMS), Key Laboratory
of Bioorganic Chemistry and Molecular Engineering of Ministry of Education,
College of Chemistry, Peking University, Beijing 100871, China
| | - Qi Cui
- Beijing
National Laboratory for Molecular Sciences (BNLMS), Key Laboratory
of Bioorganic Chemistry and Molecular Engineering of Ministry of Education,
College of Chemistry, Peking University, Beijing 100871, China
| | - Zhi-Xiang Yu
- Beijing
National Laboratory for Molecular Sciences (BNLMS), Key Laboratory
of Bioorganic Chemistry and Molecular Engineering of Ministry of Education,
College of Chemistry, Peking University, Beijing 100871, China
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58
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Bose S, Yang J, Yu ZX. Formal Synthesis of Gracilamine Using Rh(I)-Catalyzed [3 + 2 + 1] Cycloaddition of 1-Yne–Vinylcyclopropanes and CO. J Org Chem 2016; 81:6757-65. [DOI: 10.1021/acs.joc.6b00608] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Sritama Bose
- Beijing National Laboratory
for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry
and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
| | - Jun Yang
- Beijing National Laboratory
for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry
and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
| | - Zhi-Xiang Yu
- Beijing National Laboratory
for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry
and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
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59
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Spittler M, Lutsenko K, Czekelius C. Total Synthesis of (+)-Mesembrine Applying Asymmetric Gold Catalysis. J Org Chem 2016; 81:6100-5. [DOI: 10.1021/acs.joc.6b00985] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Michael Spittler
- Institute for Organic Chemistry
and Macromolecular Chemistry, Universität Düsseldorf, Universitätsstr.
1, D-40225 Düsseldorf, Germany
| | - Kiril Lutsenko
- Institute for Organic Chemistry
and Macromolecular Chemistry, Universität Düsseldorf, Universitätsstr.
1, D-40225 Düsseldorf, Germany
| | - Constantin Czekelius
- Institute for Organic Chemistry
and Macromolecular Chemistry, Universität Düsseldorf, Universitätsstr.
1, D-40225 Düsseldorf, Germany
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60
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Kaplan W, Khatri HR, Nagorny P. Concise Enantioselective Total Synthesis of Cardiotonic Steroids 19-Hydroxysarmentogenin and Trewianin Aglycone. J Am Chem Soc 2016; 138:7194-8. [PMID: 27232585 PMCID: PMC5015484 DOI: 10.1021/jacs.6b04029] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
The expedient and scalable approach to cardiotonic steroids carrying oxygenation at the C11- and C19-positions has been developed and applied to the total asymmetric synthesis of steroids 19-hydroxysarmentogenin and trewianin aglycone as well as to the assembly of the panogenin core. This new approach features enantioselective organocatalytic oxidation of an aldehyde, diastereoselective Cu(OTf)2-catalyzed Michael reaction/tandem aldol cyclizations, and one-pot reduction/transposition reactions allowing a rapid (7 linear steps) assembly of a functionalized cardenolide skeleton. The ability to quickly set this steroidal core with preinstalled functional handles and diversity elements eliminates the need for difficult downstream functionalizations and substantially improves the accessibility to the entire class of cardenolides and their derivatives for biological evaluation.
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Affiliation(s)
- Will Kaplan
- Chemistry Department, University of Michigan, Ann Arbor, MI 48109
| | - Hem Raj Khatri
- Chemistry Department, University of Michigan, Ann Arbor, MI 48109
| | - Pavel Nagorny
- Chemistry Department, University of Michigan, Ann Arbor, MI 48109
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