1
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Gadhave MS, Prasad KR. Diastereoselective Addition of Lithiated Allenyl Sulfones to Nonracemic Sulfinimines: Asymmetric Synthesis of Diverse Heterocycles. J Org Chem 2024; 89:15364-15373. [PMID: 39377104 DOI: 10.1021/acs.joc.4c01982] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/09/2024]
Abstract
The addition of lithiated allenyl sulfones to nonracemic sulfinimines furnished sulfinamides possessing the allenyl sulfonyl moiety with excellent diastereoselectivity. The formed products are transformed into different heterocycles, including the synthesis of pyrroline, pyran, and functionalized benzopyran.
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Affiliation(s)
- Mahesh S Gadhave
- Department of Organic Chemistry, Indian Institute of Science, Bangalore 560012, India
| | - Kavirayani R Prasad
- Department of Organic Chemistry, Indian Institute of Science, Bangalore 560012, India
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2
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Yang S, Wang F, Scales S, Tran-Dubé M, Berry M, Xu H, Tang F, Xue L, Ma Z, Li B, McAlpine I. A Disconnection for Rapid Access to Heterocyclic Benzylic Amines with Fully Substituted α-Carbons. J Org Chem 2024; 89:3926-3930. [PMID: 38441005 DOI: 10.1021/acs.joc.3c02748] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2024]
Abstract
2- or 4-Pyridyl benzylic amines represent a privileged motif in drug discovery. However, the formation of heterocyclic benzylic amines with fully substituted α-carbons can require the execution of lengthy synthetic routes, which limit their application. Addition of various nucleophilic agents to Ellman's imines has been well established; however, there is no precedented literature reported for pyridyl-type nucleophiles, which are very important for medicinal chemistry. In this letter, we disclose the development of a one-step synthesis of heterocyclic benzylic amines with fully substituted α-carbons from heteroaryl halides and sulfinyl imines. Starting from 2,4-dibromopyridine, regioselective synthesis of 2- or 4-pyridyl benzylic amines could be achieved by choosing toluene or MTBE as a solvent.
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Affiliation(s)
- Shouliang Yang
- Pfizer Oncology Medicinal Chemistry, San Diego, California 92121, United States
| | - Fen Wang
- Pfizer Oncology Medicinal Chemistry, San Diego, California 92121, United States
| | - Stephanie Scales
- Pfizer Oncology Medicinal Chemistry, San Diego, California 92121, United States
| | - Michelle Tran-Dubé
- Pfizer Oncology Medicinal Chemistry, San Diego, California 92121, United States
| | - Madeline Berry
- Pfizer Oncology Medicinal Chemistry, San Diego, California 92121, United States
| | | | | | | | | | - Bryan Li
- Pfizer Chemical R&D, San Diego, California 92121, United States
| | - Indrawan McAlpine
- Pfizer Oncology Medicinal Chemistry, San Diego, California 92121, United States
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3
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Dobrydnev AV, Popova MV, Volovenko YM. Cyclic Sulfinamides. CHEM REC 2024; 24:e202300221. [PMID: 37594737 DOI: 10.1002/tcr.202300221] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 08/09/2023] [Indexed: 08/19/2023]
Abstract
The literature on cyclic sulfinamides (put simply, sultims) published from 1989 to 2022 has been summarized and reviewed. The information is divided into two sections: the analysis of synthetic methods on the preparation of cyclic sulfinamides and the discussion of the chemical properties of cyclic sulfinamides focusing on their reactions and applications. The survey of the reaction conditions, provided in the most detailed way, and a critical view of the reaction mechanisms add an extra dimension to the text. The data presented will be useful to specialists in different areas, especially those who work in the field of synthetic organic and pharmaceutical chemistry.
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Affiliation(s)
- Alexey V Dobrydnev
- Taras Shevchenko National University of Kyiv, Volodymyrska Street 60, Kyiv, 01033, Ukraine
- Enamine Ltd., Chervonotkatska Street 78, Kyiv, 02094, Ukraine
| | - Maria V Popova
- Taras Shevchenko National University of Kyiv, Volodymyrska Street 60, Kyiv, 01033, Ukraine
- Max Planck Institute for Polymer Research, Ackermannweg 10, D-55128, Mainz, Germany
| | - Yulian M Volovenko
- Taras Shevchenko National University of Kyiv, Volodymyrska Street 60, Kyiv, 01033, Ukraine
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4
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Blanco-López E, Foubelo F, Retamosa MDG, Sansano JM. Stereoselective Synthesis of Densely Substituted Pyrrolidines via a [3 + 2] Cycloaddition Reaction between Chiral N- tert-Butanesulfinylazadienes and Azomethine Ylides. Org Lett 2023; 25:8051-8056. [PMID: 37791663 PMCID: PMC10661044 DOI: 10.1021/acs.orglett.3c02572] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Indexed: 10/05/2023]
Abstract
The N-tert-butanesulfinylimine group behaves as a suitable electron-withdrawing group in 1-azadienes, allowing the diastereoselective synthesis of densely substituted pyrrolidines by 1,3-dipolar cycloadditions (1,3-DCs) with azomethylene ylides. The use of Ag2CO3 as catalyst has allowed one to obtain a wide variety of proline derivatives with high regio- and diastereoselectivities. Subsequent efficient transformations provide valuable proline derivatives, some of which can be used as organocatalysts. The influence of the N-tert-butanesulfinyl group on the diastereoselectivity was studied by computational methods.
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5
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Xu FF, Chen JQ, Shao DY, Huang PQ. Catalytic enantioselective reductive alkynylation of amides enables one-pot syntheses of pyrrolidine, piperidine and indolizidine alkaloids. Nat Commun 2023; 14:6251. [PMID: 37803030 PMCID: PMC10558451 DOI: 10.1038/s41467-023-41846-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Accepted: 09/13/2023] [Indexed: 10/08/2023] Open
Abstract
The primary objective in synthetic organic chemistry is to develop highly efficient, selective, and versatile synthetic methodologies, which are essential for discovering new drug candidates and agrochemicals. In this study, we present a unified strategy for a one-pot, catalytic enantioselective synthesis of α-alkyl and α,α'-dialkyl pyrrolidine, piperidine, and indolizidine alkaloids using readily available amides and alkynes. This synthesis is enabled by the identification and development of an Ir/Cu/N-PINAP catalyzed highly enantioselective and chemoselective reductive alkynylation of α-unbranched aliphatic amides, which serves as the key reaction. This reaction is combined with Pd-catalyzed tandem reactions in a one-pot approach, enabling the collective, catalytic enantioselective total syntheses of eight alkaloids and an anticancer antipode with 90-98% ee. The methodology's enantio-divergence is exemplified by the one-step access to either enantiomer of alkaloid bgugaine.
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Affiliation(s)
- Fang-Fang Xu
- Department of Chemistry and Fujian Provincial Key Laboratory of Chemical Biology, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian, 361005, P. R. China
| | - Jin-Quan Chen
- Department of Chemistry and Fujian Provincial Key Laboratory of Chemical Biology, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian, 361005, P. R. China
| | - Dong-Yang Shao
- Department of Chemistry and Fujian Provincial Key Laboratory of Chemical Biology, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian, 361005, P. R. China
| | - Pei-Qiang Huang
- Department of Chemistry and Fujian Provincial Key Laboratory of Chemical Biology, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian, 361005, P. R. China.
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6
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Quintavalla A, Carboni D, Simeone M, Lombardo M. Stereoselective Synthesis of α-Disubstituted β-Homoprolines. Org Lett 2023; 25:7067-7071. [PMID: 37729003 PMCID: PMC10546376 DOI: 10.1021/acs.orglett.3c02891] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2023] [Indexed: 09/22/2023]
Abstract
An efficient enantioselective synthesis of chiral α-disubstituted β-homoprolines was developed, starting with the stereodivergent allylation of chiral N-tert-butanesulfinyl imines derived from 4-bromobutanal with indium or zinc and using well-established and reliable synthetic transformations. This methodology allows the easy introduction of different substituents at the α-position of the pyrrolidine scaffold and is characterized by the possibility of switching the absolute configuration of the newly formed stereocenter either by changing the configuration of the tert-butanesufinamide chiral auxiliary or by using a different stereodivergent allylation protocol with the same auxiliary.
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Affiliation(s)
- Arianna Quintavalla
- Alma
Mater Studiorum - University of Bologna, Department of Chemistry “G. Ciamician”, via P. Gobetti 85, 40129 Bologna, Italy
- Center
for Chemical Catalysis - C3, Alma Mater
Studiorum - Università di Bologna, via P. Gobetti 85, 40129 Bologna, Italy
| | - Davide Carboni
- Alma
Mater Studiorum - University of Bologna, Department of Chemistry “G. Ciamician”, via P. Gobetti 85, 40129 Bologna, Italy
- Center
for Chemical Catalysis - C3, Alma Mater
Studiorum - Università di Bologna, via P. Gobetti 85, 40129 Bologna, Italy
| | - Maria Simeone
- Alma
Mater Studiorum - University of Bologna, Department of Chemistry “G. Ciamician”, via P. Gobetti 85, 40129 Bologna, Italy
| | - Marco Lombardo
- Alma
Mater Studiorum - University of Bologna, Department of Chemistry “G. Ciamician”, via P. Gobetti 85, 40129 Bologna, Italy
- Center
for Chemical Catalysis - C3, Alma Mater
Studiorum - Università di Bologna, via P. Gobetti 85, 40129 Bologna, Italy
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7
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Wu BS, Chao YW, Chen HS, Tsai CC. Desymmetrization of Cyclohexadienones through Phase-Transfer-Catalyzed Stereoselective Intramolecular Aza-Michael Addition with Chiral Sulfinamide Nucleophiles. J Org Chem 2023; 88:12835-12843. [PMID: 37562968 DOI: 10.1021/acs.joc.3c01253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/12/2023]
Abstract
This paper reports the desymmetrization of cyclohexadienones through stereoselective intramolecular aza-Michael addition with a tethered chiral sulfinamide nucleophile. The reaction was facilitated by phase-transfer catalysis and produced various nitrogen-containing bicyclic compounds with a yield of up to 93% and a diastereomeric ratio of up to >20:1.
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Affiliation(s)
- Bing-Syuan Wu
- Department of Chemistry, Tunghai University, Taichung City 40704, Taiwan
| | - Yu-Wei Chao
- Department of Chemistry, Tunghai University, Taichung City 40704, Taiwan
| | - Hong-Sing Chen
- Department of Chemistry, Tunghai University, Taichung City 40704, Taiwan
| | - Cheng-Che Tsai
- Department of Chemistry, Tunghai University, Taichung City 40704, Taiwan
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8
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Kesavulu G, Balachandra B, Prasad KR. Lithio Tris(methylthio)methane as Hydroxy/Thio/Aminocarbonyl Anion Equivalent: Asymmetric Synthesis of α-Amino Acid Esters, Thioesters, Amides, and Peptides. Org Lett 2023. [PMID: 37406168 DOI: 10.1021/acs.orglett.3c01969] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/07/2023]
Abstract
The use of lithio tris(methylthio)methane as a hydroxy/thio/amino carbonyl anion equivalent in the synthesis of α-amino acids is reported. Addition of the reagent to nonracemic sulfinimines furnished the α-sulfinamido trithioformates in excellent diastereoselectivity. Unmasking the trithioformates to diverse functionalities, such as α-amino acid thioesters, esters, anilides, amides, and di/tri peptides, without epimerization of chiral centers was accomplished.
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Affiliation(s)
- Gangarajulu Kesavulu
- Department of Organic Chemistry, Indian Institute of Science, Bangalore 560012, India
| | - Biguvu Balachandra
- Department of Organic Chemistry, Indian Institute of Science, Bangalore 560012, India
| | - Kavirayani R Prasad
- Department of Organic Chemistry, Indian Institute of Science, Bangalore 560012, India
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9
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Frolov NA, Vereshchagin AN. Piperidine Derivatives: Recent Advances in Synthesis and Pharmacological Applications. Int J Mol Sci 2023; 24:2937. [PMID: 36769260 PMCID: PMC9917539 DOI: 10.3390/ijms24032937] [Citation(s) in RCA: 40] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Revised: 01/27/2023] [Accepted: 01/29/2023] [Indexed: 02/05/2023] Open
Abstract
Piperidines are among the most important synthetic fragments for designing drugs and play a significant role in the pharmaceutical industry. Their derivatives are present in more than twenty classes of pharmaceuticals, as well as alkaloids. The current review summarizes recent scientific literature on intra- and intermolecular reactions leading to the formation of various piperidine derivatives: substituted piperidines, spiropiperidines, condensed piperidines, and piperidinones. Moreover, the pharmaceutical applications of synthetic and natural piperidines were covered, as well as the latest scientific advances in the discovery and biological evaluation of potential drugs containing piperidine moiety. This review is designed to help both novice researchers taking their first steps in this field and experienced scientists looking for suitable substrates for the synthesis of biologically active piperidines.
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Affiliation(s)
| | - Anatoly N. Vereshchagin
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, 119991 Moscow, Russia
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10
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Zhao Y, Li J, Ma R, He F, Shi H, Duan X, Li H, Xie X, She X. Ten-Step Total Synthesis of (-)-Andranginine. Org Lett 2022; 24:6880-6883. [PMID: 36098548 DOI: 10.1021/acs.orglett.2c02927] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The total synthesis of the indole alkaloid (-)-andranginine has been achieved in 10 steps. Key reactions of the synthesis include a nucleophilic addition of acetylenyl anion to chiral N-sulfinyl imine, an intramolecular N-alkylation reaction to close the C ring, and a dienyne metathesis cascade reaction to construct the DE rings. Meanwhile, 16-epi-(-)-andranginine was also obtained with the developed strategy.
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Affiliation(s)
- Yulong Zhao
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, Gansu P. R. China
| | - Jiaxin Li
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, Gansu P. R. China
| | - Ruize Ma
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, Gansu P. R. China
| | - Feifei He
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, Gansu P. R. China
| | - Hongliang Shi
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, Gansu P. R. China
| | - Xiaoguang Duan
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, Gansu P. R. China
| | - Huilin Li
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, Gansu P. R. China
| | - Xingang Xie
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, Gansu P. R. China
| | - Xuegong She
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, Gansu P. R. China
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11
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Karmakar A, Yu PC, Shajan FJ, Chatare VK, Sabbers WA, Sproviero EM, Andrade RB. Diastereoselective Hydroxylation of N- tert-Butanesulfinyl Imines with 2-(Phenylsulfonyl)-3-phenyloxaziridine (Davis Oxaziridine). Org Lett 2022; 24:6548-6553. [PMID: 36044766 DOI: 10.1021/acs.orglett.2c02513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The diastereoselective α-hydroxylation of N-tert-butanesulfinyl metallodienenamine and metalloenamines with Davis oxaziridine affords α-hydroxy N-sulfinyl imines with 50-88% yield and up to 98:2 diastereomeric ratio. Dramatic changes in diastereoselectivity and stereoselectivity were observed by choice of metal bases. The mechanistic understanding for the switch in diastereoselectivity was assisted by DFT computational modeling, which suggests the facial approach is governed by aza-enolate geometry. A one-pot protocol for the asymmetric synthesis of 1,2-amino alcohols is described.
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Affiliation(s)
- Anupam Karmakar
- Department of Chemistry, Temple University, Philadelphia, Pennsylvania 19122, United States
| | - Po-Cheng Yu
- Department of Chemistry, Temple University, Philadelphia, Pennsylvania 19122, United States
| | - Femil J Shajan
- Department of Chemistry, Temple University, Philadelphia, Pennsylvania 19122, United States
| | - Vijay K Chatare
- Department of Chemistry, Temple University, Philadelphia, Pennsylvania 19122, United States
| | - William A Sabbers
- Department of Chemistry, Temple University, Philadelphia, Pennsylvania 19122, United States
| | - Eduardo M Sproviero
- Department of Chemistry, Temple University, Philadelphia, Pennsylvania 19122, United States
| | - Rodrigo B Andrade
- Department of Chemistry, Temple University, Philadelphia, Pennsylvania 19122, United States
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12
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Abstract
![]()
A synthetic approach
toward densely substituted enantiopure cyclic
sulfinamides possessing up to four consecutive stereogenic centers
was developed based on a completely diastereoselective SN2′ cyclization/tert-Bu cleavage sequence.
Diastereospecific transformation of the obtained scaffold into chiral
SVI derivatives such as sulfoximines and sulfonimidamides
is demonstrated.
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Affiliation(s)
- Glebs Jersovs
- Latvian Institute of Organic Synthesis, Aizkraukles 21, Riga LV-1006, Latvia.,Department of Chemistry, University of Latvia, Jelgavas 1, Riga LV-1004, Latvia
| | - Matiss Bojars
- Latvian Institute of Organic Synthesis, Aizkraukles 21, Riga LV-1006, Latvia.,Department of Chemistry, University of Latvia, Jelgavas 1, Riga LV-1004, Latvia
| | - Pavel A Donets
- Latvian Institute of Organic Synthesis, Aizkraukles 21, Riga LV-1006, Latvia
| | - Edgars Suna
- Latvian Institute of Organic Synthesis, Aizkraukles 21, Riga LV-1006, Latvia.,Department of Chemistry, University of Latvia, Jelgavas 1, Riga LV-1004, Latvia
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13
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Quintavalla A, Veronesi R, Zambardino D, Carboni D, Lombardo M. Diastereoselective Synthesis of Chiral Oxathiazine 2‐Oxide Scaffolds as Sulfinyl Transfer Agents. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Arianna Quintavalla
- Alma Mater Studiorum – University of Bologna Department of Chemistry “G. Ciamician” Center for Chemical Catalysis-C3 Via Selmi 2 40126 Bologna Italy
| | - Ruben Veronesi
- Alma Mater Studiorum – University of Bologna Department of Chemistry “G. Ciamician” Center for Chemical Catalysis-C3 Via Selmi 2 40126 Bologna Italy
| | - Demetra Zambardino
- Alma Mater Studiorum – University of Bologna Department of Chemistry “G. Ciamician” Center for Chemical Catalysis-C3 Via Selmi 2 40126 Bologna Italy
| | - Davide Carboni
- Alma Mater Studiorum – University of Bologna Department of Chemistry “G. Ciamician” Center for Chemical Catalysis-C3 Via Selmi 2 40126 Bologna Italy
| | - Marco Lombardo
- Alma Mater Studiorum – University of Bologna Department of Chemistry “G. Ciamician” Center for Chemical Catalysis-C3 Via Selmi 2 40126 Bologna Italy
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14
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You GY, Liu XF, Fang PW, Liang LF, Dai CH, Feng B. Simple chiral sulfinyl imine–thioether ligands for Pd-catalyzed allylic alkylation. CHEMICAL PAPERS 2022. [DOI: 10.1007/s11696-022-02176-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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15
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Rao CN, Reissig HU. Samarium(II)‐Promoted Cyclizations of Non‐activated Indolyl Sulfinyl Imines to Polycyclic Tertiary Carbinamines. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200264] [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)
- Chintada Nageswara Rao
- Freie Universität Berlin: Freie Universitat Berlin Institut für Chemie und Biochemie 14195 Berlin GERMANY
| | - Hans-Ulrich Reissig
- Freie Universität Berlin Institut für Chemie und Biochemie Takustr. 3 14195 Berlin GERMANY
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16
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Modern Approaches to Synthetic Design of Chiral α-Tertiary Amines Based on Trifluoromethylcontaining Ketimines: A Review. THEOR EXP CHEM+ 2022. [DOI: 10.1007/s11237-022-09710-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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17
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Lin LZ, Yang S, Liu WH, Shie JJ. Dichotomous Selectivity in Indium-Mediated Aza-Barbier-Type Allylation of 2- N-Acetyl Glycosyl Sulfinylimines in Brine: Convenient Access to Potent Anti-Influenza Agents. J Org Chem 2022; 87:2324-2335. [PMID: 35075895 DOI: 10.1021/acs.joc.1c02121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A highly diastereoselective indium-mediated allylation of 2-N-acetyl glycosyl sulfinylimines in brine under mild reaction conditions is reported. The method allows the achievement of a highly remarkable dichotomous selectivity for substrates, providing a single diastereoisomer of the product in 80-98% yield. With chiral (S)-homoallylic sulfinamide (RS)-5 and (RS)-8 formed as key intermediates, two potent anti-influenza agents, zanamivir and zanaphosphor, were synthesized in 50% and 41% overall yields, respectively.
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Affiliation(s)
- Long-Zhi Lin
- Institute of Chemistry, Academia Sinica, Taipei 11529, Taiwan
| | - Sheng Yang
- Institute of Chemistry, Academia Sinica, Taipei 11529, Taiwan
| | - Wan-Hsuan Liu
- Institute of Chemistry, Academia Sinica, Taipei 11529, Taiwan
| | - Jiun-Jie Shie
- Institute of Chemistry, Academia Sinica, Taipei 11529, Taiwan
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18
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Li Z, Wang N, Liu J, Mei H, Soloshonok VA, Han J. Synthesis of Isothiazoles through N-Propargylsulfinylamide: TFA-Promoted Sulfinyl Group-Involved Intramolecular Cyclization. Org Lett 2021; 23:6941-6945. [PMID: 34423993 DOI: 10.1021/acs.orglett.1c02538] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A new reactivity mode of tert-butanesulfinamide has been developed, which proceeds through C-S and O-S bond cleavage of N-propargyl tert-butanesulfinylamide allowing rapid assembly of poly functionalized isothiazoles. This intramolecular cyclization reaction could be conducted under mild and convenient conditions and tolerates several fluoroalkyl and substituted phenyl groups with good chemical yields. This reaction not only represents a new reactivity of tert-butanesulfinamide but also provides an easy strategy for the synthesis of isothiazoles.
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Affiliation(s)
- Ziyi Li
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Nana Wang
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Jiang Liu
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Haibo Mei
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Vadim A Soloshonok
- Department of Organic Chemistry I, Faculty of Chemistry, University of the Basque Country UPV/EHU, Paseo Manuel Lardizábal 3, 20018 San Sebastián, Spain.,IKERBASQUE, Basque Foundation for Science, María Díaz de Haro 3, Plaza Bizkaia, 48013 Bilbao, Spain
| | - Jianlin Han
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
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