1
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Oh H, Kim H, Kim I. Regioselective Access to 1,2,4-Triazole-Fused N-Heterocycle, Pyrrolo[1,2- a][1,2,4]triazolo[5,1- c]pyrazine, via Double Dehydrative Cyclizations. J Org Chem 2023; 88:11748-11761. [PMID: 37526505 DOI: 10.1021/acs.joc.3c01044] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/02/2023]
Abstract
A highly efficient and regioselective approach to a novel 1,2,4-triazole-fused N-heterocyclic scaffold, pyrrolo[1,2-a][1,2,4]triazolo[3,4-c]pyrazine, was established by base-promoted reaction of pyrrole-2-carbonitrile-derived substrate with acyl hydrazide where domino double ring closures comprised of enamine formation, attack on nitrile, and cyclodehydration enabled sequential construction of pyrazine and 1,2,4-triazole ring systems with formation of three C-N bonds.
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Affiliation(s)
- Hyunjin Oh
- College of Pharmacy and Yonsei Institute of Pharmaceutical Sciences, Yonsei University, 85 Songdogwahak-ro, Yeonsu-gu, Incheon 21983, Republic of Korea
| | - Hyeyeon Kim
- College of Pharmacy and Yonsei Institute of Pharmaceutical Sciences, Yonsei University, 85 Songdogwahak-ro, Yeonsu-gu, Incheon 21983, Republic of Korea
| | - Ikyon Kim
- College of Pharmacy and Yonsei Institute of Pharmaceutical Sciences, Yonsei University, 85 Songdogwahak-ro, Yeonsu-gu, Incheon 21983, Republic of Korea
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2
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Chen Y, He C, Chen J, Zhang G, Yu Y. Palladium(II)-catalyzed tandem reaction for the assembly of 1,3-disubstituted pyrrolo[1,2-α]pyrazines. SYNTHETIC COMMUN 2022. [DOI: 10.1080/00397911.2022.2112605] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
Affiliation(s)
- Yitong Chen
- Zhejiang Province Key Laboratory of Anti-cancer Drug Research, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, P.R. of China
| | - Chang He
- Zhejiang Province Key Laboratory of Anti-cancer Drug Research, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, P.R. of China
| | - Jun Chen
- Department of Pharmacy, Yongkang First People’s Hospital Affiliated to Hangzhou Medical College, Yongkang, P.R. of China
| | - Guolin Zhang
- Zhejiang Province Key Laboratory of Anti-cancer Drug Research, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, P.R. of China
| | - Yongping Yu
- Zhejiang Province Key Laboratory of Anti-cancer Drug Research, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, P.R. of China
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3
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Joshi DR, Kim I. Synthesis of Poly‐Functionalized Indolizines via [5+1] Annulative Access to Pyridines. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100844] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Dirgha Raj Joshi
- College of Pharmacy and Yonsei Institute of Pharmaceutical Sciences Yonsei University 85 Songdogwahak-ro, Yeonsu-gu Incheon 21983 Republic of Korea
| | - Ikyon Kim
- College of Pharmacy and Yonsei Institute of Pharmaceutical Sciences Yonsei University 85 Songdogwahak-ro, Yeonsu-gu Incheon 21983 Republic of Korea
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4
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Li J, Zhang S, Lao J, Zou H. Direct Transition-Metal Free Benzene C-H Functionalization by Intramolecular Non-Nitroarene Nucleophilic Aromatic Substitution of Hydrogen to Diverse AIEgens. CHEMSUSCHEM 2021; 14:3208-3218. [PMID: 34132487 DOI: 10.1002/cssc.202101109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Revised: 06/15/2021] [Indexed: 06/12/2023]
Abstract
Direct C(sp2 )-H functionalization through nitroarene-triggered nucleophilic aromatic substitution of hydrogen (SNArH ) has attracted growing attention, owing to its high efficiency and low carbon footprint. In this study, non-nitro-group-assisted SN ArH has been developed for direct benzene functionalization in one pot under mild conditions. The electron-withdrawing carbonyl group and the halide or trifluoromethyl group on the phenyl ring enable the σH adduct formation to fulfill the intramolecular C(sp2 )-C(sp3 ) bond construction. Notably, the cyano group serves as both the electron-withdrawing group to activate the C(sp3 )-H bond and the leaving group to fulfill the β-elimination. Three series of pyrrolo[1,2-b]isoquinolinones, as well as unexpected rearrangement products 3-(1H-pyrrol-2-yl)-1H-inden-1-ones are regioselectively obtained through a simple and efficient base-catalyzed one-pot strategy. Mechanistic studies indicate that the σH adduct from carbanion addition to hydrogen serves as the sole intermediate for all of the aforementioned transformations. These molecules show intense luminescence and the subsequent one-step structural modification results in the aggregation-induced emission (AIE) derivatives with redshifted full-color tunable fluorescence, large Stokes shifts, and good quantum yields. Further living cell imaging investigations suggest their potential application as specific bioprobes for lipid droplet localization and visualization.
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Affiliation(s)
- Jinbiao Li
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, P. R. China
| | - Shuaizhong Zhang
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, P. R. China
| | - Jiaxin Lao
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, P. R. China
| | - Hongbin Zou
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, P. R. China
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5
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Joshi DR, Kim I. Michael-Aldol Double Elimination Cascade to Make Pyridines: Use of Chromone for the Synthesis of Indolizines. J Org Chem 2021; 86:10235-10248. [PMID: 34292727 DOI: 10.1021/acs.joc.1c00981] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A domino Michael-aldol double elimination route to indolizines having two different acyl groups at the C5 and C7 positions is described where chromone is employed as a two-carbon unit for the synthesis of a pyridine moiety for the first time. Various analogues were readily accessed in good yields under metal-free and eco-friendly conditions. Further manipulation of the resulting products allowed entry to novel indolizine-heterocycle adducts, which are difficult to access by other methods.
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Affiliation(s)
- Dirgha Raj Joshi
- College of Pharmacy and Yonsei Institute of Pharmaceutical Sciences, Yonsei University, 85 Songdogwahak-ro, Yeonsu-gu, Incheon, 21983, Republic of Korea
| | - Ikyon Kim
- College of Pharmacy and Yonsei Institute of Pharmaceutical Sciences, Yonsei University, 85 Songdogwahak-ro, Yeonsu-gu, Incheon, 21983, Republic of Korea
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6
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Kim S, Lee JH, Yoon SH, Kim I. A regioselective [4 + 2] annulation approach to 5-acylindolizine-7-carbonitriles: generation of poly-substituted pyridines. Org Biomol Chem 2021; 19:5806-5817. [PMID: 34113946 DOI: 10.1039/d1ob00788b] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The reaction of β-ketonitrile and N-substituted pyrrole-2-carboxaldehyde in the presence of piperidinium acetate in CH3CN permitted regioselective access to 5-acylindolizine-7-carbonitrile through a domino Knoevenagel condensation-intramolecular aldol cyclization sequence. A wide range of new indolizine derivatives with a poly-functionalized pyridine moiety were readily synthesized in an atom-economical fashion, thereby expanding the indolizine chemical space for further applications.
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Affiliation(s)
- Sunmi Kim
- College of Pharmacy and Yonsei Institute of Pharmaceutical Sciences, Yonsei University, 85 Songdogwahak-ro, Yeonsu-gu, Incheon, 21983, Republic of Korea.
| | - Jeong Hwa Lee
- College of Pharmacy and Yonsei Institute of Pharmaceutical Sciences, Yonsei University, 85 Songdogwahak-ro, Yeonsu-gu, Incheon, 21983, Republic of Korea.
| | - Seok Hyun Yoon
- Graduate Program of Industrial Pharmaceutical Sciences, Yonsei University, 85 Songdogwahak-ro, Yeonsu-gu, Incheon, 21983, Republic of Korea
| | - Ikyon Kim
- College of Pharmacy and Yonsei Institute of Pharmaceutical Sciences, Yonsei University, 85 Songdogwahak-ro, Yeonsu-gu, Incheon, 21983, Republic of Korea.
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7
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Kuzu B, Gül S, Tan M, Menges N, Balci M. Synthesis of Indolizines by Dimerization of
N‐
Propargylated Pyrroles via Allene Intermediates. ChemistrySelect 2021. [DOI: 10.1002/slct.202100045] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Burak Kuzu
- Pharmaceutical Chemistry Section Van Yüzüncü Yil University 65080 Van Turkey
| | - Sergen Gül
- Pharmaceutical Chemistry Section Van Yüzüncü Yil University 65080 Van Turkey
| | - Meltem Tan
- Pharmaceutical Chemistry Section Van Yüzüncü Yil University 65080 Van Turkey
- Department of Chemistry Middle East Technical University 06100 Ankara Turkey
| | - Nurettin Menges
- Pharmaceutical Chemistry Section Van Yüzüncü Yil University 65080 Van Turkey
- Department of Chemistry Middle East Technical University 06100 Ankara Turkey
| | - Metin Balci
- Department of Chemistry Middle East Technical University 06100 Ankara Turkey
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8
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Joshi DR, Seo Y, Heo Y, Park SH, Lee Y, Namkung W, Kim I. Domino [4 + 2] Annulation Access to Quinone-Indolizine Hybrids: Anticancer N-Fused Polycycles. J Org Chem 2020; 85:10994-11005. [PMID: 32674567 DOI: 10.1021/acs.joc.0c01291] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
A highly efficient synthetic route to new quinone-indolizine hybrids was accomplished from quinones and N-substituted pyrrole-2-carboxaldehydes via a domino Michael addition-aldol condensation-aromatization sequence through which the central pyridine ring was constructed in atom-economical and environment-friendly manner. Post modification of the resulting products was also demonstrated, enabling further expansion of this heterocyclic chemical space. Biological evaluation of the quinone-indolizine hybrids revealed potent anticancer effects in human prostate adenocarcinoma cells (PC-3) and oral adenosquamous carcinoma cells (CAL-27).
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Affiliation(s)
- Dirgha Raj Joshi
- College of Pharmacy and Yonsei Institute of Pharmaceutical Sciences, Yonsei University, 85 Songdogwahak-ro, Yeonsu-gu, Incheon 21983, Republic of Korea
| | - Yohan Seo
- College of Pharmacy and Yonsei Institute of Pharmaceutical Sciences, Yonsei University, 85 Songdogwahak-ro, Yeonsu-gu, Incheon 21983, Republic of Korea
| | - Yunkyung Heo
- College of Pharmacy and Yonsei Institute of Pharmaceutical Sciences, Yonsei University, 85 Songdogwahak-ro, Yeonsu-gu, Incheon 21983, Republic of Korea
| | - So-Hyeon Park
- Graduate Program of Industrial Pharmaceutical Science, Yonsei University, Incheon 21983, Republic of Korea
| | - Yechan Lee
- Graduate Program of Industrial Pharmaceutical Science, Yonsei University, Incheon 21983, Republic of Korea
| | - Wan Namkung
- College of Pharmacy and Yonsei Institute of Pharmaceutical Sciences, Yonsei University, 85 Songdogwahak-ro, Yeonsu-gu, Incheon 21983, Republic of Korea.,Interdisciplinary Program of Integrated OMICS for Biomedical Science Graduate School, Yonsei University, Seoul, 03722, Republic of Korea
| | - Ikyon Kim
- College of Pharmacy and Yonsei Institute of Pharmaceutical Sciences, Yonsei University, 85 Songdogwahak-ro, Yeonsu-gu, Incheon 21983, Republic of Korea
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Li J, Zhang S, Zou H. One-pot chemoselective domino condensation to form a fused pyrrolo–pyrazino–indolizine framework: discovery of novel AIE molecules. Org Chem Front 2020. [DOI: 10.1039/d0qo00274g] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
A fused pyrrolo–pyrazino–indolizine (5-6-6-5) framework with excellent AIE properties and application in living cell imaging was constructed via chemoselective domino condensation.
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Affiliation(s)
- Jinbiao Li
- College of Pharmaceutical Sciences
- Zhejiang University
- Hangzhou
- P. R. China
| | - Shuaizhong Zhang
- College of Pharmaceutical Sciences
- Zhejiang University
- Hangzhou
- P. R. China
| | - Hongbin Zou
- College of Pharmaceutical Sciences
- Zhejiang University
- Hangzhou
- P. R. China
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10
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Sari O, Seybek AF, Kaya S, Menges N, Erdem SS, Balci M. Mechanistic Insights into the Reaction of
N
‐Propargylated Pyrrole‐ and Indole‐Carbaldehyde with Ammonia, Alkyl Amines, and Branched Amines: A Synthetic and Theoretical Investigation. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900084] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Ozlem Sari
- Department of Chemistry Middle East Technical University 06800 Ankara Turkey
- Department of Chemistry Kırşehir Ahi Evran University 40100 Kırşehir Turkey
| | - Ali Fatih Seybek
- Department of Chemistry Middle East Technical University 06800 Ankara Turkey
| | - Serdal Kaya
- Department of Chemistry Middle East Technical University 06800 Ankara Turkey
- Department of Chemistry Giresun University 28200 Giresun Turkey
| | - Nurettin Menges
- Department of Chemistry Middle East Technical University 06800 Ankara Turkey
- Faculty of Pharmacy Van Yüzüncü Yıl University 65080, Van Turkey
| | - Safiye Sag Erdem
- Department of Chemistry Marmara University 34722 Istanbul Turkey
| | - Metin Balci
- Department of Chemistry Middle East Technical University 06800 Ankara Turkey
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