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Chung CY, Tseng CC, Li SM, Tsai SE, Lin HY, Wong FF. Structural Identification between Phthalazine-1,4-Diones and N-Aminophthalimides via Vilsmeier Reaction: Nitrogen Cyclization and Tautomerization Study. Molecules 2021; 26:molecules26102907. [PMID: 34068439 PMCID: PMC8153572 DOI: 10.3390/molecules26102907] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2021] [Revised: 05/10/2021] [Accepted: 05/10/2021] [Indexed: 11/29/2022] Open
Abstract
N-Aminophthalimides and phthalazine 1,4-diones were synthesized from isobenzofuran-1,3-dione, isoindoline-1,3-dione, furo [3,4-b] pyrazine-5,7-dione, or 1H-pyrrolo [3,4-c] pyridine-1,3-dione with monohydrate hydrazine to carry out the 5-exo or 6-endo nitrogen cyclization under the different reaction conditions. Based on the control experimental results, 6-endo thermodynamic hydrohydrazination and kinetical 5-exo cyclization reactions were individually selective formation. Subsequently, Vilsmeier amidination derivatization was successfully developed to probe the structural divergence between N-aminophthalimide 2 and phthalazine 1,4-dione 3. On the other hand, the best tautomerization of N-aminophthalimide to diazinone was also determined under acetic acid mediated solution.
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Affiliation(s)
- Cheng-Yen Chung
- School of Pharmacy, China Medical University, No. 91, Hsueh-Shih Rd., Taichung 40402, Taiwan; (C.-Y.C.); (C.-C.T.); (S.-E.T.)
- The Ph.D. Program for Biotech Pharmaceutical Industry and School of Pharmacy, China Medical University, No. 91, Hsueh-Shih Rd., Taichung 40402, Taiwan
| | - Ching-Chun Tseng
- School of Pharmacy, China Medical University, No. 91, Hsueh-Shih Rd., Taichung 40402, Taiwan; (C.-Y.C.); (C.-C.T.); (S.-E.T.)
- The Ph.D. Program for Biotech Pharmaceutical Industry and School of Pharmacy, China Medical University, No. 91, Hsueh-Shih Rd., Taichung 40402, Taiwan
| | - Sin-Min Li
- Institute of New Drug Development, China Medical University, No. 91 Hsueh-Shih Rd., Taichung 40402, Taiwan;
| | - Shuo-En Tsai
- School of Pharmacy, China Medical University, No. 91, Hsueh-Shih Rd., Taichung 40402, Taiwan; (C.-Y.C.); (C.-C.T.); (S.-E.T.)
- The Ph.D. Program for Biotech Pharmaceutical Industry and School of Pharmacy, China Medical University, No. 91, Hsueh-Shih Rd., Taichung 40402, Taiwan
| | - Hui-Yi Lin
- School of Pharmacy, China Medical University, No. 91, Hsueh-Shih Rd., Taichung 40402, Taiwan; (C.-Y.C.); (C.-C.T.); (S.-E.T.)
- Correspondence: (H.-Y.L.); or (F.F.W.); Tel.: +886-422-053-366 (ext. 5112) (H.-Y.L.); +886-422-053-366 (ext. 5603) (F.F.W.); Fax: +886-422-078-083 (H.-Y.L. & F.F.W.)
| | - Fung Fuh Wong
- School of Pharmacy, China Medical University, No. 91, Hsueh-Shih Rd., Taichung 40402, Taiwan; (C.-Y.C.); (C.-C.T.); (S.-E.T.)
- Correspondence: (H.-Y.L.); or (F.F.W.); Tel.: +886-422-053-366 (ext. 5112) (H.-Y.L.); +886-422-053-366 (ext. 5603) (F.F.W.); Fax: +886-422-078-083 (H.-Y.L. & F.F.W.)
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Renault K, Guillou C, Renard PY, Sabot C. Investigation of tetrazine reactivity towards C-nucleophiles: pyrazolone-based modification of biomolecules. Org Biomol Chem 2019; 17:388-396. [PMID: 30601507 DOI: 10.1039/c8ob02108b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Chemoselective, biocompatible ligation reactions are the key components for efficient and modular access to biomolecular scaffolds. Tetrazine ligation leads to the formation of a mixture of isomers, which makes reaction monitoring, purification and characterization of conjugates difficult. We report herein a modified tetrazine ligation strategy based on the use of a pyrazolone coupling partner, which provides a single molecule conjugate.
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Affiliation(s)
- Kévin Renault
- Normandie Univ, CNRS, UNIROUEN, INSA Rouen, COBRA (UMR 6014), 76000 Rouen, France.
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Yen WP, Tsai SE, Uramaru N, Takayama H, Wong FF. One-Flask Synthesis of Pyrazolo[3,4-d]pyrimidines from 5-Aminopyrazoles and Mechanistic Study. Molecules 2017; 22:molecules22050820. [PMID: 28509884 PMCID: PMC6154590 DOI: 10.3390/molecules22050820] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2017] [Revised: 05/11/2017] [Accepted: 05/11/2017] [Indexed: 11/16/2022] Open
Abstract
A novel one-flask synthetic method was developed in which 5-aminopyrazoles were reacted with N,N-substituted amides in the presence of PBr3. Hexamethyldisilazane was then added to perform heterocyclization to produce the corresponding pyrazolo[3,4-d]pyrimidines in suitable yields. These one-flask reactions thus involved Vilsmeier amidination, imination reactions, and the sequential intermolecular heterocyclization. To study the reaction mechanism, a series of 4-formyl-1,3-diphenyl-1H-pyrazol-5-yl-N,N-disubstituted formamidines, which were conceived as the chemical equivalent of 4-(iminomethyl)-1,3-diphenyl-1H-pyrazol-5-yl-formamidine, were prepared and successfully converted into pyrazolo[3,4-d]pyrimidines. The experiments demonstrated that the reaction intermediates were the chemical equivalents of 4-(iminomethyl)-1,3-diphenyl-1H-pyrazol-5-yl)formamidines. The rate of the reaction could be described as being proportional to the reactivity of amine reactants during intermolecular heterocyclization, especially when hexamethyldisilazane was used.
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Affiliation(s)
- Wan-Ping Yen
- School of Pharmacy, China Medical University, No. 91 Hsueh-Shih Rd., Taichung 40402, Taiwan.
- Program for Biotech Pharmaceutical Industry, China Medical University, No. 91 Hsueh-Shih Rd., Taichung 40402, Taiwan.
| | - Shuo-En Tsai
- School of Pharmacy, China Medical University, No. 91 Hsueh-Shih Rd., Taichung 40402, Taiwan.
- Program for Biotech Pharmaceutical Industry, China Medical University, No. 91 Hsueh-Shih Rd., Taichung 40402, Taiwan.
| | - Naoto Uramaru
- Department of Environmental Science, Nihon Pharmaceutical University, Komuro Inamachi Kita-adachi-gun, Saitama-ken 10281, Japan.
| | - Hiroyuki Takayama
- Department of Medico Pharmaceutical Science, Nihon Pharmaceutical University, Komuro Inamachi Kita-adachi-gun, Saitama-ken 10281, Japan.
| | - Fung Fuh Wong
- School of Pharmacy, China Medical University, No. 91 Hsueh-Shih Rd., Taichung 40402, Taiwan.
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Chen Z, Cao Y, Tian Z, Zhou X, Xu W, Yang J, Teng H. An efficient reduction of N -substituted carbonylimidazolides into formamides by NaBH 4. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.04.072] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Kaliraj K, Xia L, Edison TNJI, Lee YR. Straightforward synthesis of diverse dipyrazolylmethane derivatives and their application for fluorescence sensing of Cu 2+ ions. RSC Adv 2016. [DOI: 10.1039/c6ra10530k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Various dipyrazolylmethanes were synthesized and nitro-substituted compound displayed an excellent turn-off fluorescence sensing property for the detection of Cu2+ ions.
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Affiliation(s)
- Kaliappan Kaliraj
- School of Chemical Engineering
- Yeungnam University
- Gyeongsan 712-749
- Republic of Korea
| | - Likai Xia
- School of Chemical Engineering
- Yeungnam University
- Gyeongsan 712-749
- Republic of Korea
| | | | - Yong Rok Lee
- School of Chemical Engineering
- Yeungnam University
- Gyeongsan 712-749
- Republic of Korea
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Lu SH, Liu PL, Wong FF. Vilsmeier reagent-mediated synthesis of 6-[(formyloxy)methyl]-pyrazolopyrimidines via a one-pot multiple tandem reaction. RSC Adv 2015. [DOI: 10.1039/c5ra07707a] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Vilsmeier reagent-mediated synthesis of pyrazolopyrimidines.
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Affiliation(s)
- Shi-Han Lu
- School of Pharmacy
- China Medical University
- Taichung 40402
- Taiwan
- Graduate Institute of Pharmaceutical Chemistry
| | - Po-Lin Liu
- Graduate Institute of Pharmaceutical Chemistry
- China Medical University
- Taichung 40402
- Taiwan
| | - Fung Fuh Wong
- School of Pharmacy
- China Medical University
- Taichung 40402
- Taiwan
- Graduate Institute of Pharmaceutical Chemistry
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Huang JJ, Lu SH, Chung YH, Wong FF. Vilsmeier–Haack reagent-promoted formyloxylation of α-chloro-N-arylacetamides by formamide. RSC Adv 2015. [DOI: 10.1039/c5ra05779e] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
α-Formyloxylation of α-chloro-N-arylacetamides.
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Affiliation(s)
- Jiann-Jyh Huang
- Department of Applied Chemistry
- National Chiayi University
- Chiayi City 60004
- Taiwan
- Center of Energy Research & Sensor Technology
| | - Shi-Han Lu
- School of Pharmacy
- China Medical University
- Taichung 40402
- Taiwan
| | - Yu Hsuan Chung
- Department of Applied Chemistry
- National Chiayi University
- Chiayi City 60004
- Taiwan
- Center of Energy Research & Sensor Technology
| | - Fung Fuh Wong
- School of Pharmacy
- China Medical University
- Taichung 40402
- Taiwan
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Verardo G, Gorassini A. Sodium Borohydride Reduction of Carbamoyl Azide Function: A Synthesis of N-Protected N′-Formyl- gem-diaminoalkyl Derivatives. European J Org Chem 2013. [DOI: 10.1002/ejoc.201300442] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Enders D, Grossmann A, Gieraths B, Düzdemir M, Merkens C. Organocatalytic one-pot asymmetric synthesis of 4H,5H-pyrano[2,3-c]pyrazoles. Org Lett 2012; 14:4254-7. [PMID: 22852800 DOI: 10.1021/ol301983f] [Citation(s) in RCA: 89] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
An efficient one pot asymmetric synthesis of tetrahydropyrano[2,3-c]pyrazoles has been developed. This class of biologically active heterocycles can be obtained via a secondary amine catalyzed asymmetric Michael/Wittig/oxa-Michael reaction sequence. Remarkably, the title compounds were accessible in good to very good yields and very good to excellent enantioselectivities after a single purification step.
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Affiliation(s)
- Dieter Enders
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany.
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