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  1. Artikel: Silver-catalyzed decarboxylative cyclization for the synthesis of substituted pyrazoles from 1,2-diaza-1,3-dienes and α-keto acids

    Katiyar, Sarita / Kumar, Abhishek / Sashidhara, Koneni V.

    Chemical communications. 2022 June 28, v. 58, no. 52

    2022  

    Abstract: A silver-catalyzed decarboxylative cyclization process has been developed for the synthesis of substituted pyrazoles from the readily available 1,2-diaza-1,3-dienes and α-keto acids. Under the optimized conditions, a series of multisubstituted pyrazoles ... ...

    Abstract A silver-catalyzed decarboxylative cyclization process has been developed for the synthesis of substituted pyrazoles from the readily available 1,2-diaza-1,3-dienes and α-keto acids. Under the optimized conditions, a series of multisubstituted pyrazoles were well prepared in moderate to good yields. In addition, the synthetic utility of this protocol has been demonstrated by synthesizing analogs of FDA approved drugs such as anti-inflammatory drug, lonazolac and antiobesity drug, rimonabant.
    Schlagwörter acids ; chemical communication ; pyrazoles
    Sprache Englisch
    Erscheinungsverlauf 2022-0628
    Umfang p. 7297-7300.
    Erscheinungsort The Royal Society of Chemistry
    Dokumenttyp Artikel
    ZDB-ID 1472881-3
    ISSN 1364-548X ; 1359-7345 ; 0009-241X
    ISSN (online) 1364-548X
    ISSN 1359-7345 ; 0009-241X
    DOI 10.1039/d2cc01793h
    Datenquelle NAL Katalog (AGRICOLA)

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  2. Artikel ; Online: Silver-catalyzed decarboxylative cyclization for the synthesis of substituted pyrazoles from 1,2-diaza-1,3-dienes and α-keto acids.

    Katiyar, Sarita / Kumar, Abhishek / Sashidhara, Koneni V

    Chemical communications (Cambridge, England)

    2022  Band 58, Heft 52, Seite(n) 7297–7300

    Abstract: A silver-catalyzed decarboxylative cyclization process has been developed for the synthesis of substituted pyrazoles from the readily available 1,2-diaza-1,3-dienes and α-keto acids. Under the optimized conditions, a series of multisubstituted pyrazoles ... ...

    Abstract A silver-catalyzed decarboxylative cyclization process has been developed for the synthesis of substituted pyrazoles from the readily available 1,2-diaza-1,3-dienes and α-keto acids. Under the optimized conditions, a series of multisubstituted pyrazoles were well prepared in moderate to good yields. In addition, the synthetic utility of this protocol has been demonstrated by synthesizing analogs of FDA approved drugs such as anti-inflammatory drug, lonazolac and antiobesity drug, rimonabant.
    Mesh-Begriff(e) Catalysis ; Cyclization ; Keto Acids ; Molecular Structure ; Polyenes ; Pyrazoles ; Silver
    Chemische Substanzen Keto Acids ; Polyenes ; Pyrazoles ; Silver (3M4G523W1G)
    Sprache Englisch
    Erscheinungsdatum 2022-06-28
    Erscheinungsland England
    Dokumenttyp Journal Article
    ZDB-ID 1472881-3
    ISSN 1364-548X ; 1359-7345 ; 0009-241X
    ISSN (online) 1364-548X
    ISSN 1359-7345 ; 0009-241X
    DOI 10.1039/d2cc01793h
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  3. Artikel ; Online: PIDA-mediated oxidative aromatic C[sbnd]N bond cleavage: Efficient methodology for the synthesis of 1,2-diaza-1,3-dienes under ambient conditions

    Kumar, Abhishek / Katiyar, Sarita / Kumar Jaiswal, Arvind / Kant, Ruchir / Sashidhara, Koneni V.

    Tetrahedron letters 2021 Aug. 3, v. 77, p. 153252

    2021  , Seite(n) 153252

    Abstract: A series of functionalized 1,2-diaza-1,3-diene derivatives were synthesized from 5–aminopyrazoles via oxidative cleavage of the aromatic CN bond under transition metal-free conditions. A control experiment revealed that the presence of a free NH₂ group ... ...

    Abstract A series of functionalized 1,2-diaza-1,3-diene derivatives were synthesized from 5–aminopyrazoles via oxidative cleavage of the aromatic CN bond under transition metal-free conditions. A control experiment revealed that the presence of a free NH₂ group on the 5–aminopyrazole is important for the reaction. The utility of this valuable synthon for building diverse heterocyclic structures is also presented, which otherwise would be difficult to access using conventional methods.
    Schlagwörter Metal-free ; Hypervalent iodine ; Selective CN bond cleavage ; Ambient temperature
    Sprache Englisch
    Erscheinungsverlauf 2021-0803
    Umfang p. 153252
    Erscheinungsort Pergamon Press.
    Dokumenttyp Artikel ; Online
    ZDB-ID 204287-3
    ISSN 1873-3581 ; 0040-4039
    ISSN (online) 1873-3581
    ISSN 0040-4039
    DOI 10.1016/j.tetlet.2021.153252
    Datenquelle NAL Katalog (AGRICOLA)

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  4. Artikel ; Online: Design, synthesis, and biological evaluation of quinoline-piperazine/pyrrolidine derivatives as possible antileishmanial agents.

    Katiyar, Sarita / Ramalingam, Karthik / Kumar, Abhishek / Ansari, Alisha / Bisen, Amol Chhatrapati / Mishra, Garvita / Sanap, Sachin Nashik / Bhatta, Rabi Sankar / Purkait, Bidyut / Goyal, Neena / Sashidhara, Koneni V

    European journal of medicinal chemistry

    2023  Band 261, Seite(n) 115863

    Abstract: In pursuance of our efforts to expand the scope of novel antileishmanial entities, a series of thirty-five quinoline-piperazine/pyrrolidine, and other heterocyclic amine derivatives were synthesized via a molecular hybridization approach and examined ... ...

    Abstract In pursuance of our efforts to expand the scope of novel antileishmanial entities, a series of thirty-five quinoline-piperazine/pyrrolidine, and other heterocyclic amine derivatives were synthesized via a molecular hybridization approach and examined against intracellular amastigotes of luciferase-expressing Leishmania donovani. The preliminary in vitro screening suggests that twelve compounds in the series exhibited better inhibition against amastigote form with good IC
    Mesh-Begriff(e) Antiprotozoal Agents ; Leishmania donovani ; Piperazine ; Quinolines/pharmacology
    Chemische Substanzen Antiprotozoal Agents ; Piperazine (1RTM4PAL0V) ; Quinolines ; pyrrolidine (LJU5627FYV)
    Sprache Englisch
    Erscheinungsdatum 2023-10-07
    Erscheinungsland France
    Dokumenttyp Journal Article
    ZDB-ID 188597-2
    ISSN 1768-3254 ; 0009-4374 ; 0223-5234
    ISSN (online) 1768-3254
    ISSN 0009-4374 ; 0223-5234
    DOI 10.1016/j.ejmech.2023.115863
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  5. Artikel ; Online: Discovery, SAR and mechanistic studies of quinazolinone-based acetamide derivatives in experimental visceral leishmaniasis.

    Ansari, Alisha / Seth, Anuradha / Dutta, Mukul / Qamar, Tooba / Katiyar, Sarita / Jaiswal, Arvind K / Rani, Ankita / Majhi, Swetapadma / Kumar, Mukesh / Bhatta, Rabi S / Guha, Rajdeep / Mitra, Kalyan / Sashidhara, Koneni V / Kar, Susanta

    European journal of medicinal chemistry

    2023  Band 257, Seite(n) 115524

    Abstract: Towards identification of novel therapeutic candidates, a series of quinazolinone-based acetamide derivatives were synthesized and assessed for their anti-leishmanial efficacy. Amongst synthesized derivatives, compounds F12, F27 and F30 demonstrated ... ...

    Abstract Towards identification of novel therapeutic candidates, a series of quinazolinone-based acetamide derivatives were synthesized and assessed for their anti-leishmanial efficacy. Amongst synthesized derivatives, compounds F12, F27 and F30 demonstrated remarkable activity towards intracellular L. donovani amastigotes in vitro, with IC
    Mesh-Begriff(e) Cricetinae ; Animals ; Mice ; Leishmaniasis, Visceral/drug therapy ; Leishmaniasis, Visceral/metabolism ; Leishmania donovani ; Quinazolinones/pharmacology ; Quinazolinones/therapeutic use ; Quinazolinones/metabolism ; Phosphatidylinositol 3-Kinases/metabolism ; Antiprotozoal Agents/pharmacology ; Antiprotozoal Agents/therapeutic use ; Acetamides/pharmacology ; Acetamides/therapeutic use ; Acetamides/metabolism ; Mice, Inbred BALB C
    Chemische Substanzen Quinazolinones ; Phosphatidylinositol 3-Kinases (EC 2.7.1.-) ; Antiprotozoal Agents ; Acetamides
    Sprache Englisch
    Erscheinungsdatum 2023-06-01
    Erscheinungsland France
    Dokumenttyp Journal Article
    ZDB-ID 188597-2
    ISSN 1768-3254 ; 0009-4374 ; 0223-5234
    ISSN (online) 1768-3254
    ISSN 0009-4374 ; 0223-5234
    DOI 10.1016/j.ejmech.2023.115524
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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