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  1. No Access

    Article

    Modified Neoflavones Based on 7-Hydroxyneoflavone-6-Enamino Ketone and 7-Hydroxy-3-Hetarylbenzopyran-2- and 4-Ones Mannich Bases and Their Recyclization

    The interaction of 7-hydroxyneoflavone-6-enamino ketone with 8-dialkylamino-7-hydroxy-3-hetarylbenzopyran-2- and 4-ones led to the formation of 10-methyl-4-phenyl-2H,6H-pyrano[3,2-g]-chromen-2,6-dione, which inco...

    E. K. Hlibov, N. V. Gorbulenko, V. S. Moskvina… in Chemistry of Natural Compounds (2024)

  2. No Access

    Article

    Flavonoids from Erigeron annuus

    S. V. Kovalev, A. R. Golovach, V. N. Kovalev… in Chemistry of Natural Compounds (2023)

  3. No Access

    Article

    Synthesis and Recyclization of Methylenebisflavonoids Based on Heterocyclic Analogs of Umbelliferone and Formononetin

    The methylenebisflavonoids 7-hydroxy-3-hetaryl-8-(4-oxo-4H-3-chromenylmethyl)-4H-4-chromenones and 7-hydroxy-3-hetaryl-8-(4-oxo-4H-3-chromenylmethyl)-2H-2-chromenones were synthesized via the reaction of 7-hydrox...

    E. K. Glibov, N. V. Gorbulenko, V. S. Moskvina… in Chemistry of Natural Compounds (2022)

  4. No Access

    Article

    Progress in the Chemistry of Amino-Acid Derivatives of Isocoumarins and 3,4-Dihydroisocoumarins

    Approaches to the synthesis of isocoumarins and 3,4-dihydroisocoumarins containing natural or synthetic amino-acid fragments are reviewed. Most attention is paid to the two most numerous groups of natural 3,4-...

    O. V. Shablykina, S. V. Shilin, V. S. Moskvina… in Chemistry of Natural Compounds (2021)

  5. No Access

    Article

    Synthesis of Furoneoflavones Modified by Coumarin and (HET)Aroyl Substituents

    Furo[3,2-g]neoflavones and furo[2,3-h]neoflavones modified by coumarin and (het)aroyl substituents were synthesized via reactions of 7-hydroxy-6(8)-acetyl(formyl)neoflavones with substituted phenacyl bromides,...

    T. V. Shokol, V. S. Moskvina, Ye. K. Hlibov… in Chemistry of Natural Compounds (2021)

  6. No Access

    Article

    Synthesis of Benzofurans Modified by Coumarin and Pyrazole Heterocycles

    Reactions of 7-hydroxy-2-methyl-8-formylisoflavone with 4-chloromethylcoumarins synthesized 8-(coumarin-4-yl)furo[2,3-h]chromones, which reacted with 2-bromoacetylbenzofuran to produce 8-(benzofuroyl)furo [2,3-h]...

    T. V. Shokol, N. V. Gorbulenko, M. S. Frasinyuk… in Chemistry of Natural Compounds (2020)

  7. No Access

    Article

    Amino-Acid Derivatives of Pyranocoumarins

    A methodology for synthesizing amino-acid derivatives of pyranocoumarins in three steps using pyranocoumarin oximes as starting compounds was developed. A series of pyranocoumarins containing the amino acids g...

    I. V. Krasylov, V. S. Moskvina, S. V. Shilin… in Chemistry of Natural Compounds (2020)

  8. No Access

    Article

    Synthesis of 7-Hydroxy-8-Methyl-4'-Methoxy-6-Formylisoflavone and Linear Hetarenochromones Based on It

    7-Hydroxy-8-methyl-4'-methoxy-6-formylisoflavone was synthesized from the 6-aminomethyl derivative of 7-hydroxychromone under modified Duff reaction conditions and underwent heterocyclization to form linear furo-...

    T. V. Shokol, N. V. Gorbulenko, M. S. Frasinyuk… in Chemistry of Natural Compounds (2020)

  9. No Access

    Article

    Neoflavonoid Angelicin Derivatives

    T. V. Shokol, V. S. Moskvina, E. K. Glebov, V. P. Khilya in Chemistry of Natural Compounds (2019)

  10. No Access

    Article

    Conjugation of the Alkaloid Anabasine to Coumarins

    The possibility of using the alkaloid anabasine in Mannich aminomethylation of coumarins was studied. Anabasine-coumarin conjugates in which the benzopyrone core was conjugated to anabasine through a methylene...

    S. P. Bondarenko, G. P. Mrug, V. I. Vinogradova… in Chemistry of Natural Compounds (2019)

  11. No Access

    Article

    Recent Progress in the Synthesis of 4-Arylcoumarins

    Current approaches to the synthesis of 4-arylcoumarins (neoflavones) are reviewed. This is an important group of O-containing natural flavonoids that are widely used not only to prepare natural and synthetic n...

    V. S. Moskvina, V. P. Khilya in Chemistry of Natural Compounds (2019)

  12. No Access

    Article

    Synthesis of Isoflavone-Anabasine Conjugates

    Possible Mannich aminomethylation of isoflavone chromone rings was studied using the alkaloid anabasine. Anabasine-isoflavone conjugates in which the benzopyrone core was connected to anabasine through a methy...

    S. P. Bondarenko, M. S. Frasinyuk, G. P. Mrug… in Chemistry of Natural Compounds (2018)

  13. No Access

    Article

    Furo[2,3-h]Chromones and Pyrano[2′,3′:5,6]Chromeno [4,3-B]Pyridines Based on Natural Isoflavones

    Furo[2,3-h]chromone and pyrano[2′,3′:5,6]chromeno[4,3-b]pyridine derivatives were synthesized from 7-hydroxy-8-formylisoflavones, which were prepared from natural isoflavones using a Duff reaction, via reactio...

    T. V. Shokol, N. V. Gorbulenko, M. S. Frasinyuk… in Chemistry of Natural Compounds (2018)

  14. No Access

    Article

    Synthesis and Modification of 6-thiazolyl-4-methylumbelliferone

    6-(2-Methylthiazol-4-yl)-4-methylumbelliferone derivatives were synthesized from 4-(1,3-thiazol-4-yl)-1,3-benzenediols via a Pechmann reaction and were modified by acylation and aminomethylation.

    T. V. Shokol, E. N. Abdullaev, N. V. Gorbulenko… in Chemistry of Natural Compounds (2018)

  15. No Access

    Article

    Synthesis of 6-Isoxazolyl Derivatives of 4-Methylumbelliferone

    A two-step synthesis of 6-(5-isoxazolyl)coumarins was developed. Recyclization of 7-hydroxychromones by hydroxylamine into 4-(5-isoxazolyl)-1,3-benzenediols followed by condensation with acetoacetic ester prod...

    T. V. Shokol, N. V. Gorbulenko, M. S. Frasinyuk… in Chemistry of Natural Compounds (2017)

  16. No Access

    Article

    3-Aryl-3,4-Dihydroisocoumarins with Amino-Acid Fragments

    New amino-acid derivatives of 3-aryl-3,4-dihydroisocoumarins were prepared via acylation of the amine of natural amino acids by phenoxyacetic acids containing 3,4-dihydroisocoumarin substituents on the benzene...

    S. V. Shilin, O. V. Shablykina, V. V. Ishchenko… in Chemistry of Natural Compounds (2016)

  17. No Access

    Article

    New Aloperine–Isoflavone Conjugates

    The reaction of aloperine with isoflavone glycidyl ethers was investigated. A series of alkaloid–isoflavonoid conjugates were synthesized via regioselective opening of the oxirane ring by aloperine.

    S. P. Bondarenko, M. S. Frasinyuk, V. P. Khilya in Chemistry of Natural Compounds (2016)

  18. No Access

    Article

    Synthesis Of 4-Aryl-5-[2-Hydroxy-4-(2-Cytisin-12-Ylethoxy)Phenyl]Isoxazoles

    Recyclization of N 12-cytisinylethoxy derivatives of natural isoflavonoids and their analogs through the action of hydroxylamine was studied. Substituted 4-aryl-5-(2-hydroxyphenyl)isoxazol...

    S. P. Bondarenko, M. S. Frasinyuk, V. I. Vinogradova… in Chemistry of Natural Compounds (2016)

  19. No Access

    Article

    Synthesis of Aloperine-Containing Mannich Bases of Isoflavones

    The possibility of using the alkaloid aloperine for aminomethylation of a chromone ring was studied. A series of 8-(aloperin-12-yl)methyl-substituted isoflavone derivatives were synthesized.

    S. P. Bondarenko, M. S. Frasinyuk, V. P. Khilya in Chemistry of Natural Compounds (2015)

  20. No Access

    Article

    Synthesis of 6-(3-Pyrazolyl)-4-Methylumbelliferone Derivatives Substituted on the Pyrazole Ring

    A two-step synthesis of 6-(3-pyrazolyl)coumarins starting from 7-hydroxy(acetoxy)chromones was developed. It included their recyclization using hydrazine hydrate into 4-(3-pyrazolyl)-1,3-benzened...

    T. V. Shokol, N. V. Gorbulenko, M. S. Frasinyuk… in Chemistry of Natural Compounds (2015)

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