OOIR: Observatory of International Research

Papers

(The median citation count of Heterocycles is 0. The table below lists those papers that are above that threshold based on CrossRef citation counts [max. 250 papers]. The publications cover those that have been published in the past four years, i.e., from 2022-05-01 to 2026-05-01.)

Article	Citations
Contents	10
Contents	6
Direct Arylation of Benzothiophene and Benzofuran Catalyzed by a Dinuclear Palladium Complex	5
N-Alkylation of Azoles with Enones Assisted by P(III) or Fe2O3-Nanoparticles as Recyclable Catalyst	5
A Series of Novel Coumarin Derivatives: Design, Synthesis and Evaluation of Anti-Tumor Activity	5
3-[2-Oxo-2H-chromen-3(6)(8)-yl]-1-aryl/heteroaryl-1H-pyrazole-4-carbaldehydes: Synthesis, Reactions and Applications	5
Strategy for the Synthesis of C-Aryl Glucosides as Sodium Glucose Cotransporter 2 Inhibitors	4
Syntheses of Two New Fluorous Crown Ethers Carrying Sugar Molecules with a Multivalent Bfp Modification: Investigations of Their Partition Ratios in Fluorous Biphasic Systems and Recyclability During	4
Synthesis and Antitumor Activity of Heterocylic Aurone and Its Analogue Indanone Derivatives	4
A Convenient Synthesis of 1,2,4-Triazino[2,3-b]indazol-3-amine Derivatives via Tandem Abnormal Staudinger/Aza-Wittig/Isomerization Reaction	3
Concise Synthesis of (±)-Cephalotaxine	3
Synthesis and Fungicidal Activities of 5-Aryl-1,3,4-oxadiazolyl 2-Thioether Derivatives Containing Strobilurin Motif	3
Contents	3
Design, Synthesis and Biological Evaluation of Pyrimidinamine Derivatives Containing Urea Moiety	3
Triazene-Bridged Nitrogen-Rich Heterocyclic Energetic Compounds 4,4'-(Triaz-1-ene-1,3-diyl)bis(1,2,5-oxadiazol-3-amine) - Synthesis, Characterization and Properties	3
A Review on the Biological Activity of β-Carboline Derivatives	3
Design, Synthesis and Evaluation of Catechol-Based Amyloid Beta Aggregation Inhibitors	2
Heterocycles Award	2
Synthesis of Hepta-arbutin-branched β-Cyclodextrins at Their Primary Sides via Click Reaction	2
A Review on Indole[2,3-a]quinolizidine: The Synthetic Approaches to the Development of Bioactive Indolo[2,3-a]quinolizidine Scaffolds	2
Synthesis, Characterization, Molecular Docking Studies and Antimicrobial Activity of Azomethine Derivatives of 1,3-Substituted Pyrazoles	2
Selective Synthesis of 2,2-Diamino-4,4,6,6-tetrakis(aryloxy)cyclotriphosphazenes N3P3-2,2-(NH2)2-4,4,6,6-(ArO)4	2
Synthesis of 2-Anilino-2,4,4,6,6-pentachlorocyclotriphosphazenes (N3P3Cl5(NAr(R)))	2
Acid, Metal and Peroxide-Free Synthesis of 2,4,5-Trisubstituted Imidazoles Commencing from Internal Alkenes Using an Iodine/DMSO System	2
Large-Scale Synthesis of the Key Intermediates of Tetrahydropyran Derivatives under Flow Conditions	2

Transnitrosation of Alicyclic N-Nitrosamines Containing Sulfur Atoms in Five- or Six-Membered Rings	1
Heterocycles Award	1
A Convenient One-Pot Synthesis of Novel 1,4-Dihydro-1,2-Benzoxaphosphinino[4,3-C]Pyrazoles	1
Contents	1
L-Malic Acid as Chiral Auxiliary and Building Block in the Asymmetric Synthesis of (S)-(−)-Crispine A	1
Diastereoselective Synthesis of 2,8-Dioxabicyclo[3.3.1]Nonane Derivatives via I2-Mediated Cascade Reactions	1
Contents	1
New C19-Diterpeniod Alkaloids from Aconitum novoluridum	1
(7S)-Macaureas A and B, Two Urea Analogues from the Roots of Lepidium meyenii	1
Mini Review on Pyrido[2,3-c]coumarins Backbone of Santiagonamine Antibiotics	1
Contents	1
New Reactions of Indoline-2-thiones and Aryl Aldehydes: Microwave-Induced One Step Synthesis of Structurally Diverse Thiopyrano-Diindoles	1
Contents	1
Diterpenoid Alkaloids from Aconitum elliotii Lauener	1
Efficient One-Pot, Three-Step Synthesis of 1,2,3,5-Tetrasubstituted Pyrroles via Aza-Michael Addition of Methyl 3-Iminoacrylates	1
Heterocycles Award	1
Diterpenoid Alkaloids from Delphinium pachycentrum Hemsl.	1
Design, Synthesis, and Biological Evaluation of 4H-Pyrido[1,2-a]pyrimidin-4-one Derivatives as Anticancer Agents via ROR1 Inhibition	1
An Efficient Route for the Synthesis of 2-Arylbenzothiazoles in an Ionic Liquid, Using Ultrasound Irradiation	1
Stereospecific Skeletal Rearrangement of Epoxides Derived from Methylenecyclobutane-Fused N-Heterocycles	1
Synthesis, Antioxidant Activity and Molecular Docking of Some New Thiazolyl-Pyrazolinyl-Pyran-2-One Derivatives	1
Diversity-Oriented, One Step Synthesis of Chromeno[2,3-b]Indoles and Thiochromeno[2,3-b]Indoles under Microwave-Assisted Conditions	1
Fischer Glycosidation Using Organotitanium Catalyst ORGATIX	1
Functionalization of Phenothiazine Derivatives by Ammonium Bridge	1
Diterpene Glycosides Derived from Aster spathulifolius Have Immunomodulatory Effects	1
Concise Formal Synthesis on Solandelactone E Based on a Regioselective Cyclopropanation	0
Recent Trends in the Synthesis of Enaminones	0
Effects of Degree of Polymerization of B-Type Procyanidins on Amyloid Aggregation	0
Cysteine Catalyzed Water Mediated Eco-Friendly Approach for the Synthesis of 5-Substituted 1H-Tetrazole and Its Derivatives	0
Asymmetric Synthesis of the Unnatural Enantiomer of Codonopsinine and a Stereoisomer via Alkoxyallenes	0
Simultaneous Denitrative C–C Bond Formation and Construction of Pyrazole Ring Leading to 1,1'-Diphenyl-4,4'-bipyrazole	0
Biotransformation of Plant Secondary Metabolites by Silkworms	0
Chemical Structures and Cytotoxic Activities of the Constituents Isolated from Citrus sphaerocarpa	0
Briastecholide N: a New Chlorine-Containing Briarane Diterpenoid Deriving from Cultured Briareum stechei	0
12-epi-Briacavatolide B, a New Briarane Diterpenoid from the Octocoral Briareum stechei	0
Encapsulation of Cofacial Diarylacetylene Dimers Using [C2]Daisy Chain Rotaxane Strategy	0
Synthesis of C4' Uridyl Aryloxazoles: A 'Heterohomologative' Approach	0
Contents	0
Sialidase Inhibitory Activity of Synthesized Biflavonoid Glycoconjugates	0
Design, Synthesis, and Biological Evaluation of Novel 6,8-Disubstituted Imidazo[1,2-a]pyridine Derivatives as a CDK2 Inhibitors	0
Recent Advances in the Synthesis of 1,2,4-Triazolo[3,4-b][1,3,4]thiadiazole Compounds: A Mini-Review	0
Catalytic Enantioselective Construction of trans-Fused 2,3,3a,4,5,9b-Hexahydro-1H-pyrrolo[3,2-c]quinoline Derivatives by Intramolecular [3+2]-Cycloaddition	0
Simple Brønsted Acid Catalyzed Three-Component Reactions for Efficient Alkylation of Indolizines with Aromatic Aldehydes and Hantzsch Esters	0
Utility of 6-Aminouracils for Building Substituted and Heteroannulated Pyrimidines: A Comprehensive Review	0
Synthesis, Chracterization and Insecticidal Evaluation of Some p-tert-Butylthiacalix[4]arene Derivatives against Cowpea Aphid (Aphis craccivora Koch)	0
Mapping the Antimicrobial Activity of Indoloquinoline and Neocryptolepine Analogues	0
Chemical Structures and Cell Death Inducing Activities of the Metabolites of Aspergillus terreus	0
Synthesis of Maleimide-Fused Aceheptylenes from Guaiazulene	0
Advances on Catalytic Approaches towards the Synthesis of Quinoline Derivatives Using Povarov Reaction	0
Construction of Supramolecular Frameworks Comprised of Fully-Substituted Cyclopentanocucurbit[6]uril and Two Phenolic Acids	0

Highly Diastereoselective Self-1,3-Dipolar [3+3] Cycloaddition of Azomethine Ylides Promoted by Cesium Catalyst	0
Sulfate Radical Anion (SO4˙ˉ) Mediated Degradation of Some Over-the-Counter Non-Steroidal Anti-Inflammatory Drugs (NSAIDs) at Neutral pH in Aqueous Environment	0
Synthesis of Elastin Crosslinker Desmosines	0
Organic Base-Catalyzed Cascade Reaction of Electron-Deficient Cyclopentadienone with Prop-2-yn-1-ols: Formation of 3-Methylenetetrahydrofuran Ring Condensed with Cyclopentenone	0
Synthesis of 1,2-Dicarbonyls from Five-Membered Cyclic Enamines and Arylglyoxal Hydrates under Metal-Free Conditions	0
A New Compound Embeloside A with Hypoglycemic Potential from the Fruits of Embelia oblongifolia Hemsl.	0
Effect of Sulfur-Containing Side Chains on Transnitrosation of N-Nitroso Compounds of Thiazolidines	0
Thiofunctionalized γ-Lactams	0
Evaluation of 1,3-Thiazole Derivatives with Pharmaceutical and Chemical Activity: a Review	0
Synthesis and Biological Evaluation of 5-Methylpyrimidine Derivatives as Dual Inhibitors of EGFR and Src for Cancer Treatment	0
Synthesis of New Glycoluril Derivatives via Ring-Closing Metathesis	0
Evaluation of 4,4'-Diaminodiphenylmethane as a Platform for Proton, pH, and Metal Ion Responsive Fluorescent Probe	0
A Facile Synthesis and Anticancer Activity of (E)-Diethyl 2-Styrylquinoline-3,4-dicarboxylates	0
Contents	0
Synthetic Studies toward 11-O-Debenzoyltashironin	0
Design, Synthesis, and Molecular Docking Studies of Chroman-4-one Linked Thiosemicarbazide Derivatives as Inhibitors of KatG and Anti-Mycobacterium tuberculosis Agents	0
Silver(I) Complexes Bearing Amine-Functionalized N-Heterocyclic Carbenes: Synthesis, Antimicrobial and Theoretical Studies	0
On the Reactivity of 2-Methylene-3-quinuclidinone in Water	0
Asymmetric Inverse-Electron-Demand 1,3-Dipolar Cycloadditions Using Organocatalysts	0
Hydroxychloroquine: Chemistry and Medicinal Applications	0
Contents	0
Synthesis of 2-Aryloxy-2,4,4,6,6-pentachlorocyclotriphosphazenes (N3P3Cl5(OAr)): Monoaryloxylatioin of Hexachlorocyclotriphosphazene (N3P3Cl6) and Mass Spectra of Chlorocyclotriphosphazene Derivatives	0
Contents	0
Efficient Synthesis of Quinazoline-2,4(1H,3H)-Diones from 2-Aminobenzonitriles and Co2 Catalyzed by 2-Hydroxypyridine Anion-Based Ionic Liquid at Atmospheric Pressure	0
Contents	0
The Azalogues of Pyrrolotetrazole – An Overview	0
A Convenient Synthesis of 5-Trifluoromethyl-5-cyclopropyl-Substituted Pyrazolines	0
Synthesis of Protected L,L-Cyclotryptophyltyrosine, a Key Unit of Tryptorubin A	0
Synthesis and Characterization of Some Novel Heteroannulated Chromeno[4,3-b]quinolines	0
Synthesis and Photophysical Properties of Diethynylated Bibenzofuran and Benzodifuran Derivatives	0
Synthesis of Arylideneisoxazol-5-ones Catalyzed by Sodium Cyclamate	0
Contents	0
Selective Protection and De-protection of Phenolic Hydroxy Groups of Naringenin	0
Synthesis of Thiosemicarbazone Derivatives of 3-Formyl-N-pyrazolylmethyleneindoles and Their Antifungal Activities	0
Facile Preparation of the Nootropic Agent IDRA-21 and Related Heterocycles via a One-Pot Iron-Mediated Redox Annulation	0
Contents	0
Syntheses and Catalytic Properties of 1-Naphthoate-Copper-Bipy Complex	0
One-Pot Synthesis of Carbazoles by a Domino Reaction Using Microwave Heating and Antiproliferative Activities of Constituents from Murraya Plants Against Cancer Stem Cells	0
Synthesis and Biological Assessment of Novel Heterocyclic Nucleoside Analogues Using Microwave-Assisted Hantzsch Reaction	0
Design, Synthesis, and Biological Evaluation of New Di-arylimidazole-Quinazolinone Hybrid	0
Application of Highly Active TEMPO Derivatives for Electrochemical Analysis	0
Stereocontrolled Synthesis of Nitrogen-Substituted Quaternary Stereogenic Centers: Lessons from a Synthetic Route to the Core Structure of Sphingofungin E	0
Contents	0
1,3,5-Triazine-Cored Star-Shaped (D-π)3-A Molecules Based on 2,4,6-Tris(5-arylthiophen-2-yl)-1,3,5-triazine	0
Synthesis and Properties of Novel Thiophene Polycyclic Aromatic Hydrocarbons Based on Pyrene and Their Radical Cations	0
Synthesis, Characterization, and Computational Studies of Some Perfluorinated Cyclopentapyridazines for Biological Applications	0
An Efficient Ton Scale Process of Chlorfluazuron	0
Theoretical Investigation of Cp*CO(III)-Mediated Regioselective [4 + 2]-Annulation of N-Chlorobenzamide with Vinyl Acetate for the Synthesis of Isoquinolone	0
Synthesis and Biological Activity of Aminoisoquinoline Schiff Bases	0
Chiral Benzimidazolium N-Heterocyclic Carbene Ligands with Hydroxyamide- or Hydroxyalkyl-Functionalized Wingtip for Cu-Catalyzed Asymmetric Allylic Alkylation	0
Supramolecular Self-Assembly Based on Symmetric Tetramethyl-Substituted Cucurbit[6]uril and Small Aromatic Amines	0
Comprehensive Synthesis of 20 Fentanyl Derivatives for Their Rapid Differentiation by GC-MS Analysis	0
Synthesis and Radical Scavenging Activities of Tocopherol Analogs Containing Heterocyclic Rings	0
Aqueous Synthesis of (R,R)-Bis(spiropyrazolone)cyclopropanes through Iodine-Promoted Cyclization of Aldehydes and Pyrazolin-5-ones	0
Catalyst-Free Green Synthesis of Phthalazinones at Room Temperature	0