Results 71 to 80 of about 5,225 (230)

Bis‐Furans: A Sustainable Source of Diverse Molecular Architectures

European Journal of Organic Chemistry, Volume 29, Issue 10, 9 March 2026.
A concise synthetic route to diverse acyclic and heterocyclic compounds has been developed by combining hetero‐Diels–Alder reactions, DBU‐promoted ring openings, and Lewis base‐catalyzed annulations. Nitrosoalkenes reacted with furan derivatives to form 4a,7a‐dihydro‐4H‐furo[2,3‐e][1,2]oxazines, which underwent DBU‐promoted rearrangements to 6H‐1,2 ...
Ana L. Cardoso, José A. Paixão, Teresa M. V. D. Pinho e Melo   +2 more
wiley   +1 more source

Michael Addition-Initiated Sequential Reactions from 1,3-Dicarbonyls for the Synthesis of Polycyclic Heterocycles

, 2013
International audienceThis review aims to highlight the most significant recent developments on synthetic strategies involving consecutive, domino and multicomponent reactions featuring a Michael addition-initiating step for the synthesis of polycyclic ...
Bonne, Damien, Bugaut, Xavier, Constantieux, Thierry, Coquerel, Yoann, Rodriguez, Jean   +4 more
core   +3 more sources

A synthetic benzoxazine dimer derivative targets c‐Myc to inhibit colorectal cancer progression

Molecular Oncology, Volume 20, Issue 3, Page 688-708, March 2026.
Benzoxazine dimer derivatives bind to the bHLH‐LZ region of c‐Myc, disrupting c‐Myc/MAX complexes, which are evaluated from SAR analysis. This increases ubiquitination and reduces cellular c‐Myc. Impairing DNA repair mechanisms is shown through proteomic analysis.
Nicharat Sriratanasak, Bodee Nutho, Worawat Wattanathana, Narumon Phaonakrop, Bunnatut Panasawatwong, Katharina Erlenbach‐Wuensch, Sittiruk Roytrakul, Regine Schneider‐Stock, Pithi Chanvorachote   +8 more
wiley   +1 more source

Tetranuclear Zn2Ln2 coordination clusters as catalysts in Petasis borono-Mannich multicomponent reaction [PDF]

, 2016
We report herein for the first time the efficiency of heteronuclear Zn/Ln coordination clusters (CCs) as catalysts for the multicomponent Mannich-type condensation that involves amines, aldehydes and boronic acids, known as Petasis borono-Mannich (RBR ...
Griffiths, Kieran, Kostakis, George E, Kumar, Prashant, Lymperopoulou, Smaragda   +3 more
core   +1 more source

Exploring Novel Nitrofuryl‐1,3,4‐Thiadiazole‐Based Derivatives: Design, Synthesis, and Evaluation of In Vitro Leishmanicidal and Trypanocidal Activity

Archiv der Pharmazie, Volume 359, Issue 3, March 2026.
In a series of substituted 1‐[5‐(5‐nitrofuran‐2‐yl)‐1,3,4‐thiadiazol‐2‐yl]piperidine‐4‐carboxamides evaluated for in vitro antileishmanial and antitrypanosomal activity, compound 18 emerged as the most promising derivative, showing submicromolar anti‐parasitic effects targeting diverse Leishmania and Trypanosoma species and acceptable selectivity ...
Alireza Mousavi, Martina Slapničková, Maryam Norouzbahari, Sarah D'Alessandro, Parham Foroumadi, Fariba Peytam, Federica Perego, Eva Doleželová, Zahra Emamgholipour, Maliheh Barazandeh Tehrani, Seyed Esmaeil Sadat‐Ebrahimi, Elahe Hosseinzadeh, Elmira Meghrazi Ahadi, Loghman Firoozpour, Hamidreza Bijanzadeh, Nicoletta Basilico, Alena Zíková, Alireza Foroumadi   +17 more
wiley   +1 more source

Synthesis of Substituted Pyrido-oxazine through Tandem SN2 and SNAr Reaction

SynOpen, 2018
Pyrido-oxazine derivatives have been synthesized by employing tandem SN2 and SNAr reaction between 2,4,6-tribromo-3-(2-bromoethoxy)pyridine or 2,4,6-tribromo-3-(3-bromopropoxy)pyridine and a variety of primary amines. Moderate to good regioselectivity in
Mosim Amin Pathan, Faiz Ahmed Khan
doaj   +1 more source

Diversity oriented synthesis : substitution at C5 in unreactive pyrimidines by Claisen rearrangement and reactivity in nucleophilic substitution at C2 and C4 in pteridines and pyrido[2,3-d]pyrimidines [PDF]

, 2011
Diversity oriented synthesis of fused pyrimidines leads to scaffolds with many biological activities. In the case of the preparation of pyrido[2,3-d]pyrimidines from 2-alkylthiopyrimidines, the formation of a new carbon-carbon bond at C5 is required, a ...
Adcock, Jonathan Paul, Gibson, Colin, Huggan, Judith, Suckling, Colin   +3 more
core   +1 more source

Cationic Poly(2‐oxazoline)s

Macromolecular Chemistry and Physics, Volume 227, Issue 5, 13 March 2026.
Cationic poly(2‐oxazoline)s (POx) have emerged as versatile materials for different biomedical applications. The combination of the pseudo‐peptidic polymer backbone and the amine‐derived cationic motifs results in well‐tolerated polymers with potential benefits for drug and gene delivery as well as antimicrobial development.
Meike N. Leiske
wiley   +1 more source

Addition and cycloaddition reactions of Phosphinyl- and Phosphonyl-2H-Azirines, Nitrosoalkenes and Azoalkenes [PDF]

, 2012
An overview of the use of 2H-azirines, conjugated nitrosoalkenes and conjugated azoalkenes bearing phosphorus substituents in addition and cycloaddition reactions is presented, focused on strategies for the synthesis of aminophosphonate and ...
Lemos, A.
core  

Effect of α‐Hydrazino Acids on the Performance of H‐Pro–Pro‐Xaa Catalysts in the Conjugate Addition of Aldehydes to Nitroolefins

ChemistrySelect, Volume 11, Issue 11, 18 March 2026.
The tripeptide Pro‐Pro‐D‐hVal‐OMe, which lacks an acidic group, catalysed the conjugate addition of aldehydes to nitroolefins and afforded γ‐nitroaldehydes in 79–97% yield and 88:14–93:7 e.r. The proposed reaction mechanism relies on the active role of hydrazide NHβ or NHα protons in hydrogen bonding with the reacting species.
Ivona Banović, Ivana Nikšić‐Franjić, Ivanka Jerić   +2 more
wiley   +1 more source