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Oct 2026
Stereoselective Synthesis of cis-1,3-Diaminocyclitols via a Tandem Iodocyclization/Ring-Opening Strategy.
Aminoglycoside antibiotics containing the 1,3-diaminocyclohexanetriol core, namely, 2-deoxystreptamine (2-DOS), represent a class of clinically widely used anti-infective agents with significant research importance. However, the current lack of synthetic strategies for constructing diverse aminocyclitol cores has restr...
Guang-Hai Cheng, Shuo Du, Cheng-Shan Yuan et al.
· Journal of Organic Chemistry · 0 citations
Open access
Sep 2026
Synthesis of 2-Substituted Thiazolines via Efficient Tandem C–X/C–S Bond Formation
Five-membered N,S-heterocyclic 2-thiazolines are important scaffolds in natural products, pharmaceuticals, food flavors, and chiral ligands. Due to their extensive applications, the synthesis of these valuable molecules has been widely investigated in recent years. Despite advances, efficient methods that avoid expensi...
Xue-Hui Zhang, Shuo Wang, Wen-Jie Liu et al.
· International Journal of Mol... · 0 citations
Open access
Sep 2026
SYNTHESIS OF 2,9-DI(HALOPHENYL)SUBSTITUTED POLYAZAPOLYCYCLES OF THE PERHYDROTETRACENE SERIES
Saturated N-containing polycycles occupy a special place among the wide variety of heterocyclic compounds, which is largely due to their prospects for practical application. Catalysis methods open up wide possibilities in the synthesis of functionally substituted azapolycycles. Catalytic heterocyclization reactions m...
V. Kirsanov, Yu. S. Blokhina, E. Rakhimova
· Izvestia Ufimskogo Nauchnogo... · 0 citations
Open access
Oct 2026
Simple Synthesis of Fused 1,3,4-Thiadiazines Through Successive SNAr Processes
A convenient method is described for the synthesis of novel 2-arylazo-1,3,4-thiadiazines fused with pyridine, pyrimidine or pyrazole ring. The synthetic strategy relies on a one-pot tandem cascade that proceeds through three consecutive steps without the isolation of intermediates: (1) nucleophilic aromatic substitutio...
Vladislav V. Nikol'skiy, A. Starosotnikov, A. K. Fedorenko et al.
· International Journal of Mol... · 0 citations
Open access
Oct 2026
Divergent Reactions of Coumarin- and 7-Azacoumarin-3-Carboxylic Acids with Azomethine Ylides: Spirocyclization and Ring Expansion
A series of new spiro-fused polycyclic systems has been synthesized via cascade reactions of 7-azacoumarin-3-carboxylic acid and coumarin-3-carboxylic acid derivatives with azomethine ylides generated in situ from L-proline or sarcosine and various carbonyl components (ninhydrin, aceanthrenequinone, isatin, and substit...
A. Trifonov, N. Appazov, L. Kibardina et al.
· International Journal of Mol... · 0 citations
Sep 2026
Diverse Bicyclic Heterocyclic Scaffolds via Palladium-Catalyzed C(sp3)–H Activation of Amides and Amines
A carboxamide- or amine-directed Pd(II)-catalyzed tandem intramolecular β-C(sp3)–H olefination/N-cyclization has been developed for the rapid construction of [3.2.1] N-heterobicyclic frameworks, which are ubiquitous in bioactive natural products and pharmaceuticals. The transformation accommodates a range of [3.2.1]...
R. Shukla, Alpa Sharma, Bedadyuti Vedvyas Pati et al.
· ACS Catalysis · 0 citations