249291-79-0Relevant academic research and scientific papers
Synthesis of conformationally constrained spirodihydrofuropyridine analogues of epibatidine
Abe, Hideki,Arai, Yumiko,Aoyagi, Sakae,Kibayashi, Chihiro
, p. 2971 - 2973 (2003)
Conformationally constrained spirofuropyridine analogues of epibatidine, syn-2 and anti-2, in which the 7-azabicyclo[2.2.1]heptane system and the 2-chloropyridine ring are held rigidly with the shorter and longer N-N distances, respectively, were synthesized from N-Boc-7-azabicyclo[2.2.1]heptan-2-one. The preliminary binding studies suggested that syn-2 has stronger binding affinity for nAChRs than anti-2.
Synthesis and Reactivity of Triazaphenanthrenes
Fernandez, Sarah,Ganiek, Maximilian A.,Karpacheva, Mariia,Hanusch, Fabian C.,Reuter, Stephan,Bein, Thomas,Auras, Florian,Knochel, Paul
, p. 3158 - 3161 (2016)
Pyridonaphthyridines (triazaphenanthrenes) were prepared in 4 steps and in 13-52% overall yield using Negishi cross-couplings between iodopicolines and 2-chloro-pyridylzinc derivatives. After chlorination, Gabriel amination and spontaneous ring-closure, the final aromatization leading to the triazaphenanthrenes was achieved with chloranil. This heterocyclic scaffold underwent a nucleophilic addition at position 6 leading to further functionalized pyridonaphthyridines. The influence of these chemical modifications on the optical properties was studied by steady-state and time-resolved optical spectroscopy. While the thiophene-substituted heterocycles exhibited the most extended absorption, the phenyl- and furan-substituted compounds showed a stronger photoluminescence, reaching above 20% quantum yield and lifetimes of several nanoseconds.
SPIROCYCLIC ISOXAZOLINES AS ANTIPARASITIC AGENTS
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Page/Page column 51; 52, (2014/03/26)
The invention recites spirocyclic isoxazoline derivatives of Formula (1) stereoisomers thereof, veterinary or pharmaceutical acceptable salts thereof, compositions thereof, processes for making, and their use as a parasiticide in an animal. The variables
