191162-65-9Relevant academic research and scientific papers
Synthesis of 3-[(2S)-azetidin-2-ylmethoxy]-5-[11C]-methylpyridine, an analogue of A-85380, via a Stille coupling
Karimi, Farhad,Lngstrm, Bengt
, p. 423 - 434 (2007/10/03)
3-[(2S)-azetidin-2-ylmethoxy]-5-[11C]-methylpyridine (5d), which might be a novel ligand for nicotinic receptors, was synthesized via coupling [11C]iodomethane with tert-butyl (2S)-2-({[5-(trimethylstannyl)pyridin-3-yl]oxy}methyl) azetidine-1-carboxylate (4) at 80°C for 5 min with tri-o-tolylphosphine-bound, unsaturated palladium(O), followed by deprotection using trifluoroacetic acid (TFA). The previous problem (solid-phase extraction before injection on semi-preparative LC) with automation of Stille coupling reactions has been overcome. In a typical experiment, 0.46 GBq of 5d was obtained from 5.2GBq of [11C]iodomethane. The decay-corrected radiochemical yield was 39% (based on the quantity [11C]iodomethane trapped). The synthesis time was 43 min from end of radionuclide production. During a production condition using 36 μAh of proton beam irradiation, a specific radioactivity of 50 GBq/ μmol of the final product was obtained in biological buffer. Copyright
3-Pyridyl enantiomers and their use as analgesics
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, (2008/06/13)
The present invention relates to a method of controlling pain in mammals, including humans, comprising administering to a mammal or patient in need of treatment thereof selected compounds of formula I: STR1 or a pharmaceutically acceptable salt thereof. The invention further relates to selected (R) and (S) compounds of formula I above which are useful as analgesics as well as neuronal cell death preventors and anti-inflammatories.
