- Oximino-piperidino-piperidine-based CCR5 antagonists. Part 2: Synthesis, SAR and biological evaluation of symmetrical heteroaryl carboxamides
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The synthesis, SAR and biological evaluation of symmetrical amide analogues of our clinical candidate SCH 351125 are described. A series of potent and orally bioavailable CCR5 antagonists containing symmetrical 2,6-dimethyl isonicotinamides and 2, 6-dimethyl pyrimidines amides were generated with enhanced affinity for the CCR5 receptor.
- Palani, Anandan,Shapiro, Sherry,Clader, John W.,Greenlee, William J.,Vice, Susan,McCombie, Stuart,Cox, Kathleen,Strizki, Julie,Baroudy, Bahige M.
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p. 709 - 712
(2007/10/03)
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- Synthesis of 4-alkyl-3,5-dibromo-, 3-bromo-4,5-dialkyl- and 3,4,5-trialkylpyridines via sequential metalation and metal-halogen exchange of 3,5-dibromopyridine
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Lithiation of 3,5-dibromopyridine with LDA and subsequent reaction with electrophiles provided 4-alkyl-3,5-dibromopyridines 2 in high yield. 3-Bromo-4,5-dialkylpyridines 3 were synthesized by metal-halogen exchange of 2 with one equivalent n-BuLi and reaction with a second electrophile. Further metal-halogen exchange of 3 and reaction with a third electrophile provided 3,4,5-trisubstituted pyridines 4.
- Gu,Bayburt
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p. 2565 - 2568
(2007/10/03)
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