4x6o

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== Publication Abstract from PubMed ==
== Publication Abstract from PubMed ==
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The structure-activity relationships (SAR) of six-membered ring replacements for the imidazole ring scaffold is described. This work led to the discovery of the potent and selective pyridine (S)-23 and pyridinone (+/-)-24 factor XIa inhibitors. SAR and X-ray crystal structure data highlight the key differences between imidazole and six-membered ring analogs.
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Compound 2 was previously identified as a potent inhibitor of factor XIa lacking oral bioavailability. A structure-based approach was used to design analogs of 2 with novel P1 moieties with good selectivity profiles and oral bioavailability. Further optimization of the P1 group led to the identification of a 4-chlorophenyltetrazole P1 analog, which when combined with further modifications to the linker and P2' group provided compound 32 with FXIa Ki=6.7nM and modest oral exposure in dogs.
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Pyridine and pyridinone-based factor XIa inhibitors.,Corte JR, Fang T, Hangeland JJ, Friends TJ, Rendina AR, Luettgen JM, Bozarth JM, Barbera FA, Rossi KA, Wei A, Ramamurthy V, Morin PE, Seiffert DA, Wexler RR, Quan ML Bioorg Med Chem Lett. 2014 Dec 31. pii: S0960-894X(14)01358-4. doi:, 10.1016/j.bmcl.2014.12.050. PMID:25592713<ref>PMID:25592713</ref>
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Structure-based design of inhibitors of coagulation factor XIa with novel P1 moieties.,Pinto DJ, Smallheer JM, Corte JR, Austin EJ, Wang C, Fang T, Smith LM 2nd, Rossi KA, Rendina AR, Bozarth JM, Zhang G, Wei A, Ramamurthy V, Sheriff S, Myers JE Jr, Morin PE, Luettgen JM, Seiffert DA, Quan ML, Wexler RR Bioorg Med Chem Lett. 2015 Feb 4. pii: S0960-894X(15)00040-2. doi:, 10.1016/j.bmcl.2015.01.028. PMID:25728130<ref>PMID:25728130</ref>
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>

Revision as of 11:59, 18 March 2015

FACTOR XIA IN COMPLEX WITH THE INHIBITOR methyl (4-{4-chloro-2-[(1S)-1-({3-[5-chloro-2-(1H-tetrazol-1-yl)phenyl]propanoyl}amino)-2-phenylethyl]-1H-imidazol-5-yl}phenyl)carbamate

4x6o, resolution 2.10Å

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