449774-77-0Relevant academic research and scientific papers
Structure-activity relationship (SAR) optimization of 6-(Indol-2-yl) pyridine-3-sulfonamides: Identification of potent, selective, and orally bioavailable small molecules targeting hepatitis C (HCV) NS4B
Zhang, Nanjing,Zhang, Xiaoyan,Zhu, Jin,Turpoff, Anthony,Chen, Guangming,Morrill, Christie,Huang, Song,Lennox, William,Kakarla, Ramesh,Liu, Ronggang,Li, Chunshi,Ren, Hongyu,Almstead, Neil,Venkatraman, Srikanth,Njoroge, F. George,Gu, Zhengxian,Clausen, Valerie,Graci, Jason,Jung, Stephen P.,Zheng, Yingcong,Colacino, Joseph M.,Lahser, Fred,Sheedy, Josephine,Mollin, Anna,Weetall, Marla,Nomeir, Amin,Karp, Gary M.
supporting information, p. 2121 - 2135 (2014/04/03)
A novel, potent, and orally bioavailable inhibitor of hepatitis C RNA replication targeting NS4B, compound 4t (PTC725), has been identified through chemical optimization of the 6-(indol-2-yl)pyridine-3-sulfonamide 2 to improve DMPK and safety properties.
Octahydropyrrolo[3,4-C]pyrrole derivatives
-
Page/Page column 13, (2010/11/08)
The present invention relates to octahydropyrrolo[3,4-c]pyrrole derivatives of formula (I): and to processes for the preparation thereof, compositions containing the same and the uses thereof.
A highly effective nonpolar isostere of deoxyguanosine: synthesis, structure, stacking, and base pairing.
O'Neill, Bryan M,Ratto, Jessica E,Good, Kristi L,Tahmassebi, Deborah C,Helquist, Sandra A,Morales, Juan C,Kool, Eric T
, p. 5869 - 5875 (2007/10/03)
We describe the preparation and structure of the deoxyribonucleoside of 4-fluoro-6-methylbenzimidazole, abbreviated dH (8), which acts as a close shape mimic of the nucleoside deoxyguanosine. The nucleoside is prepared from 2-fluoro-4-methylaniline in seven steps. The X-ray crystal structure reveals a (-sc) glycosidic orientation, an S conformation for the deoxyribose moiety, and quite close shape mimicry of guanine by the substituted benzimidazole. Conformational studies by (1)H NMR and (1)H-(1)H ROESY experiments reveal an S-type conformation and an anti glycosidic orientation in solution (D(2)O), essentially the same as that of deoxyguanosine. Base-stacking studies in a "dangling end" context reveal that the benzimidazole base mimic stacks more strongly than all four natural bases, and more strongly than its counterpart guanine by 1.1 kcal/mol. Base-pairing studies in a 12mer DNA duplex show that, like other nonpolar nucleoside isosteres, H is destabilizing and nonselective when paired opposite natural bases. However, when paired opposite another nonpolar isostere, difluorotoluene (F), a mimic of thymine, the pair exhibits stability approaching that of its natural analogue, a G-T (wobble) base pair. The nucleoside analogue dH will be useful in studies of protein-DNA interactions, and the H-F base pair will serve as a structurally and thermodynamically close mimic of G-T in studies of DNA mismatch repair enzymes.
