An Improved Large-Scale Preparation of Benzimidazole-2-Sulfonic Acids and 2-Chlorobenzimidazoles.‡
摘要:
An improved method for the preparation of benzimidazole-2-sulfonic acids from 2-mercaptobenzimidazoles has been developed which utilizes aqueous sodium percarbonate. 2-Chlorobenzimidazoles were obtained in high yield from the corresponding sulfonic acids upon reaction with PCl5 in POCl3 on a gram-mole scale.
In silico Optimization of a Fragment-Based Hit Yields Biologically Active, High-Efficiency Inhibitors for Glutamate Racemase
作者:Katie L. Whalen、Anthony C. Chau、M. Ashley Spies
DOI:10.1002/cmdc.201300271
日期:2013.8.8
A novel lead compound for inhibition of the antibacterial drug target, glutamateracemase (GR), was optimized for both ligand efficiency and lipophilic efficiency. A previously developed hybrid molecular dynamics–docking and scoring scheme, FERM‐SMD, was used to predict relative potencies of potential derivatives prior to chemical synthesis. This scheme was successful in distinguishing between high‐
A series of different substituted benzimidazole derivatives has been synthesized and evaluated for the ability to displace [3H]MDL-105,519 to rat cortical membranes. Two benzimidazole-2-carboxylic acids 9 b and 9 c, in this substitution pattern not yet described as glycine antagonists, showed IC50 values of 0.89 microM (9 b) and 38.0 microM (9 c). Replacement of the carboxylate function in 2-position by a sulfonic acid moiety appreciably increased solubility, but decreased the affinity giving evidence for the strong need of the carboxylate group within the ligand. Further structure-activity studies using benzimidazole-2-one derivatives with an acetic acid moiety adjacent to a ring nitrogen revealed new insights into the importance of amide functionalities within the heterocycle for the affinity of antagonist glycine-site ligands.
Sorba; Garrone; Serafino, European Journal of Medicinal Chemistry, 1986, vol. 21, # 5, p. 391 - 395
作者:Sorba、Garrone、Serafino、et al.
DOI:——
日期:——
Synthesis of 2-hydrazinobenzimidazoles and their antiinfluenza activity
作者:G. A. Mokrushina、S. K. Kotovskaya、G. N. Tyurenkova、V. I. Il'enko、V. G. Platonov、I. V. Kiseleva
DOI:10.1007/bf00758445
日期:1988.2
SORBA G.; GARRONE A.; SERAFINO A.; GASCO A.; ORSETTI M., EUR. J. MED. CHEM., 21,(1986) N 5, 391-395
作者:SORBA G.、 GARRONE A.、 SERAFINO A.、 GASCO A.、 ORSETTI M.