[EN] ANTI-INFLAMMATORY QUINIC ACID DERIVATIVES FOR ORAL ADMINISTRATION [FR] DÉRIVÉS ANTI-INFLAMMATOIRES DE L'ACIDE QUINIQUE POUR UNE ADMINISTRATION PAR VOIE ORALE
Anti-Inflammatory Quinic Acid Derivatives for Oral Administration
申请人:Yates Charles R.
公开号:US20090234015A1
公开(公告)日:2009-09-17
Disclosed are compounds comprising analogs of quinic acids or shikimic acids having anti-inflammatory properties. The compounds are suitable for oral administration, stable, and demonstrate significant efficacy in inhibiting NF-kB, inhibiting leukocyte adhesion, and inhibiting other factors and cytokines known to be involved in inflammatory disease.
Anti-Inflammatory Quinic Acid Derivatives for Radioprotection/Radiomitigation
申请人:Yates Charles Ryan
公开号:US20120283331A1
公开(公告)日:2012-11-08
Disclosed are methods of use of analogs of quinic acids or shikimic acids for protection from the harmful effects of radiation when administered either prior to radiation exposure, after radiation exposure, or both. These methods are useful for treating humans and animals exposed to radiation and at risk for radiation sickness and/or death as the result of radiation exposure.
Synthesis and biological evaluation of quinic acid derivatives as anti-inflammatory agents
作者:Kui Zeng、Karin Emmons Thompson、Charles R. Yates、Duane D. Miller
DOI:10.1016/j.bmcl.2009.07.096
日期:2009.9
Quinic acid (QA) esters found in hot water extracts of Uncaria tomentosa (a.k.a. cat's claw) exert anti-inflammatory activity through mechanisms involving inhibition of the pro-inflammatory transcription factor nuclear factor kappa B (NF-kappa B). Herein, we describe the synthesis and biological testing of novel QA derivatives. Inhibition of NF-kappa B was assessed using A549 (Type 11 alveolar epithelial-like) cells that stably express a secreted alkaline phosphatase (SEAP) reporter driven by an NF-kappa B response element. A549-NF-kappa B cells were stimulated with TNF-alpha (10 ng/mL) in the presence or absence of QA derivative for 18 hours followed by measurement of SEAP activity. Amide substitution at the carboxylic acid position yielded potent inhibitors of NF-kappa B. A variety of modifications to the amide substitution were tolerated with the N-propyl amide derivative being the most potent. Further examination of the SAR demonstrated that acetylation of the hydroxyl groups reduced NF-kappa B inhibitory activity. QA amide derivatives lacked anti-oxidant activity and were found to be neither anti-proliferative nor cytotoxic at concentrations up to 100 mu M. In conclusion, we have discovered a novel series of non-toxic QA amides that potently inhibit NF-kappa B, despite their lack of anti-oxidant activity. Mechanistic studies and pre-clinical efficacy studies in various inflammatory animal models are on-going. (C) 2009 Elsevier Ltd. All rights reserved.