INACTIVATORS OF TOXOPLASMA GONDII ORNITHINE AMINOTRANSFERASE FOR TREATING TOXOPLASMOSIS AND MALARIA
申请人:Northwestern University
公开号:US20180098952A1
公开(公告)日:2018-04-12
Disclosed are methods, compounds, and compositions for treating infection by an Apicomplexan parasite that include administering a compound that selectively inactivates ornithine aminotransferase of the Apicomplexan parasite. Specifically, the methods, compounds, compounds may be utilized for treating infection by
Toxoplasma gondii
and toxoplasmosis and for treating infection by
Plasmodium falciparum
and malaria. The compounds disclosed herein are observed to selectively inactivate
Toxoplasma gondii
ornithine aminotransferase (TgOAT) relative to human OAT and relative to human γ-aminobutyric aminotransferase (GABA-AT).
To identify an orally available drug candidate, a series of 3-benzoylaminophenylacetic acids were synthesized and evaluated as prostaglandin D-2 (PGD(2)) receptor antagonists. Some of the compounds tested were found to exhibit excellent inhibitory activity against cAMP accumulation in human platelet rich plasma (hPRP), which is one of the indexes of DP antagonism. The optimization process including improvement of the physicochemical properties such as solubility, which may result in an improved pharmacokinetic (PK) profile, is presented. Optimized compounds were studied for their pharmacokinetics and in vivo potential. A structure-activity relationship study is also presented. Some of the test compounds were found to have in vivo efficacy towards the inhibition of PGD(2)-induced and OVA-induced vascular permeability in guinea pig conjunctiva. (C) 2011 Elsevier Ltd. All rights reserved.
Design and synthesis of new prostaglandin D2 receptor antagonists
作者:Maki Iwahashi、Eiji Takahashi、Motoyuki Tanaka、Yoko Matsunaga、Yutaka Okada、Ryoji Matsumoto、Fumio Nambu、Hisao Nakai、Masaaki Toda
DOI:10.1016/j.bmc.2011.08.007
日期:2011.9
To identify new cost-effective prostaglandin D2 (DP) receptor antagonists, a series of novel 3-benzoylaminophenylacetic acids were synthesized and biologically evaluated. Among those tested, some representative compounds were found to be orally available. Receptor selectivity and rat PK profiles were also evaluated. The structure–activity relationship (SAR) study is presented.