Novel pyrimidine derivatives and methods of making and using these derivatives
申请人:——
公开号:US20020052384A1
公开(公告)日:2002-05-02
This invention discloses pyrimidine derivatives, and pharmaceutically acceptable salts and prodrugs thereof, useful in therapeutically and/or prophylactically treating patients with an illness. Such illnesses include cancer, and secondary infections caused by
Pneumocystis carinii
and
Toxoplasmosis gondii
in immunocompromised patients. The compounds themselves, methods of making these compounds, and methods of using these compounds are all disclosed.
Pyrimidine derivatives and methods of making and using these derivatives
申请人:——
公开号:US20030144509A1
公开(公告)日:2003-07-31
This invention discloses compounds, and pharmaceutically acceptable salts thereof, useful in therapeutically and/or prophylactically treating patients with an illness. Such illnesses include cancer, and secondary infections caused by
Pneumocystis carinii
and
Toxoplasmosis gondii
in immunocompromised patients. The compounds themselves, methods of making these compounds, and methods of using these compounds are all disclosed.
New small-molecule inhibitors of dihydrofolate reductase inhibit Streptococcus mutans
作者:Qiong Zhang、Thao Nguyen、Megan McMichael、Sadanandan E. Velu、Jing Zou、Xuedong Zhou、Hui Wu
DOI:10.1016/j.ijantimicag.2015.03.015
日期:2015.8
Streptococcus mutans is a major aetiological agent of dental caries. Formation of biofilms is a key virulence factor of S. mutans. Drugs that inhibit S. mutans biofilms may have therapeutic potential. Dihydrofolate reductase (DHFR) plays a critical role in regulating the metabolism of folate. DHFR inhibitors are thus potent drugs and have been explored as anticancer and antimicrobial agents. In this study, a library of analogues based on a DHFR inhibitor, trimetrexate (TMQ), an FDA-approved drug, was screened and three new analogues that selectively inhibited S. mutans were identified. The most potent inhibitor had a 50% inhibitory concentration (IC50) of 454.0 +/- 10.2 nM for the biofilm and 8.7 +/- 1.9 nM for DHFR of S. mutans. In contrast, the IC50 of this compound for human DHFR was ca. 1000 nM, a > 100-fold decrease in its potency, demonstrating the high selectivity of the analogue. An analogue that exhibited the least potency for the S. mutans biofilm also had the lowest activity towards inhibiting S. mutans DHFR, further indicating that inhibition of biofilms is related to reduced DHFR activity. These data, along with docking of the most potent analogue to the modelled DHFR structure, suggested that the TMQ analogues indeed selectively inhibited S. mutans through targeting DHFR. These potent and selective small molecules are thus promising lead compounds to develop new effective therapeutics to prevent and treat dental caries. (C) 2015 Elsevier B.V. and the International Society of Chemotherapy. All rights reserved.
METHODS OF PREPARATION AND RESOLUTION OF E/Z ISOMERS OF VINYLFURO[2,3-D]PYRIMIDINE AND THEIR BIOLOGICAL ACTIVITIES AND RELATED COMPOSITIONS AND METHODS OF TREATMENT
申请人:Gangjee Aleem
公开号:US20070238742A1
公开(公告)日:2007-10-11
Stereoselective methods for preparing the individual isomers, E- and Z-2,4-substituted-5-vinylfuro[2,3-d]pyrimidine and pharmaceutically acceptable salts, solvates, and prodrugs thereof using selective synthetic conditions are provided. This class of pyrimidine compounds function as receptor tyrosine kinase inhibitors during angiogenesis and resists the development of new blood vessels in tumors as well as inhibit the folate pathway required for cell growth. The isomers of these compounds are separated by physical, chromatographic, and/or HPLC methods. Their biological activities are described. Also provided are methods of treating diseases associated with angiogenesis in a patient comprising administering the isolated E- and Z-isomers of the composition of the present invention.