We report the discovery of antibacterial leads, keto- and diketo-acids, targeting two prenyl transferases: undecaprenyl diphosphate synthase (UPPS) and dehydrosqualene synthase (CrtM). The leads were suggested by the observation that keto- and diketo-acids bind to the active site Mg2+/Asp domain in HIV-1 integrase, and similar domains are present in prenyl transferases. We report the X-ray crystallographic structures of one diketo-acid and one keto-acid bound to CrtM, which supports the Mg2+ binding hypothesis, together with the X-ray structure of one diketo-acid bound to UPPS. In all cases, the inhibitors bind to a farnesyl diphosphate substrate-binding site. Compound 45 had cell growth inhibition MIC90 values of similar to 250-500 ng/mL against Staphylococcus aureus, 500 ng/mL against Bacillus anthracis, 4 mu g/mL against Listeria monocytogenes and Enterococcus faecium, and 1 mu g/mL against Streptococcus pyogenes M1 but very little activity against Escherichia coli (DH5 alpha, K12) or human cell lines.
Design, Synthesis, and Characterization of Ogerin-Based Positive Allosteric Modulators for G Protein-Coupled Receptor 68 (GPR68)
作者:Xufen Yu、Xi-Ping Huang、Terry P. Kenakin、Samuel T. Slocum、Xin Chen、Michael L. Martini、Jing Liu、Jian Jin
DOI:10.1021/acs.jmedchem.9b00869
日期:2019.8.22
protein-coupled receptor 68 (GPR68) is an understudied orphan G protein-coupled receptor (GPCR). It is expressed most abundantly in the brain, potentially playing important roles in learning and memory. Pharmacological studies with GPR68 have been hindered by lack of chemical tools that can selectively modulate its activity. We previously reported the first small-molecule positive allosteric modulator (PAM)
Solubilization and Targeted Delivery of Drugs With Self-Assembling Amphiphilic Polymers
申请人:Diwan Anil
公开号:US20100260743A1
公开(公告)日:2010-10-14
There are provided amphiphilic biodegradable copolymers comprising a hydrophilic backbone with pendant aliphatic groups as the hydrophobic component. The polymers form nanoscale molecular aggregates in aqueous environments, which have hydrophobic interiors that are capable of solubilizing insoluble organic compounds such as drugs, vitamins, dyes, and imaging agents. The polymers optionally feature reactive functional groups that provide attachment points for antibodies, ligands, and other targeting moieties useful for the targeted delivery of drugs and imaging agents.
SELF ASSEMBLING AMPHIPHILIC POLYMERS AS ANTIVIRAL AGENTS
申请人:Diwan Anil
公开号:US20100008938A1
公开(公告)日:2010-01-14
There are provided amphiphilic biodegradable copolymers comprising a hydrophilic backbone with pendant aliphatic groups as the hydrophobic component. The polymers form nanoscale molecular aggregates in aqueous environments, which have hydrophobic interiors that are capable of solubilizing insoluble organic compounds and disrupting viral coat proteins. The polymers optionally feature reactive functional groups that provide attachment points for antibodies, ligands, and other targeting moieties which mediate adherence of the aggregate to a viral target.
Isoindolone compounds and their use as metabotropic glutamate receptor potentiators
申请人:Clayton Joshua
公开号:US20090275578A1
公开(公告)日:2009-11-05
The present invention is directed to compounds of formula I:
wherein R
1
, R
2
, R
3
, R
4
, R
5
, R
6
, R
7
, R
8
, R
9
and n are as defined for formula I in the description. The invention also relates to processes for the preparation of the compounds and to new intermediates employed in the preparation, pharmaceutical compositions containing the compounds, and to the use of the compounds in therapy.
SELF-ASSEMBLING AMPHIPHILIC POLYMERS AS ANTI-CANCER AGENTS
申请人:Diwan Anil R.
公开号:US20100239659A1
公开(公告)日:2010-09-23
The invention provides amphiphilic biocompatible copolymers which have a hydrophilic backbone and pendant hydrophobic groups. The polymers form nanoscale molecular aggregates in aqueous environments, which have hydrophobic interiors within which anticancer drugs may be solubilized. The polymers optionally feature attached antibodies, receptor ligands, and other targeting moieties which mediate adherence of the drug-carrying aggregates to targeted cancer cells.