Structure–activity relationships of tyrosinase inhibitory combinatorial library of 2,5-disubstituted-1,3,4-oxadiazole analogues
摘要:
Here the tyrosinase inhibition studies of library of 2,5-disubstituted-1,3,4-oxadiazoles have been reported and their structure-activity relationship (SAR) also have been discussed. The library of the oxadiazoles was synthesized under the microwave irradiation and was structures of these were characterized by different spectral techniques. From this study it could be concluded that for a better inhibition of tyrosinase, electronegative substitution is essential as most probably the active site of the enzyme contain some hydrophobic site and position is also very important for the inhibition purposes due to the conformational space. The electronegativity of the compounds is somewhat proportional to the inhibitory activity. The compound 3e (3 '-[5-(4 '-bromophenyl)-1,3,4-oxadiazol-2-yl]pyridine) exhibited most potent (IC50 = 2.18 mu M) inhibition against the enzyme tyrosinase which is more potent than the standard potent inhibitor L-mimosine IC50 = 3.68 mu M). This molecule can be the best candidate as a lead compound for further development of drug for the treatments of several skin disorders. (c) 2005 Elsevier Ltd. All rights reserved.
The invention relates to heterocyclic derivatives, compositions comprising such compounds, and methods of preventing or treating conditions and disorders using such compounds and compositions. The heterocyclic derivatives, more particularly can be substituted oxadiazole compounds and derivatives thereof.
Novel 1,2,4 Oxadiazole Compounds and Methods of Use Thereof
申请人:Ji Jianguo
公开号:US20080269236A1
公开(公告)日:2008-10-30
The invention relates to 1,2,4 oxadiazole compounds and analogs thereof, represented by formula (II), and compositions and methods of use thereof.
本发明涉及1,2,4-噁二唑化合物及其类似物,由式(II)所表示,以及其组合物和使用方法。
Pharmaceutical compositions and their methods of use
申请人:Gopalakrishnan Murali
公开号:US20080167286A1
公开(公告)日:2008-07-10
The invention relates to a composition comprising a neuronal nicotinic receptor ligand and an α4β2 positive allosteric modulator, a method of using the same, and a related article of manufacture.
PHARMACEUTICAL COMPOSITIONS AND THEIR METHODS OF USE
申请人:Gopalakrishnan Murali
公开号:US20110190314A1
公开(公告)日:2011-08-04
The invention relates to a composition comprising a neuronal nicotinic receptor ligand and an α4β2 positive allosteric modulator, a method of using the same, and a related article of manufacture.
Pharmaceutical Compositions for the Treatment of Pain
申请人:Gopalakrishnan Murali
公开号:US20100305086A1
公开(公告)日:2010-12-02
This invention discloses a method of treatment of osteoarthritis pain by administration of a composition containing a nicotinic acetylcholine receptor ligand and a nicotinic acetylcholine receptor subtype α4β2 allosteric modulator. The present application also relates to compositions comprising such compounds for use in treating pain and related disorders mediated by controlling neurotransmitter release in a subject.