Abstract
In the course of our studies directed towards the discovery of novel non-steroidal anti-inflammatory agents (NSAIDs), which are expected to have improved drug efficacy and better toxicity profile than diclofenac, we have synthesized new derivatives of diclofenac phosphonates. These phosphonate analogs were efficiently prepared from commercially available 2-hydroxymethylaniline in three steps. The 2-hydroxymethylaniline was converted to the azide in reasonable yield. Click chemistry with a variety of alkynes followed by Arbuzov reaction resulted in a series of triazole based phosphonate products. Our inhibitors are designed to reduce the gastrointestinal bleeding caused by diclofenac by substituting the carboxylic acid group with the phosphonate group and in addition replacing with the triazole ring would allow the flexibility to explore the importance of both hydrophilicity and hydrophobicity of the ring at the active site.
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