4-arylbutan-2-ones: Starting Materials in the Synthesis of Novel Heme Oxygenase Inhibitors
Memoirs of the Scientific Sections of the Romanian Academy(2023)
摘要
Synthetic organic chemistry and medicinal chemistry are the most significant fields of research in chemistry, where 4-arylbutan-2-ones find applications by allowing access to chemical entities otherwise difficult to synthesize, or in the de novo development of drug candidates. Structure-aided design based on previous results from our group has led to advances in shaping the structure of a series of novel imidazolebased heme oxygenase inhibitors. The practical generation of these inhibitors requires the synthesis of a set of 4-arylbutan-2-ones to be employed as starting materials in a reaction sequence that would afford in the end the desired imidazole-containing inhibitor target compounds. The present report illustrates the use of an one-step alkylation–cleavage synthetic approach toward such 4-arylbutan-2-ones featuring, in most cases, a hydrophobic para-substituent in the aromatic ring, starting from low-cost, commercially available organic reagents (pentane-2,4-dione and the suitably substituted benzyl bromides). The work described in this study represents an extension of a synthetic entry to this type of organic compounds, previously exploited in our group for the preparation of several structural analogs. The identity of the obtained 4-arylbutan-2- ones was established using nuclear magnetic resonance spectroscopy and high resolution mass spectrometry.
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关键词
organic synthesis,chemical intermediates,ketones,alkylation– cleavage,structural investigation
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