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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 

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Synthesis and biological evaluations of quinoline-based HMG-CoA reductase inhibitors.

A series of quinoline-based 3,5-dihydroxyheptenoic acid derivatives were synthesized from quinolinecarboxylic acid esters by homologation, aldol condensation with ethyl acetoacetate dianion, and reduction of 3-hydroxyketone to evaluate their ability to inhibit the enzyme HMG-CoA reductase in vitro. In agreement with previous literature, a strict structural requirement exists on the external ring, and 4-fluorophenyl is the most active in this system. For the central ring, substitution on positions 6, 7, and 8 of the central quinoline nucleus moderately affected the potency, whereas the alkyl side chain on the 2-position had a more pronounced influence on activity. Among the derivatives, NK-104 (pitavastatin calcium), which has a cyclopropyl group as the alkyl side chain, showed the greatest potency. We found that further modulation and improvement in potency at inhibiting HMG-CoA reductase was obtained by having the optimal substituents flanking the desmethylmevalonic acid portion, that is, 4-fluorophenyl and cyclopropyl, instead of the usual isopropyl group.[1]

References

  1. Synthesis and biological evaluations of quinoline-based HMG-CoA reductase inhibitors. Suzuki, M., Iwasaki, H., Fujikawa, Y., Kitahara, M., Sakashita, M., Sakoda, R. Bioorg. Med. Chem. (2001) [Pubmed]
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