Chiral switches have been successful in two non-steroidal anti-inflammatory drugs (NSAIDs) \u2013 ibuprofen and ketoprofen. The switch of ibuprofen is based on chiral inversion; (\u00b1)- and (S)-ibuprofen can be viewed as being essentially bioequivalent\u2019. <\/em>Ibuprofen carries a stereogenic center in the propanoic acid side chain and exists as a pair of enantiomers. Dexibuprofen is (S)-(+)-Ibuprofen.<\/p>\n\n\n\n Chiral Inversion<\/strong><\/p>\n\n\n\n COX inhibition resides exclusively in the (S<\/em>)-enantiomer, as shown by in vitro <\/em>studies in a wide range of test systems. However, the activities of the two enantiomers of many profens are essentially indistinguishable in vivo<\/em>, due to the unidirectional metabolic bioconversion of the (R<\/em>)-enantiomer to the (S<\/em>)-enantiomer, referred to as chiral inversion. The extent of this inversion differs between compounds and species, and in some cases, the inactive (R<\/em>)-enantiomers are pro-drugs for the active (S<\/em>)-forms.<\/p>\n\n\n\n Nomenclature<\/strong><\/p>\n\n\n\n (2S<\/em>)-2-[4-(2-methylpropyl)phenyl]propanoic acid<\/p>\n\n\n\n Exercise<\/strong><\/p>\n\n\n\n Understand the phenomenon of chiral inversion <\/p>\n\n\n\n References<\/strong><\/p>\n\n\n\n Israel Agranat, Hava Caner and John Caldwell, Nature reviews, Drug Discovery, 1, October,| 753-768, 2002.<\/p>\n\n\n\n Chiral switch. Wikipedia, Wikipedia Foundation, 201\/08\/2022. https:\/\/en.wikipedia.org\/wiki\/Chiral_switch<\/a><\/p>\n\n\n\n Lien Ai Nguyen, Hua He, and Chuong Pham-Huy, Chiral drugs: An overview, Int J. Biomed. Sci. 1,2,85-100, 2006; https:\/\/www.ncbi.nlm.nih.gov\/pmc\/articles\/PMC3614593\/<\/a><\/p>\n","protected":false},"excerpt":{"rendered":" The chiral switches of \u2018profen\u2019 NSAIDs Chiral switches have been successful in two non-steroidal anti-inflammatory drugs (NSAIDs) \u2013 ibuprofen and ketoprofen. The switch of ibuprofen is based on chiral inversion; (\u00b1)- and (S)-ibuprofen can be viewed as being essentially bioequivalent\u2019. Ibuprofen carries a stereogenic center in the propanoic acid side chain and exists as a pair of enantiomers. Dexibuprofen is (S)-(+)-Ibuprofen. Chiral Inversion COX inhibition resides exclusively in the (S)-enantiomer, as shown by in vitro studies …<\/p>\n![\"\"](\"https:\/\/chiralpedia.com\/blog\/wp-content\/uploads\/2022\/07\/Dexibuprofen_780\u00d7300_3D_Conformer-1.png\")
![\"\"](\"https:\/\/chiralpedia.com\/blog\/wp-content\/uploads\/2022\/07\/ibuprofen-cMOTW-2.png\")
<\/figure>\n\n\n\n