Title:The Structure–property Relationships of Clinically Approved Protein
Kinase Inhibitors
Volume: 30
Issue: 22
Author(s): Kihang Choi
Affiliation:
Keywords:
Structure–property relationship, protein kinase inhibitors, solubilizing groups, lead optimization, candidate selection, drug discovery.
Abstract:
Background: Protein kinase inhibitors have become one of the most successful
classes of small-molecule drugs during the last decades. In modern drug discovery, considering
‘drug-like’ physicochemical and pharmacokinetic properties as early as possible in
drug design is widely acknowledged as an important strategy to reduce drug attrition rates.
Methods: In this review, clinically approved 25 protein kinase inhibitors and their key analogues
reported in medicinal chemistry literature were compared for their biological,
physicochemical, and pharmacokinetic properties. Although there is no common trajectory
to follow through complex drug discovery campaigns, knowledge of the structure–
activity relationship obtained from the successful lead optimization studies might be extended
to other drug design efforts.
Results: Among more than 70 protein kinase inhibitors clinically approved around the
world, the structure–activity relationships of 25 inhibitors and their key analogues are
compiled from medicinal chemistry literature, in which detailed results from the ‘lead-tocandidate’
stage are available with associated property data. For the other inhibitors, such
information has not been disclosed in the literature, or the available data is limited and not
sufficient to provide clear structural analysis.
Conclusion: The structure–property relationships summarized for 25 inhibitors and their
analogues illustrate general guidelines for lead optimization and candidate selection, and
this information could be extended for better property-based drug design in the future.