Optimization of Chromone-2-carboxamide Melanin Concentrating Hormone Receptor 1 Antagonists: Assessment of Potency, Efficacy, and Cardiovascular Safety
摘要:
Evaluation of multiple structurally distinct series of melanin concentrating hormone receptor 1 antagonists in an anesthetized rat cardiovascualar assay led to the identification of a chromone-2-carboxamide series as having excellent safety against the chosen cardiovascular endpoints at high drug concentrations in the plasma and brain. Optimization of this series led to considerable improvements in affinity, functional potency, and pharmacokinetic profile. This led to the identification of a 7-fluorochromone-2-carboxamide (22) that was orally efficacious in a diet-induced obese mouse model, retained a favorable cardiovascular profile in rat, and demonstrated dramatic improvement in effects on mean arterial pressure in our dog cardiovascular model compared to other series reported by our group. However, this analogue also led to prolongation of the QT interval in the dog that was linked to affinity for hERG channel and unexpectedly potent functional blockade of this ion channel.
Optimization of Chromone-2-carboxamide Melanin Concentrating Hormone Receptor 1 Antagonists: Assessment of Potency, Efficacy, and Cardiovascular Safety
摘要:
Evaluation of multiple structurally distinct series of melanin concentrating hormone receptor 1 antagonists in an anesthetized rat cardiovascualar assay led to the identification of a chromone-2-carboxamide series as having excellent safety against the chosen cardiovascular endpoints at high drug concentrations in the plasma and brain. Optimization of this series led to considerable improvements in affinity, functional potency, and pharmacokinetic profile. This led to the identification of a 7-fluorochromone-2-carboxamide (22) that was orally efficacious in a diet-induced obese mouse model, retained a favorable cardiovascular profile in rat, and demonstrated dramatic improvement in effects on mean arterial pressure in our dog cardiovascular model compared to other series reported by our group. However, this analogue also led to prolongation of the QT interval in the dog that was linked to affinity for hERG channel and unexpectedly potent functional blockade of this ion channel.
Optimization of Chromone-2-carboxamide Melanin Concentrating Hormone Receptor 1 Antagonists: Assessment of Potency, Efficacy, and Cardiovascular Safety
作者:John K. Lynch、Jennifer C. Freeman、Andrew S. Judd、Rajesh Iyengar、Mathew Mulhern、Gang Zhao、James J. Napier、Dariusz Wodka、Sevan Brodjian、Brian D. Dayton、Doug Falls、Christopher Ogiela、Regina M. Reilly、Thomas J. Campbell、James S. Polakowski、Lisa Hernandez、Kennan C. Marsh、Robin Shapiro、Victoria Knourek-Segel、Brian Droz、Eugene Bush、Michael Brune、Lee C. Preusser、Ryan M. Fryer、Glenn A. Reinhart、Kathryn Houseman、Gilbert Diaz、Ann Mikhail、James T. Limberis、Hing L. Sham、Christine A. Collins、Philip R. Kym
DOI:10.1021/jm060683e
日期:2006.11.1
Evaluation of multiple structurally distinct series of melanin concentrating hormone receptor 1 antagonists in an anesthetized rat cardiovascualar assay led to the identification of a chromone-2-carboxamide series as having excellent safety against the chosen cardiovascular endpoints at high drug concentrations in the plasma and brain. Optimization of this series led to considerable improvements in affinity, functional potency, and pharmacokinetic profile. This led to the identification of a 7-fluorochromone-2-carboxamide (22) that was orally efficacious in a diet-induced obese mouse model, retained a favorable cardiovascular profile in rat, and demonstrated dramatic improvement in effects on mean arterial pressure in our dog cardiovascular model compared to other series reported by our group. However, this analogue also led to prolongation of the QT interval in the dog that was linked to affinity for hERG channel and unexpectedly potent functional blockade of this ion channel.