Optimization of Platelet-Derived Growth Factor Receptor (PDGFR) Inhibitors for Duration of Action, as an Inhaled Therapy for Lung Remodeling in Pulmonary Arterial Hypertension
摘要:
A series of potent PDGFR inhibitors has been identified. The series was optimized for duration of action in the lung. A novel kinase occupancy assay was used to directly measure target occupancy after i.t. dosing. compound 25 shows 24 h occupancy of the PDGFR kinase domain; after a single i.t. dose and has efficacy at 0.03 mg/kg, in the rat moncrotaline model of pulmonary arterial hypertension. Examination of PK/PD data from the optimization effort has revealed in vitro in vivo correlations which link duration of action in vivo with low permeability and high basicity and demonstrate that nonspecific binding to lung tissue increases with lipophilicity.
Optimization of Platelet-Derived Growth Factor Receptor (PDGFR) Inhibitors for Duration of Action, as an Inhaled Therapy for Lung Remodeling in Pulmonary Arterial Hypertension
摘要:
A series of potent PDGFR inhibitors has been identified. The series was optimized for duration of action in the lung. A novel kinase occupancy assay was used to directly measure target occupancy after i.t. dosing. compound 25 shows 24 h occupancy of the PDGFR kinase domain; after a single i.t. dose and has efficacy at 0.03 mg/kg, in the rat moncrotaline model of pulmonary arterial hypertension. Examination of PK/PD data from the optimization effort has revealed in vitro in vivo correlations which link duration of action in vivo with low permeability and high basicity and demonstrate that nonspecific binding to lung tissue increases with lipophilicity.
[EN] BICYCLIC HETEROCYCLE DERIVATIVES FOR THE TREATMENT OF PULMONARY ARTERIAL HYPERTENSION<br/>[FR] DÉRIVÉS HÉTÉROCYCLIQUES BICYCLIQUES POUR LE TRAITEMENT D'UNE HYPERTENSION ARTÉRIELLE PULMONAIRE
申请人:NOVARTIS AG
公开号:WO2013030802A1
公开(公告)日:2013-03-07
Bicyclic heterocyclic derivatives of formula (I) useful in inhibiting PDGF receptor mediated biological activity. Wherein A is and R1, R1a, R2, R3, R4, R5, R6 and X are as defined herein.
BICYCLIC HETEROCYCLE DERIVATIVES FOR THE TREATMENT OF PULMONARY ARTERIAL HYPERTENSION
申请人:Bruce Ian
公开号:US20150025059A1
公开(公告)日:2015-01-22
Bicyclic heterocyclic derivatives of formula I useful in inhibiting PDGF receptor mediated biological activity.
wherein A is
and R
1
, R
1a
, R
2
, R
3
, R
4
, R
5
, R
6
and X are as defined herein.