Efficacy and Safety Trial With S 44819 After Recent Ischemic Cerebral Event

Inclusion criteria : * Patients aged between 18 and 85 years (both inclusive) * Acute ischemic stroke that occured between 72 hours (3 days) and 192 hours (8 days) (both inclusive) before inclusion Exclusion criteria : * Any non-selection criteria, which could have occurred after the selection visit * Positive urinary or blood pregnancy test (for female patients of child bearing potential) * Any clinically significant findings from the local laboratory test likely to interfere with the ability to participate in the study and / or with the study outcome * Severe renal impairment detected in the local laboratory test * Severe hepatic impairment or liver enzymes abnormalities found in the local laboratory test * Stroke due to cerebral venous thrombosis * Brain MRI showing a severe microangiopathy * Brain imaging showing an acute haemorrhagic stroke or a symptomatic haemorrhagic transformation of the brain infarct * Qualifying ischemic cerebral event older than 192 hours at inclusion * Any clinically relevant abnormalities detected during the examinations likely to interfere with study procedures or study outcome, * Repeated prolongation of ECG QTcF * Patient or authorised representative refusing to attend study visits or to take part in the study