This invention relates to benzodiazepine derivatives, compositions comprising therapeutically effective amounts of those benzodiazepine derivatives and methods of using those derivatives or compositions in treating central nervous system (CNS) disorders with cognitive impairment that are responsive to agonists of alpha5 subunit containing GABAA receptor, e.g., age-related cognitive impairment, Mild Cognitive Impairment (MCI), dementia, Alzheimer's Disease (AD), prodromal AD, post traumatic stress disorder (PTSD), schizophrenia and cancer-therapy-related cognitive impairment.