The invention encompasses compounds of the formula: ##STR1## and the pharmaceutically acceptable salts thereof wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, and X are variables; and W is phenyl optionally substituted with straight or branched chain lower alkyl having 1-6 carbon atoms or straight or branched chain lower alkoxy having 1-6 carbon atoms. These compounds are highly selective agonists, antagonists or inverse agonists for GABAa brain receptors or prodrugs thereof and are useful in the diagnosis and treatment of anxiety, sleep, and seizure disorders, overdose with benzodiazepine drugs, and enhancement of memory.
本发明涵盖以下式的化合物:##STR1##及其药学上可接受的盐,其中R.sub.1,R.sub.2,R.sub.3,R.sub.4和X是变量;W是苯基,可选用直链或支链低碳链烷基,其具有1-6个碳原子或直链或支链低碳链烷氧基,其具有1-6个碳原子。这些化合物是高度选择性的
GABAa脑受体的激动剂,拮抗剂或反向激动剂或其前药,可用于诊断和治疗焦虑、睡眠和癫痫障碍、苯二氮卓类药物过量和增强记忆。