This invention encompasses compounds of the formula: ##STR1## and the pharmaceutically acceptable non-toxic salts thereof wherein X and Y are the same or different and represent oxygen or H.sub.2 with the proviso that not both X and Y are H.sub.2 ; W represents phenyl, thienyl, or pyridyl, each of which may be unsubstituted or momo or disubstituted with organic or inorganic substituents; and R.sub.1, R.sub.2, R.sub.3, and R.sub.4 are variables representing organic and inorganic substituents. 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.
本发明涵盖以下化合物的公式:##STR1##及其药学上可接受的非毒性盐,其中X和Y相同或不同,代表氧或H.sub.2,但X和Y不同时为H.sub.2; W代表苯基、
噻吩基或
吡啶基,每种基团可以是未取代的或单取代或双取代的有机或无机基团;而R.sub.1、R.sub.2、R.sub.3和R.sub.4是表示有机和无机取代基的变量。这些化合物是高度选择性的
GABAa脑受体激动剂、拮抗剂或反向激动剂,或其前药,并且在焦虑、睡眠和癫痫障碍、苯二氮卓类药物过量和增强记忆的诊断和治疗中有用。