上游充通大￥ Shanghai Jiao Tong University Sedative-hypnotics >benzodiazepines(苯二氮卓类) widely used clinically now barbiturates (巴比妥类) classical drugs > other newly used drugsShanghai Jiao Tong University Ø benzodiazepines （苯二氮卓类） widely used clinically now Ø barbiturates （巴比妥类） classical drugs Ø other newly used drugs Sedative-hypnotics