Substituted oxadiazole compounds corresponding to formula I:
in which X denotes CH, CH2, CH═CH, CH2CH2, CH2CH═CH or CH2CH2CH2; R1 denotes aryl or heteroaryl, in each case unsubstituted or mono- or polysubstituted; or a C1-3 alkyl group-linked aryl or heteroaryl group, in each case unsubstituted or mono- or polysubstituted; R2 denotes aryl or heteroaryl, in each case unsubstituted or mono- or polysubstituted; a C1-3 alkyl chain-attached aryl group, in each case unsubstituted or mono- or polysubstituted; and R3 and R4 independently denote H; C1-6 alkyl, in each case saturated or unsaturated, branched or unbranched, wherein R3 and R4 do not simultaneously mean H; or R3 and R4 together denote CH2CH2OCH2CH2, or (CH2)3-6. The compounds have an affinity for the μ-opioid receptor and may take the form of the racemate; enantiomers, diastereomers, mixtures of enantiomers or diastereomers, an individual enantiomer or diastereomer, a free base, or a salt with a physiologically acceptable acid.
公式I对应的是取代的噁二唑化合物:
其中,X代表CH,
CH2,CH═CH, , CH═CH或 ;
R1代表芳基或杂环芳基,均未取代或单取代或多取代;或C1-3烷基连接的芳基或杂环芳基,均未取代或单取代或多取代;
R2代表芳基或杂环芳基,均未取代或单取代或多取代;或C1-3烷基连接的芳基,均未取代或单取代或多取代;
R3和R4独立地代表H;C1-6烷基,饱和或不饱和,支链或直链,其中R3和R4不能同时代表H;或R3和R4共同代表 O 或( )3-6。这些化合物具有对μ-阿片受体的亲和力,可以形成外消旋体;对映异构体,非对映异构体的混合物,单个对映异构体或非对映异构体,自由碱基或与生理学上可接受的酸盐。