Salts of dihalo-2-quinoxaline carboxylic acids, their preparation and pharmaceutical formulations containing them
申请人:ELI LILLY AND COMPANY
公开号:EP0029658A1
公开(公告)日:1981-06-03
There is described novel hindered amine salts of 6,7 dihalo-3,4-dihydro-3 -oxo-2-quinoxaline carboxylic acids of the formula I:
wherein R and R1 are independently halogen; R2 is H, CH3, or C2H5; R3, when taken singly, is H, CH3, C2H5, C2H4OH, CH2C6H5 or CH2COOC2H5; R4, when taken singly, is a hindered hydrocarbyl radical of the group consisting of cycloactyl, norbornyl, Ad and CHR2Ad wherein Ad is a 1-adamantyl, a 2-adamantyl, a 3-(4-homoiso) twistane or a tricycloundecane radical; and R3 and R4 when taken together with the nitrogen to which they are attached, form an adamantylspiropyrrolidine radical. The compounds are prepared by treatment of the free acid with the free base or a salt of the appropriate hindered amine. They are effective antiviral agents in mammels.
描述了式 I 的 6,7-二卤-3,4-二氢-3-氧代-2-喹喔啉羧酸的新型受阻胺盐:
其中 R 和 R1 独立地为卤素;R2 为 H、CH3 或 C2H5;R3 单个时为 H、CH3、C2H5、C2H4OH、CH2C6H5 或 CH2COOC2H5;单个 R4 是环内酯、降冰片烷基、Ad 和 CHR2Ad 所组成的组中的受阻烃基,其中 Ad 是 1-金刚烷基、2-金刚烷基、3-(4-异构)扭烷基或三环十一烷基;R3 和 R4 与它们所连接的氮一起形成金刚烷基-螺咯烷基。这些化合物是用游离碱或适当的受阻胺盐处理游离酸而制备的。它们是哺乳动物的有效抗病毒剂。