Pyrrolobenzoxazines, pyrrolobenzothiazines and process therefor
申请人:Ayerst McKenna and Harrison Ltd.
公开号:US04035495A1
公开(公告)日:1977-07-12
4H-Pyrrolo[2,1-c][1,4]benzoxazines and 4H-pyrrolo[2,1-c]-[1,4]benzothiazines characterized by having an alkylamine substituent at position 4 are disclosed. The compounds are characterized further by having an alkyl substituent on the same carbon atom bearing the alkylamine substituent. In addition the compounds may be optionally substituted at positions 1 and 6 to 9. Also disclosed are 4H-pyrrolo-[2,1-c][1,4]benzoxazines and 4H-pyrrolo[2,1-c][1,4]benzothiazines which are dialkylated at position 4 and have a methylamino substituent at position 1. The foregoing compounds possess antihypertensive and central nervous system depressant activity and methods for their preparation and use are described.
condensations of 1-(2-hydroxyphenyl) pyrroles with a variety of carbonyl compounds are shown to give new 4-substituted-4H-4-methylpyrrolo[2,1-c][1,4]benzoxazines. Some of the products were further functionalized. The ir, uv, and pmr spectra of the title heterocyclic system are discussed. Reaction of 1-(2-hydroxyphenyl) pyrrole with dimethylacetylenedicarboxylate yielded dimethyl 3-(2-hydroxyanilino) phthalale;
显示1-(2-羟苯基)吡咯与多种羰基化合物的缩合反应产生新的4-取代的-4 H -4-甲基吡咯并[2,1- c ] [1,4]苯并恶嗪。一些产品被进一步功能化。讨论了标题杂环系统的ir,uv和pmr光谱。1-(2-羟基苯基)吡咯与乙炔二羧酸二甲酯反应,生成3-(2-羟基苯胺基)邻苯二甲酸二甲酯。解释结果的机械原理涉及假想的Diels-Alder加合物的重排。