申请人:Kefalas A/S
公开号:US03951961A1
公开(公告)日:1976-04-20
The present invention relates to novel xanthene and thioxanthene derivatives of the following general formula: ##SPC1## Wherein Y represents sulfur or oxygen, R.sup.1 represents hydrogen, chlorine, trifluoromethyl or dimethylsulfamoyl, R.sup.2 represents hydrogen or fluorine; and R.sup.3 and R.sup.4 each represents hydrogen or methyl, provided that R.sup.3 and R.sup.4 may not both represent hydrogen, or R.sup.3 and R.sup.4 taken together with the nitrogen atom form a piperazine or piperidine ring optionally substituted in the 4-position by a methyl group or a 2-hydroxyethyl group, if desired, esterified with an aliphatic carboxylic acid having from 1 to 17 carbon atoms inclusive, as well as non-toxic acid addition salts thereof.
本发明涉及以下一般式的新型黄色素和噻黄素衍生物:其中Y代表硫或氧,R1代表氢、氯、三氟甲基或二甲基磺胺基,R2代表氢或氟;R3和R4各自代表氢或甲基,但R3和R4不能同时代表氢,或者R3和R4与氮原子一起形成一个哌嗪或哌啶环,该环在4位上可以选择地被甲基基团或2-羟乙基基团取代,如果需要,可以与具有1到17个碳原子的脂肪族羧酸酯化形成的非毒性酸盐。