申请人:Pfizer Inc.
公开号:US03966951A1
公开(公告)日:1976-06-29
Disclosed herein are novel esters of quinoxaline-1,4-dioxide of the structure ##SPC1## In which X is selected from the group consisting of a single bond, lower n-alkylene and --(CH.sub.2).sub.p --CH=CH--(CH.sub.2).sub.q -- where p and q may have integral values from zero to four with the proviso that p+q is less than or equal to four; A is selected from the group consisting of hydrogen, hydroxyl, lower alkyl, lower alkoxy, fluorine, chlorine, bromine, iodine, cyano and trifluoromethyl; And R is selected from the group consisting of hydrogen, lower alkanoyl and .alpha.-hydroxy lower alkyl. When administered to animals, these compounds function as antibacterial agents, promote growth and improve feed efficiency. They are particularly useful in the prophylaxis and treatment of pasturellosis and salmonellosis and are notable for their extremely low toxicity in the test animal.
本文揭示了一种新型喹喔啉-1,4-二氧化物酯的结构,其中X从以下组中选择:单键,较低的n-烷基和--(CH.sub.2).sub.p --CH=CH--(CH.sub.2).sub.q --,其中p和q可以是从零到四的整数值,条件是p+q小于或等于四;A从以下组中选择:氢,羟基,较低的烷基,较低的烷氧基,氟,氯,溴,碘,氰基和三氟甲基;R从以下组中选择:氢,较低的烷酰基和α-羟基较低的烷基。当这些化合物被用于动物时,它们作为抗菌剂发挥作用,促进生长并提高饲料效率。它们在预防和治疗牛瘟和沙门氏菌病方面特别有用,并以试验动物中极低的毒性而闻名。