申请人:Pfizer Inc.
公开号:US04066766A1
公开(公告)日:1978-01-03
A novel series of 1-oxo-1H-6-substitutedpyrimido[1,2-a]quinoline-2-carboxylic acids of the formula ##STR1## wherein each of R.sub.1, R.sub.2 and R.sub.3 is hydrogen, alkyl having from 1 to 5 carbon atoms, alkoxy having from 1 to 5 carbon atoms, carboalkoxy having from 1 to 5 carbon atoms in the alkoxy group, fluoro, chloro, bromo, methylthio or methylsulfinyl; with the proviso that no more than two of R.sub.1, R.sub.2 and R.sub.3 are bulky groups; i.e., branched-chain alkyl or branched-chain alkoxy, and when two of said R.sub.1, R.sub.2 and R.sub.3 are bulky groups they are located on non-adjacent positions; R.sub.4 is selected from the group consisting of chloro and bromo and --OR.sub.4 ' wherein OR.sub.4 ' is selected from the group consisting of alkoxy having from 1 to 5 carbon atoms, alkenyloxy of 3 to 4 carbon atoms and alkynyloxy of 3 to 4 carbon atoms; R.sub.5 is hydroxy, alkoxy having from 1 to 5 carbon atoms and hydroxy substituted alkoxy having from 2 to 5 carbon atoms; R.sub.2 and R.sub.3 when taken together are 1,3-butadienyl or alkylenedioxy of one to two carbon atoms; and the pharmaceutically-acceptable cationic salts of those compounds wherein R.sub.5 is hydroxy; compositions thereof; and their use as antiallergy agents.
一系列的1-氧代-1H-6-取代吡咯并[1,2-a]喹啉-2-羧酸化合物,其化学式为##STR1## 其中R.sub.1、R.sub.2和R.sub.3中的每一个都是氢、1到5个碳原子的烷基、1到5个碳原子的烷氧基、烷氧基中烷氧基上有1到5个碳原子的羧基烷氧基、氟、氯、溴、甲硫基或甲基磺酰基;但是R.sub.1、R.sub.2和R.sub.3中最多只有两个是笨重的基团;即支链烷基或支链烷氧基,当R.sub.1、R.sub.2和R.sub.3中有两个笨重的基团时,它们位于非相邻的位置;R.sub.4选自氯和溴的群,以及--OR.sub.4',其中OR.sub.4'选自有1到5个碳原子的烷氧基、3到4个碳原子的烯氧基和3到4个碳原子的炔氧基的群;R.sub.5是羟基、有1到5个碳原子的烷氧基和有2到5个碳原子的羟基取代的烷氧基;当R.sub.2和R.sub.3一起取代时,它们是1,3-丁二烯基或1到2个碳原子的烷基二氧基;以及这些化合物的药用可接受的阳离子盐,其中R.sub.5为羟基;它们的组成物;以及它们作为抗过敏剂的用途。