The 2-cyano-3-or 4-(substituted amino) oxanilic acid derivatives of the formula: ##STR1## in which the group ##STR2## appears in the designated 3- or 4- position and R is --H; an alkali metal; .sup.+ NH.sub.4 ; alkyl of 1 to 6 carbon atoms, inclusive; aralkyl of 7 or 8 carbon atoms; or cycloalkyl of 5 or 6 carbon atoms; R.sup.1 is --H or alkyl of 1 to 9 carbon atoms; R.sup.2 is --H, alkyl of 1 to 9 carbon atoms or cycloalkyl of 3 to 6 carbon atoms; R.sup.1 and R.sup.2, together, with the nitrogen atom to which they are attached, are aziridinyl, azetidinyl, pyrrolidinyl, piperidinyl, piperazinyl, 4-lower alkyl-piperazinyl, morpholino or thiomorpholino; And pharmaceutically acceptable acid addition salts thereof are anti-allergic agents.
公式为:##STR1##的2-
氰基-3-或4-(取代
氨基)氧化
苯乙酸衍
生物,其中基团##STR2##出现在指定的3-或4-位置,R为--H;碱
金属;.sup.+ NH.sub.4;1至6个碳原子的烷基,包括;7或8个碳原子的芳基烷基;或5或6个碳原子的环烷基;R.sup.1为--H或1至9个碳原子的烷基;R.sup.2为--H,1至9个碳原子的烷基或3至6个碳原子的环烷基;R.sup.1和R.sup.2与它们附着的氮原子一起,是氮杂环丙基,氮杂环戊基,
吡咯烷基,
哌啶基,
哌嗪基,4-低烷基
哌嗪基,吗啉或
硫代吗啉;以及其药学上可接受的酸盐是抗过敏剂。