Abstract: Compounds of the formula ##STR1## wherein R.sub.1 is hydrogen or alkyl of 1 to 4 carbon atoms;R.sub.2 is hydrogen, methyl, hydroxyl, alkoxy of 1 to 4 carbon atoms, di(alkyl of 1 to 2 carbon atoms)amino-(alkoxy of 1 to 4 carbon atoms) or NHCOCOOR.sub.1 ;R.sub.3 is hydrogen or NHCOCOOR.sub.1 ;A is ##STR2## R.sub.4 is hydrogen, methyl, alkoxy of 1 to 4 carbon atoms, hydroxyl amino, alkanoyloxy of 1 to 2 carbon atoms, di(alkyl of 1 to 2 carbon atoms)-amino-(alkoxy of 1 to 4 carbon atoms) or acetamido; andR.sub.5 is hydrogen, amino, alkoxy of 1 to 4 carbon atoms, halogen or NHCOCOOR.sub.1 ;and, when R.sub.1 is hydrogen, nontoxic, pharmaceutically acceptable salts thereof. The compounds as well as their salts are useful for the treatment of immunological, inflammatory and allergic disorders such as asthma, rhinitis, conjunctivitis, hay fever, urticaria, food allergies and the like.

Abstract: Compounds of the formula ##STR1## R.sub.1 is hydrogen or alkyl of 1 to 4 carbon atoms; R.sub.2 is hydrogen, methyl, hydroxyl, alkoxy of 1 to 4 carbon atoms, di(alkyl of 1 to 2 carbon atoms)amino-(alkoxy of 1 to 4 carbon atoms) or NHCOCOOR.sub.1 ;R.sub.3 is hydrogen or NHCOCOOR.sub.1 ;A is ##STR2## R.sub.4 is hydrogen, methyl, alkoxy of 1 to 4 carbon atoms, hydroxyl, amino, alkanoyloxy of 1 to 2 carbon atoms, di(alkyl of 1 to 2 carbon atoms)-amino-(alkoxy of 1 to 4 carbon atoms) or acetamido; andR.sub.5 is hydrogen, amino, alkoxy of 1 to 4 carbon atoms, halogen or NHCOCOOR.sub.1 ;and, when R.sub.1 is hydrogen, nontoxic, pharmaceutically acceptable salts thereof. The compounds as well as their salts are useful for the treatment of immunological, inflammatory and allergic disorders such as asthma, rhinitis, conjunctivitis, hay fever, urticaria, food allergies and the like.

Abstract: Compounds of the formula ##STR1## wherein R.sub.1 is hydrogen or alkyl of 1 to 4 carbon atoms;R.sub.2 is hydrogen, methyl, hydroxyl, alkoxy of 1 to 4 carbon atoms, di(alkyl of 1 to 2 carbon atoms)amino-(alkoxy of 1 to 4 carbon atoms) or NHCOCOOR.sub.1 ;R.sub.3 is hydrogen or NHCOCOOR.sub.1 ;A is ##STR2## R.sub.4 is hydrogen, methyl, alkoxy of 1 to 4 carbon atoms, hydroxyl, amino, alkanoyloxy of 1 to 2 carbon atoms, di(alkyl of 1 to 2 carbon atoms)-amino-(alkoxy of 1 to 4 carbon atoms) or acetamido; andR.sub.5 is hydrogen, amino, alkoxy of 1 to 4 carbon atoms, halogen or NHCOCOOR.sub.1 ;and, when R.sub.1 is hydrogen, nontoxic, pharmaceutically acceptable salts thereof. The compounds as well as their salts are useful for the treatment of immunological, inflammatory and allergic disorders such as asthma, rhinitis, conjunctivitis, hay fever, urticaria, food allergies and the like.

Abstract: Compounds of the formula ##STR1## wherein R.sub.1 is hydrogen, halogen or methoxy;R.sub.2 is hydrogen or lower alkyl;R.sub.3 is hydrogen or lower alkyl;R.sub.4 is hydrogen, lower alkyl or alkenyl of 3 carbon atoms; andn is 2 to 6;and non-toxic, pharmacologically acceptable acid addition salts thereof. The compounds as well as their salts are useful as antiallergics and hypotensives.

Abstract: Compounds of the formula ##STR1## wherein R.sub.1 is hydrogen or alkyl of 1 to 4 carbon atoms;R.sub.2 is hydrogen, methyl or carboxyl; andA is pyridyl, benzodioxanyl or ##STR2## where R.sub.3, R.sub.4 and R.sub.5, which may be identical to or different from each other, are each hydrogen, hydroxyl, alkoxy, alkyl, halogen, carboxyalkyl or nitro, or one of R.sub.3, R.sub.4 or R.sub.5 is dialkylamino, carboxamido, morpholino, piperidino, hydroxy-piperidino, cyano or phenyl;non-toxic salts thereof formed with an inorganic base when R.sub.1 is hydrogen and/or R.sub.2 is carboxyl; and non-toxic addition salts thereof formed with an organic base when R.sub.1 is hydrogen. The compounds are useful as antiallergics.