N-(heterocyclic alkyl) pyrido [2, 1-b] quinazoline-8-carboxamides as orally active antiallergy agents

~72%

~89%

~%

~%

~%

~%

~63%

~%

~%

~%

~77%

~72%

~81%

~%

~%

~47%

~%

~%

~%

~%

~%

~%

~%

~%

~83%

~%

~%

~%

~81%

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~%

~%

~%