Pyrido[3,2-e]pyrazinones, process of their preparation and use as well as pharmaceutical preparations based thereon

摘要

Pyrido[3,2-e]pyrazinony obecn ho vzorce I, kde A znamen bu CH.sub.2.n., NR.sup.3.n. nebo O, X, Y a Z znamenaj N nebo CR.sup.4.n., p°i em alespo jeden substituent z X, Y a Z mus b²t N a ostatn symboly maj specifick² v²znam, zp soby jejich v²roby a farmaceutick p° pravky na jejich b zi. Pou it t chto pyrido[3,2-e]pyrazinon a/nebo farmaceutick²ch p° pravk pro v²robu l iv s antiastmatick²mi a antialergick²mi · inky./