4-Alkyl-5,6,-, 6,7-methylenedioxy-2-1[H]-quinazolinones are prepared from 2,3-methylenedioxyacetophenones. The 4-alkyt-5,6-,6,7-methylonodioxy-2-1 [H]-quinazolinones are active as cardiotonic agents.
4-烷基-5,6,-,6,7-亚甲二氧基-2-1[H]-
喹唑啉酮由 2,3-亚甲二氧基
苯乙酮制备而成。 4-烷基-5,6,-,6,7-亚甲二氧基-2-1[H]-
喹唑啉酮具有强心剂的活性。