Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) TOMINAGA MICHIAKI and OGAWA HIDENORI and YO EIYU and YAMASHITA SYUJI and YABUUCHI YOUICHI and NAKAGAWA KAZUYUKI,Studies on Positive Inotropic Agents. III. Synthesis of 6-(Substituted 1-oxoalkyl)-2 (1H)-quinolinone Derivatives,YAKUGAKU ZASSHI,00316903,The Pharmaceutical Society of Japan,1987,107,6,420-428,https://cir.nii.ac.jp/crid/1390282681131922944,https://doi.org/10.1248/yakushi1947.107.6_420