Synthesis and Analysis of Positive Inotropic Effects of 3-Substituted-2H-cyclohepta(b)furan-2-one Derivatives.
作者:Masayuki YOKOTA、Takashi YANAGISAWA、Kazuhiro KOSAKAI、Shuichi WAKABAYASHI、Tsuyoshi TOMIYAMA、Masafumi YASUNAMI
DOI:10.1248/cpb.42.865
日期:——
Several 3-substituted-2H-cyclohepta[b]furan-2-one derivatives were prepared and tested in vitro for positive inotropic character. Introduction of an isopropyl group at the 5-position of compound 8a caused an increase of PIC50 (negative logarithm of the dosage which increases the contractile force by 50%) from 4.48 to 5.10. Among the 5-isopropyl-8-alkoxy compounds, the isopropoxy compound 12f had the most potent activity with a PIC50 value of 5.99. Conversion of the ester group at the 3-position to a methylene group and of the alkoxy group at the 8-position to a substituted amino group caused a decrease in activity. The most active compound, 12f, was also found to have a weaker heart rate (HR)-increasing effect compared to milrinone and amrinone.
合成了几种3-取代的-2H-环庚[b]呋喃-2-酮衍生物,并在体外测试了它们的正性肌力特性。在化合物8a的5-位引入异丙基,使得PIC50值(增加收缩力50%的剂量的负对数)从4.48增加到5.10。在5-异丙基-8-烷氧基化合物中,异丙氧基化合物12f具有最强的活性,PIC50值为5.99。将3-位的酯基转换为亚甲基,将8-位的烷氧基转换为取代氨基,会导致活性降低。最活跃的化合物12f,与米力农和氨力农相比,对心率(HR)增加的影响较弱。