Synthesis of the Optically Active trans-Isomers of Diltiazem and Their Cardiovascular Effects and Ca-Antagonistic Activity.
作者:Takashi TANAKA、Hirozumi INOUE、Tadamasa DATE、Kimio OKAMURA、Keiichi AOE、Mikio TAKEDA、Hiroshi KUGITA、Sakae MURATA、Takashi YAMAGUCHI、Kohei KIKKAWA、Shigeyo NAKAJIMA、Taku NAGAO
DOI:10.1248/cpb.40.1476
日期:——
Optically active trans-isomers of diltiazem were synthesized and their cardiovascular effects were evaluated in anesthetized dogs and in isolated guinea pig hearts.Both (+)-2 (2R, 3S) and (-)-2 (2S, 3R) were much less active than diltiazem (1, 2D, 3S) with short duration of action. No substantial enantiomeric difference in activity was seen between them. Their Ca-antagonistic activities on Ca2+-induced contractions in K+ -depolarized canine basilar arteries were also examined.Absolute stereochemistry of (+)-2 was determined to be 2R, 3S by X-ray crystallographic analysis.
研究人员合成了具有光学活性的地尔硫卓反式异构体,并在麻醉犬和离体豚鼠心脏中评估了它们对心血管的影响。它们之间的对映体活性差异不大。通过 X 射线晶体学分析,确定 (+)-2 的绝对立体化学结构为 2R、3S。