申请人:NISSHIN FLOUR MILLING CO., LTD.
公开号:EP0165110A1
公开(公告)日:1985-12-18
Four different optical isomers of a new compound, 1-[2'-(o-methoxyphenoxy)-1'-methylethylamino]-3-(4"- isocarbostyriloxy)-2-propanol are now provided as new substances. These four optical isomers are now nominated as (2R, 1'S)-1-[2'-(o-methoxyphenoxy)-1'-methylethylamino]-3-(4"-isocarbostyriloxy)-2-propanol, (2S, 1'S)-1-[2'-(o-meth- oxyphenoxy)-1'-methylethylamino]-3-(4"-isocarbostyriloxy)-2-propanol, (2S, 1'R)-1-[2'-(o-methoxyphenoxy)-1'-methyl- ethylaminol-3-(4"-isocarbostyriloxy)-2-propanol, and (2R, 1'R)-1-[2'-(o-methoxyphenoxy)-1'-methylethylamino]-3-(4"- isocarbostyriloxy)-2-propanol, respectively. There four optical isomers have different activities for their β-adrenergic-blocking effect and α-adrenergic-blocking effect and are expectable to be more valuable agent for therapeutic treatment of various cardiovascular diseases, as compared to an optically inactive racemic mixture of said isomer compounds. These four optical isomers may be produced and isolated from each other by chromatographing (1'S)- or (1'R-N-[2'-(o-methoxyphenoxy)-1'-methylethyl]-5-(d'-iso- carbostyriloxymethyl)-2-oxalidones to isolate either its (5R; 1'S)-isomer and its (5S, 1'S)-isomer, or its (55, 1'R)-isomer and its (5R, 1'R)-isomer therefrom separately, and then hydrolysing each of these isolated isomers under alkaline conditions to obtain separately (2R,1'S)-, (2S, 1'S)-, (2S, 1'R)-and (2R, 1'R)-1-(2'-(methoxyphenoxy)-1'-methylethylamino) -3-(4"-isocarbostyriloxy)-2-propanols.
一种新化合物--1-[2'-(邻甲氧基苯氧基)-1'-甲基乙基氨基]-3-(4"-异羧基吡咯烷酮氧基)-2-丙醇的四种不同光学异构体现作为新物质提供。这四种光学异构体现命名为 (2R,1'S)-1-[2'-(邻甲氧基苯氧基)-1'-甲基乙基氨基]-3-(4"-异羰基吡咯烷酮氧基)-2-丙醇、(2S,1'S)-1-[2'-(邻甲氧基苯氧基)-1'-甲基乙基氨基]-3-(4"-异羰基吡咯烷酮氧基)-2-丙醇、(2S,1'R)-1-[2'-(邻甲氧基苯氧基)-1'-甲基乙基氨基]-3-(4"-异羧基吡咯烷酮氧基)-2-丙醇,以及(2R,1'R)-1-[2'-(邻甲氧基苯氧基)-1'-甲基乙基氨基]-3-(4"-异羧基吡咯烷酮氧基)-2-丙醇。这四种光学异构体的β-肾上腺素能阻断作用和α-肾上腺素能阻断作用具有不同的活性,与上述异构体化合物的光学非活性外消旋混合物相比,有望成为治疗各种心血管疾病的更有价值的药物。这四种光学异构体可通过色谱法制备并相互分离出(1'S)-或(1'R-N-[2'-(邻甲氧基苯氧基)-1'-甲基乙基]-5-(d'-异羧基吡咯氧甲基)-2-恶唑烷酮,从而分离出其(5R;1'S)-异构体和它的(5S, 1'S)-异构体,或它的(55, 1'R)-异构体和它的(5R, 1'R)-异构体,然后在碱性条件下水解这些分离出的异构体,分别得到(2R、1'S)-、(2S,1'S)-、(2S,1'R)-和(2R,1'R)-1-(2'-(甲氧基苯氧基)-1'-甲基乙基氨基)-3-(4"-异碳酸基吡咯烷酮氧基)-2-丙醇。