Unambiguous synthesis of 1-(7-indenyloxy)-3-isopropylamino-2-propanol hydrochloride and its 4-indenyloxy isomer, potent .BETA.-adrenergic blocking agents.
作者:KIYOSHI MURASE、KAZUHARU TAMAZAWA、TOSHIYASU MASE、SHIRO TACHIKAWA、YUICHI SHIOBARA、KOZO TAKAHASHI、MASUO MURAKAMI
DOI:10.1248/cpb.24.552
日期:——
1-(7-Indenyloxy)-3-isopropylamino-2-propanol hydrochloride (Ia) and its 4-indenyloxy isomer (IIa) were synthesized through the sequence of reactions in which possible isomerization of the indene nucleus was prevented by avoiding alkaline conditions. By referring to these standards, the preparation (YB-2) synthesized by the previously described method was found to be a 2 : 1 mixture of Ia and IIa. tert-Butyl analogue of Ia and IIa (Ib, IIb) was also prepared similarly. Biological activities of Ia, IIa were compared with those of YB-2.
1-(7-茚基氧基)-3-异丙基氨基-2-丙醇盐酸盐(Ia)及其4-茚基氧基异构体(IIa)通过一系列反应合成,其中通过避免碱性条件来防止茚核的可能异构化。参考这些标准,之前描述的方法合成的制剂(YB-2)被发现是Ia和IIa的2:1混合物。Ia和IIa的叔丁基类似物(Ib,IIb)也以类似方式制备。Ia和IIa的生物活性与YB-2的活性进行了比较。