申请人:OtsukaPharmaceutical Co., Ltd.
公开号:US04256890A1
公开(公告)日:1981-03-17
Novel compounds represented by the formula ##STR1## wherein R.sup.1, R.sup.2, and R' and R" are defined as hereinafter, having a blocking activity on .beta.-adrenergic nerves, novel intermediates useful for synthesis thereof and processes for preparing the same are disclosed. When substitution is at the 5-position and R.sup.1 and R.sup.2 are hydrogen, R' and R" are not simultaneously hydrogen and a 1 to 4 carbon atom alkyl group in the claimed compound.
所表示的新化合物,其分子式为##STR1##,其中R.sup.1、R.sup.2和R'以及R"的定义如下,具有阻断β-肾上腺素神经的活性,新的中间体对合成有所帮助,以及制备这些化合物的过程。当取代位置在5位且R.sup.1和R.sup.2为氢时,所申请的化合物中R'和R"不能同时为氢和1到4个碳原子的烷基团。