A compound having the general formula ##STR1## in which R represents a hydrogen atom or a hydroxyl radical, R.sub.1 represents a hydrogen atom or a methyl radical, and R.sub.2 represents a phenylethyl radical, a C.sub.1 -C.sub.16 alkyl radical, or a C.sub.6 -C.sub.16 monocyclic, polycyclic or alicyclic radical optionally bonded through a methylene radical, and its pharmaceutically acceptable acid addition salts, the formula (I) having the L-configuration when R is OH and when R and R.sub.1 are both hydrogen, and having the DL-configuration when R is hydrogen and R.sub.1 is methyl. These compounds and salts are useful as medicaments in human and veterinary medicine for cardiovascular and/or neurological treatment.
具有一般式##STR1##的化合物,其中R代表氢原子或羟基自由基,R.sub.1代表氢原子或
甲基自由基,R.sub.2代表苯乙基自由基、C.sub.1-C.sub.16烷基自由基或C.sub.6-C.sub.16单环、多环或脂环自由基,可选择通过亚
甲基自由基连接,以及其药学上可接受的酸盐加合物,当R为OH时,式(I)具有L-构型,当R和R.sub.1都是氢时,式(I)具有DL-构型,当R为氢且R.sub.1为甲基时。这些化合物和盐在人类和兽医药物中用于心血管和/或神经系统治疗。