New compounds of the following general formula: ##STR1## wherein R.sub.1 is acyl, alkyl, cycloalkyl, carboxyalkyl or ester thereof, heterocyclic group, saccharide residue or hydrogen atom, R.sub.2 stands for hydrogen atom or a lower alkyl and R.sub.3 represents hydrogen atom or a nitrogen-containing group, are provided, among these, some of the compounds to be isolated and purified from a plant belonging to Genus Rubia, other compounds being prepared by chemically modifying the isolated compounds with various kind of substituents and these new compounds having therapeutic effect, in particular such as antineoplastic, emetic, anorexigenic, psychotropic, vasoconstrictive, papaverinic, antiperkinsonian and/or antidiuretic effect.
提供以下通式的新化合物:## STR1 ##其中R.sub.1是酰基,烷基,环烷基,羧基烷基或其酯,杂环基,糖残基或氢原子,R.sub.2代表氢原子或较低的烷基,R.sub.3代表氢原子或含氮基团。其中一些化合物从
茜草属植物中分离和纯化,其他化合物通过用各种取代基进行
化学修饰而制备,这些新化合物具有治疗作用,特别是如抗肿瘤,催吐,厌食,精神活性,血管收缩,
罂粟碱,抗帕
金森病和/或抗利尿作用。