The invention relates to novel 15-nitro-2β,3β-dihydro- and 15-nitro-2β,3β,6,7-tetrahydrotabersonine derivatives of the formula (I),
wherein
R¹ stands for hydrogen;
R² stands for hydrogen or a C₁₋₆alkyl group; and the symbol
represents a single or double bond as well as their salts.
The invention further relates to pharmaceutical compositions containing the above compounds as well as a process for the preparation of the above compounds of formula (I) and of the pharmaceutical compositions.
The compounds of formula (I) exert a reducing or inhibitory effect on cerebral edema and show antihypoxic properties. Thus, they are useful for the prevention or treatment of brain injuries of various origin induced by hypoxia of the brain.
本发明涉及式 (I) 的新型 15-硝基-2β,3β-二氢-和 15-硝基-2β,3β,6,7-四氢他贝生碱衍
生物、
其中
R¹ 代表氢;
R² 代表氢或 C₁₋₆ 烷基;符号
代表单键或双键以及它们的盐类。
本发明还涉及含有上述化合物的药物组合物以及上述式 (I) 化合物和药物组合物的制备工艺。
式(I)化合物对脑
水肿有减轻或抑制作用,并具有抗缺氧特性。因此,它们可用于预防或治疗由脑缺氧引起的各种脑损伤。