Pyrrolidine derivatives of the formula ##STR1## wherein R.sup.1 is hydrogen or lower alkanoyl, R.sup.2 is hydrogen or lower alkyl and R.sup.3 is hydrogen, lower alkyl or a group of the formula --(CH.sub.2).sub.n --NR.sup.4 R.sup.5, wherein n is a whole number of 2 to 4 and R.sup.4 and R.sup.5 each, independently, are hydrogen or lower alkyl, or R.sup.4 and R.sup.5 taken together with the nitrogen atom are a pyrrolidinyl, piperidinyl, piperazinyl or morpholinyl group which is optionally substituted by one or two lower alkyl groups, enantiomers thereof, and acid addition salts of compounds of formula I and their enantiomers which are basic, are useful in the control or prevention of cerebral insufficiency or in the improvement of intellectual capacity. The compounds of formula I of the invention can be prepared starting from starting materials hereinafter described, and are useful as medicaments, for example, in the form of pharmaceutical preparations.
式I的
吡咯烷衍
生物##STR1##其中R.sup.1为氢或低碳酰基,R.sup.2为氢或低烷基,R.sup.3为氢、低烷基或式--(CH.sub.2).sub.n --NR.sup.4 R.sup.5的基团,其中n为2到4的整数,R.sup.4和R.sup.5各自独立地为氢或低烷基,或R.sup.4和R.sup.5与氮原子结合形成可以选择性地被一个或两个低烷基取代的
吡咯啉基、
哌啶基、
哌嗪基或
吗啡啉基,其对映体和公式I化合物及其对映体的酸加成盐是有用的,可用于控制或预防脑血管不足或改善智力能力。本发明的式I化合物可以从下述起始材料开始制备,并可作为药物,例如,以药物制剂的形式。