| 摘要 |
13a-ethyl-2,3,5,6,13a,13b-hexahydro-1H-indolo (3,2,1-de)pyrido (3,2,1-ij) (1,5) naphthiridin-12-phthalidile carboxylate, having the formula given below, and a procedure for its preparation, are described. <IMAGE> The compound lends itself to the prevention and treatment of cerebrovascular affections and organic and functional syndromes caused by a deterioration of cerebral circulation.
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