Procedure for the obtaining of methyl ester of acid 13a-ethyl-2,3,5,6,12,13,13a, 13b-octahidro-12-hydroxy-1H-indolo- (3,2,1-de) piridin ( 3,2,1-ij) (1,5) naftiridin-12-oico and intermediate products. (Machine-translation by Google Translate, not legally binding)

摘要

Procedure for obtaining the methyl ester of 13-ethyl-2,3,5,6,12,13,13a, 13b-octahydro-12-hydroxy-1H-indole- (3,2,1-de) pyridine) 3,2,1-ij) (1,5) naphthyridin-12-oico, characterized in that the plant organs of the plantºcrioceras longiflorusº are subjected to extraction, by contacting said organs, after grinding and alkalization, with at least one organic extraction solvent usual for alkaloids. (Machine-translation by Google Translate, not legally binding)