Abstract: Pyrrolidin-2-one derivatives of formula I: ##STR1## wherein X=H, OH, C.sub.2 -C.sub.7 acyloxy, C.sub.1 -C.sub.6 alkoxy, cycloalkoxy or phenoxy, n=0 or 1 and m=2 or 3, have a marked nootropic activity.
Type:
Grant
Filed:
July 29, 1987
Date of Patent:
November 29, 1988
Assignees:
Gibipharma S.p.A., Istituto Biochimico Italiano Giovanni Lorenzini S.p.A.
Abstract: Stable salts of S-adenosyl-L-methionine with water-soluble polyanions, such as polyphosphates, polyvinylsulfonates -sulfates or -phosphates, polyacrylates, polystyrene sulfonates, are described.The salts according to the invention, prepared by precipitation from aqueous solutions of pH not exceeding 3.5, possess peculiar stability, solubility, nonhygroscopicity and are valuable for use as active constituents in pharmaceutical compositions.