Cerebral function enhancing pyrimidinyl derivatives
申请人:Bristol-Myers Squibb Company
公开号:US05098904A1
公开(公告)日:1992-03-24
A series of pyprimidinyl compounds of formulae I, II and III; ##STR1## wherein R.sup.1 and R.sup.2 are independently selected from hydrogen and hydroxy; R.sup.3 is selected from hydrogen, hydroxy, or oxo, with the proviso that R.sup.3 can only be oxo when R.sup.1 and R.sup.2 are hydrogen, and further that R.sup.1, R.sup.2, and R.sup.3 cannot all be hydrogen or hydroxy at the same time; and the solid and dotted lines refer to either a double covalent bond or a single covalent bond with another hydrogen atom covalently bonded to the carbon terminus end. The compounds of this invention possess cognition and memory enhancing activity.