申请人:Syntex (U.S.A.) Inc.
公开号:US05264437A1
公开(公告)日:1993-11-23
The present invention relates to optionally substituted pyrido[2,3-d]pyrimidine-2,4(1H,3H)-diones or optionally substituted pyrido[2,3-d]pyrimidine-2(1H,3H)-ones, i.e., compounds of Formula I: ##STR1## wherein: Y is --CH.sub.2 -- or --C(O)--; R.sup.1 is hydrogen or --(CH.sub.2).sub.n --R.sup.7, wherein: R.sup.7 is aryl or heteroaryl, and n is 1 or 2, provided that when Y is --C(O)--, R.sup.7 is heteroaryl; and R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 are hydrogen, or one is selected from lower alkyl, halo, carboxy, methoxycarbonyl, carbamoyl, methylcarbamoyl, di-methylcarbamoyl, methylcarbonyl, methylthio, methylsulfinyl, methylsulfonyl, hydroxymethyl, amino, trifluoromethyl, cyano or nitro; or R.sup.2, R.sup.3, R.sup.4 and R.sup.5 are independently selected from hydrogen, lower alkyl, nitro, chloro, fluoro, methoxycarbonyl or methylcarbonyl, provided at least one is hydrogen, and R.sup.6 is hydrogen; or a pharmaceutically acceptable ester, ether or salt thereof.
本发明涉及可选择地取代的吡啶并[2,3-d]嘧啶-2,4(1H,3H)-二酮或可选择地取代的吡啶并[2,3-d]嘧啶-2(1H,3H)-酮,即化合物的化学式I:##STR1## 其中:Y为--CH.sub.2--或--C(O)--;R.sup.1为氢或--(CH.sub.2).sub.n--R.sup.7,其中:R.sup.7为芳基或杂环芳基,n为1或2,但当Y为--C(O)--时,R.sup.7为杂环芳基;而R.sup.2、R.sup.3、R.sup.4、R.sup.5和R.sup.6为氢,或其中一个选自较低的烷基、卤素、羧基、甲氧羰基、氨基甲酰基、二甲基氨基甲酰基、甲基羰基、甲硫基、甲基亚硫基、甲基砜基、羟甲基、氨基、三氟甲基、氰基或硝基;或R.sup.2、R.sup.3、R.sup.4和R.sup.5独立地选自氢、较低的烷基、硝基、氯、氟、甲氧羰基或甲基羰基,但至少有一个为氢,而R.sup.6为氢;或其药学上可接受的酯、醚或盐。