申请人:Shangahi Institute of Materia Medica Chinese Academy of Sciences
公开号:US05929084A1
公开(公告)日:1999-07-27
The present invention relates to novel huperzine A derivatives of formula (II), wherein Y is ##STR1## or R" and Y together form .dbd.CH; R is (C.sub.1 -C.sub.5) alkyl, ##STR2## wherein n is 0 or 1, X is H, (C.sub.1 -C.sub.5) alkyl; (C.sub.1 -C.sub.5) alkyloxy; nitro, halogen, carboxy, alkyloxycarbonyl, hydroxymethyl, hydroxy, amino substituted by bis-(C.sub.1 -C.sub.5) alkyl; --(CH.sub.2).sub.m COOZ, wherein m=0-5, Z is H or (C.sub.1 -C.sub.5) alkyl; --CH.dbd.CH--G, wherein G is phenyl, furanyl, carboxy, alkyloxycarbonyl; and dihydro- or tetrahydro-pyridyl substituted by (C.sub.1 -C.sub.5) alkyl at the nitrogen atom; R' is H, (C.sub.1 -C.sub.5) alkyl, pyridoyl, benzoyl substituted by (C.sub.1 -C.sub.5) alkyloxy; R" is H or (C.sub.1 -C.sub.5) alkyl; processes for their use as acetylcholinesterase inhibitor. ##STR3##
本发明涉及公式(II)的新型虎杖碱A衍生物,其中Y是##STR1##或R",Y和R"一起形成.dbd.CH; R是(C.sub.1-C.sub.5)烷基,##STR2##其中n为0或1,X是H,(C.sub.1-C.sub.5)烷基;(C.sub.1-C.sub.5)烷氧基;硝基,卤素,羧基,烷氧羰基,羟甲基,羟基,氨基,经双(C.sub.1-C.sub.5)烷基取代的; --(CH.sub.2).sub.m COOZ,其中m = 0-5,Z是H或(C.sub.1-C.sub.5)烷基; --CH.dbd.CH--G,其中G是苯基,呋喃基,羧基,烷氧羰基;以及经(C.sub.1-C.sub.5)烷基取代的二氢或四氢吡啶基在氮原子处; R'是H,(C.sub.1-C.sub.5)烷基,吡啶酰基,经(C.sub.1-C.sub.5)烷氧基取代的苯甲酰基; R"是H或(C.sub.1-C.sub.5)烷基; 以及它们作为乙酰胆碱酯酶抑制剂的使用方法。##STR3##