申请人:Eli Lilly and Company
公开号:US06448396B2
公开(公告)日:2002-09-10
The present invention provides a process of preparing a compound of the formula IV
wherein:
R1 and R2 are each individually -(C1-C6)alkyl, -(C1-C6)alkoxy or phenyl,
R3 is H or -(C1-C6)alkyl,
R6 is —NR7R8, morpholin-1-yl, imidazol-1-yl, 4,5-dihydro-1H-imidazol-2-yl, thiomorpholin-1-yl, piperazin-1-yl or piperazin-1-yl substituted with -(C1-C4)alkyl or
and R7 and R8 are each individually hydrogen, -(C1-C6)alkyl, —(CH2)pOH,
—(CH2)p-piperidyl, —(CH2)pS(C1-C6)alkyl, —(CH2)pO(C1-C6)alkyl
where R9 is (C1-C6)alkyl;
P is an integer from 1-3 both inclusive;
q is 0 or 1; and
t is 1 to 6 both inclusive;
or a pharmaceutically acceptable salt, hydrate or optical isomer thereof, which is useful as a neuroprotective agent.
本发明提供了制备式IV的化合物的方法,其中:R1和R2各自独立地为-(C1-C6)烷基,-(C1-C6)烷氧基或苯基,R3为H或-(C1-C6)烷基,R6为—NR7R8,吗啉-1-基,咪唑-1-基,4,5-二氢-1H-咪唑-2-基,硫代吗啉-1-基,哌嗪-1-基或被-(C1-C4)烷基取代的哌嗪-1-基,R7和R8各自独立地为氢,-(C1-C6)烷基,—(CH2)pOH,—(CH2)p-哌嗪基,—(CH2)pS(C1-C6)烷基,—(CH2)pO(C1-C6)烷基,其中R9为(C1-C6)烷基;P为1-3之间的整数,包括1和3;q为0或1;t为1到6之间的整数,包括1和6;或其药学上可接受的盐、水合物或光学异构体,其作为一种神经保护剂具有用途。