申请人:Eisai Co., Ltd.
公开号:US20020128480A1
公开(公告)日:2002-09-12
The present invention creates a novel antiangiogenic agent and provides an antitumor agent which shows high safety as compared with conventional antitumor agents, has a sure effect and is able to be administered for a long period. That is, it provides an indole compound represented by the following formula (I), its pharmacologically acceptable salt or hydrates thereof.
1
In the formula, R
1
represents hydrogen atom, a halogen atom or cyano group; R
2
and R
3
are the same as or different from and each represents hydrogen atom, a C
1
-C
4
lower alkyl group or a halogen atom; R
4
represents hydrogen atom or a C
1
-C
4
lower alkyl group; and the ring A represents cyanophenyl group, aminosulfonylphenyl group, aminopyridyl group, aminopyrimidyl group, a halopyridyl group or cyanothiophenyl group, provided that the case where all of R
1
, R
2
and R
3
are hydrogen atoms, where both R
2
and R
3
are hydrogen atoms or where the ring A is aminosulfonyl group and both R
1
and R
2
are halogen atoms is excluded. Further, when the ring A is cyanophenyl group, 2-amino-5-pyridyl group or a 2-halo-5-pyridyl group and R
1
is cyano group or a halogen atom, at least one of R
2
and R
3
should not be a hydrogen atom.
本发明创造了一种新型抗血管生成剂,并提供了一种与传统抗肿瘤剂相比具有较高安全性、确切疗效且能长期使用的抗肿瘤剂。也就是说,它提供了以下式(I)所代表的吲哚化合物,其药理学上可接受的盐或水合物。在该式中,R1代表氢原子、卤原子或氰基;R2和R3相同或不同,每个代表氢原子、C1-C4低碳基或卤原子;R4代表氢原子或C1-C4低碳基;环A代表氰基苯基、氨基磺酰基苯基、氨基吡啶基、氨基嘧啶基、卤代吡啶基或氰硫基苯基,但排除R1、R2和R3全为氢原子、R2和R3均为氢原子或环A为氨基磺酰基且R1和R2均为卤原子的情况。此外,当环A为氰基苯基、2-氨基-5-吡啶基或2-卤代-5-吡啶基且R1为氰基或卤原子时,至少R2和R3中的一个不应为氢原子。