Cyclic guanidines as dual 5-HT5A/5-HT7 receptor ligands: Structure–activity relationship elucidation
摘要:
The optimisation of affinity and selectivity in a novel series of dual 5-HT5A/5-HT7 receptor ligands is described. Brain penetrant 2-aminodihydroquinazolines with low nanomolar affinities were identified. (C) 2007 Elsevier Ltd. All rights reserved.
The present invention relates to compounds of formula I
wherein
R
1
, R
2
, R
3
are as described in the specification and pharmaceutically acceptable acid addition salts and tautomers thereof.
Compounds of formula I have good activity on the 5-HT
5A
receptor. Therefore, the invention provides a method for treating diseases related to this receptor, for example, anxiety, depression, sleep disorders and schizophrenia.