| 摘要 |
The invention provides novel halogenated pyrazolo[1,5-a]pyrimidines of formula (I) wherein R, R 1 , X and Y have different meanings, and pharmaceutically acceptable salts thereof. Compounds of formula (I) are useful for treating or preventing anxiety, epilepsy and sleep disorders including insomnia, and for inducing sedation-hypnosis, anesthesia, sleep and muscle relaxation. The invention also provides synthetic procedures for preparing said compounds and certain intermediates, as well as intermediates themselves. |
