Compounds of formula (I)
##STR1##
are novel P2X.sub.3 and P2X.sub.2 /P2X.sub.3 antagonists which are useful
in treating pain, urinary incontinence and bladder overactivity.
Los compuestos del ## del ## STR1 del fórmula (i) son la novela P2X.sub.3 y los antagonistas de P2X.sub.2 /P2X.sub.3 que son útiles en dolor que trata, incontinence urinario y overactivity de la vejiga.