| abstract |
A compound which is a carbamate of formula (I), wherein R1 represents (a), (b), (c), (d), (e), (f), (g), (h) or (i); R2 represents a benzyl, phenethyl, furan-2-ylmethyl, furan-3-yimethyl, thiophen-2-ylmethyl or thiophen-3-ylmethyl group or a straight or branched alkyl group having 3 or 8 carbon atoms, an alkenyl group having 3 to 8 carbons atoms, or a cycloalkyl group of 3 to 6 carbon atoms; p is 1 or 2 and the substitution in the azoniabicyclic ring may be in the 2, 3 or 4 position including all possible configurations of the asymmetric carbons; or a pharmaceutically acceptable salt thereof. The pharmaceutically acceptable salt may be of formula (II). (I) (a) (b) (c) (d) (e) (f) (g) (h) or (i) (II) |