Substituted cycloalkylamine derivatives and their use as calcium channel antagonists
 A method of treatment of a condition or disease related to the accumulation of calcium in the brain cells of a mammal which comprises administering to a subject in need thereof an effective amount of a compound of formula (I), wherein X is O, S, C.dbd.O or a bond; p and q are independently 0-4; R.sup.1 and R.sup.2 are each independently selected from the group consisting of hydrogen, C.sub.1-6 alkyl, C.sub.3-6 cycloalkyl or C.sub.3-6 cycloalkylC.sub.1-4 alkyl; n is 1, 2, 3 or 4; and Ar is phenyl optionally substituted by 1 to 3 substituents selected from; halo, C.sub.1-4 alkyl, C.sub.1-4 alkoxy, C.sub.1-2 alkylenedioxy, trifluoromethyl, trifluoromethoxy, CN, NO.sub.2, amino, mono- or di- alkylamino and Ph(Alk.sup.1).sub.r Y(Alk.sup.2).sub.s -- where Ph is optionally substituted phenyl, Y is a bond, oxygen or a carbonyl group, Alk.sup.1 and Alk.sup.2 are independently C.sub.1-4 alkyl which may be straight or branched and r and s are independently 0 or 1, provided that the length of (Alk.sup.1).sub.r Y(Alk.sup.2).sub.s does not exceed 5 atoms, and pharmaceutically acceptable salts thereof; in the manufacture of a medicament for the treatment of a disorder wherein a calcium channel antagonist is indicated, e.g. ischaemic stroke. Certain novel compounds within formula (I) are also claimed. 
SmithKline Beecham plc
C A A A C C A C
C07C A61P A61P A61P C07C C07C A61P C07C
inventional inventional inventional inventional inventional inventional inventional additional
Thomas Henry Barry Sidney John David
Brown Orlek Harling