| abstract |
Compounds of formula I useful as antagonists of CGRP receptors and useful in the treatment or prevention of diseases involving CGRP receptors such as headaches, particularly migraine and cluster headache: (Wherein the variables R 1A , R 1B , R 2 , R 3 , R 4 , A and Z are as defined herein). The present invention is also directed to pharmaceutical compositions comprising these compounds and the use of these compounds and compositions in the prevention or treatment of diseases involving CGRP receptors. |