The present invention provides compounds of formula (I) wherein e,
R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.4, R.sup.5, R.sup.6,
R.sup.7, R.sup.7a, R.sup.7b, A, D, m and n are as defined in the
specification, processes for their preparation, pharmaceutical
compositions containing them and their use in therapy. ##STR00001##