Heterocyclic-substituted tricyclics of the formula ##STR00001## or a pharmaceutically acceptable salt thereof, wherein: the dotted line represents an optional single bond; represents an optional double bond, n is 0-2; Q is cycloalkyl, optionally substituted by R.sup.13 and R.sup.14; R.sup.13 and R.sup.14 are independently selected from (C.sub.1-C.sub.6)alkyl, (C.sub.3-C.sub.8)cycloalkyl, --OH, (C.sub.1-C.sub.6)alkoxy, R.sup.27-aryl(C.sub.1-C.sub.6)alkyl, heteroaryl, heteroarylalkyl, heterocyclyl, heterocyclylalkyl, halogen and haloalkyl; or R.sup.13 and R.sup.14 together form a spirocyclic or a heterospirocyclic ring of 3-6 atoms, Het is a mono- or bi-cyclic optionally substituted heteroaryl group; and B is a bond, alkylene, or optionally substituted alkenylene or alkynylene, wherein the remaining substituents are as defined in the specification, are disclosed, as well as pharmaceutical compositions containing them and a method of treating diseases associated with thrombosis, atherosclerosis, restenosis, hypertension, angina pectoris, arrhythmia, heart failure, and cancer by administering said compounds. Combination therapy with other cardiovascular agents is also claimed.

 
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