Non-symmetrical bis-heteroarylmethoxyphenylalkyl carboxylates as

Abstract

Compounds having the formula ##STR1## wherein W and Y are independently selected from optionally substituted quinolyl, optionally substituted benzothiazolyl, optionally substituted benzoxazolyl, optionally substituted benzimidazolyl, optionally substituted quinoxalyl, and optionally substituted naphthyl with the proviso that W and Y are not simultaneously the same substituent; R.sup.1 and R.sup.2 are independently hydrogen, alkyl, haloalkyl, alkoxy, or halogen; R.sup.3 is hydrogen or alkyl; X is absent or is alkylene, alkenylene, or alkynylene; and M is selected from (a) a pharmaceutically acceptable metabolically cleavable group, (b) --OR.sup.4 wherein R.sup.4 is hydrogen or alkyl; and (c) --NR.sup.5 R.sup.6 wherein R.sup.5 and R.sup.6 are independently selected from hydrogen, alkyl, hydroxy and alkoxy are disclosed. These compounds inhibit leukotriene biosynthesis and are useful in the treatment of allergic and inflammatory disease states.