Carboxyalkylethers, formulations, and treatment of vascular diseases

A compound of the formula ##STR13## wherein n and m independently are integers from 4 to 5;

• R.sub.1, R.sub.2, R.sub.3, and R.sub.4 independently are C.sub.1 -C.sub.6 alkyl, C.sub.2 -C.sub.6 alkenyl, C.sub.2 -C.sub.6 alkynyl, and R.sub.1 and R.sub.2 together with the carbon to which they are attached, and R.sub.3 and R.sub.4 together with the carbon to which they are attached, independently can complete a carbocyclic ring having from 3 to 6 carbons;
• Y.sub.1 and Y.sub.2 independently are COOH, CHO, tetrazole, and COOR.sub.5 where R.sub.5 is C.sub.1 -C.sub.6 alkyl, C.sub.2 -C.sub.6 alkenyl, C.sub.2 -C.sub.6 alkynyl;
• and where the alkyl, alkenyl, and alkynyl groups may be substituted with one or two groups selected from halo, hydroxy, C.sub.1 -C.sub.6 alkoxy, and phenyl, and the pharmaceutically acceptable salts thereof.