Iodinated benzoyl acetals and ketals for x-ray imaging

Abstract

Compounds having the structure ##STR1## wherein (Z--COO is the residue of an iodinated aromatic acid; R is alkyl, cycloalkyl, aryl, aralkyl, ##STR2## or alkenyl; R.sup.1 is H, alkyl, cycloalkyl, aryl, aralkyl, or --CH.sub.2 --.sub.m CO.sub.2 R.sup.3 ; R.sup.2 is H, alkyl, cycloalkyl, aryl, aralkyl, --CH.sub.2 --.sub.n CO.sub.2 R.sup.4, or a ##STR3## group, wherein Z, R and R.sup.1 are as defined above; or R.sup.1 and R.sup.2, taken together with the carbon atom to which they are attached represent cycloalkyl; R.sup.3 is H, alkyl, cycloalkyl, aryl or aralkyl; R.sup.4 is H, alkyl, cycloalkyl, aryl or aralkyl; and m, n and p are independently an integer of from 0 to 17; provided that R.sup.1 and R.sup.2 can not both be H; are useful in the preparation of x-ray contrast compositions for medical imaging.

Dependencies are inferred from the claim text.