Abstract: The invention relates to the use of ketenethioacetals of the formula ##STR1## in which R.sub.1 represents aryl or heteroaryl, R.sub.2 represents hydrogen, an optionally substituted hydrocarbon radical, heteroaryl, an acyl radical, a group of the formula --S(O).sub.m --R.sub.a, wherein m is 0, 1 or 2 and R.sub.a is an optionally substituted hydrocarbon radical; or optionally functionally modified sulpho, A represents an optionally substituted bivalent aliphatic hydrocarbon radical and n is 0 or 1, and pharmaceutically acceptable salts of such compounds that contains a salt-forming group, for the treatment of liver diseases, respiratory tract diseases and vascular diseases pharmaceutical preparations containing compounds of the formula I and novel compounds of the formula I. The compounds have liver-protecting and immunomodulating properties.

Abstract: Compounds of the formula I ##STR1## wherein the groups A, R.sub.1, R.sub.2 and R.sub.3 are as defined in the specification, exhibit valuable pharmacological properties, especially as antifibrotic agents. They are prepared by methods known per se.

Abstract: Pharmaceutical preparations containing (+)-cyanidan-3-ol derivatives of the formula I ##STR1## wherein R' and R" are hydrogen, an unsubstituted or substituted hydrocarbon radical, or heterocyclic radical, halogen, formyl, free or functionally modified carboxyl, free or etherified or esterified hydroxyl, free, etherified or oxidized mercapto, unsubstituted or substituted sulfamoyl, acyl or unsubstituted or substituted amino, where however R' and R" cannot both be hydrogen simultaneously, and R.sub.1, R.sub.2, R.sub.3, R.sub.4 and R.sub.5 are each hydrogen or an unsubstituted or substituted hydrocarbon radical, and R.sub.2 and R.sub.3 together can also be an unsubstituted or substituted methylene group, and R.sub.1 also an acyl group or an amidated carboxyl group; and therapeutically applicable salts of these compounds, as well as new compounds of these preparations.These pharmaceutical preparations are particularly valuable for treating liver and venous diseases.