Antiatherosclerotic agents are provided which are represented by Formulas I or II: ##STR1##

wherein

R is ##STR2##

• wherein R₉, R₁₀, R₁₁, R₁₂, R₁₃, and R₁₄ are each, independently, hydrogen or a lower alkyl of 1-6 carbon atoms;
• R₆, and R₇ are each, independently, hydrogen, lower alkyl of 1-6 carbon atoms, or CH₂COOR₈, where R₈ is a lower alkyl of 1-6 carbon atoms; and
• X is O or S;

R₁ is hydrogen or a lower alkyl of 1-6 carbon atoms;

R₂, R₃, and R₄ are each, independently, hydrogen or halogen; and

R₅ is a lower alkyl of 1-6 carbon atoms;

or a pharmaceutically acceptable salt thereof.