Structure–activity relationships of novel anti-malarial agents. Part 2: cinnamic acid derivatives

We have described compound 1 as a lead structure for a novel class of anti-malarial agents. Replacement of the 3-phenylpropionyl moiety of the lead structure 1 by a 4-propoxycinnamic acid residue resulted in a significant improvement in anti-malarial activity. Compound 3q represents an important step in the development of lead structure 1 into an anti-malarial drug candidate.