Peloruside A is a macrocyclic natural product from a New Zealand marine sponge Mycale hentscheli. It has attracted significant attention in the synthetic chemistry, cellular and structural biology communities due to its complex structure and potent anticancer activity. Several natural congeners have since been isolated and synthetic analogues have been prepared. This review describes in detail the published syntheses of peloruside analogues and discusses the structure-activity relationships available to date.