Fungal beauveriolide III (1b), discovered as an inhibitor of lipid droplet accumulation in mouse macrophages and showing antiatherogenic activity in mouse model, consists of l-Phe, l-Ala, d-allo-Ile, and (3S, 4S)-3-hydroxy-4-methyloctanoic acid moieties. A combinatorial library of beauveriolide analogues focusing on l-Ala and d-allo-Ile of 1b was synthesized by combinatorial synthesis. Among them, d-Ala analogues consisting of A{2} improved their solubility, while those with 7{1,3,2},7{2,3,1}, and 7{2,3,2} were 20 times more potent than 1b.
Alanine Amino Acids