inhibitory activity for cholesteryl ester synthesis similar to that by 2. These results revealed biologically important 3D spaces of the three side chains in inhibitory activity for cholesteryl ester synthesis. In addition, we accomplished the synthesis of a biotin-labeled probe 8 by copper-catalyzed (3+2) cycloaddition of a biotin-containing alkyne 16 and azido-containing beauveriolide analog 15 prepared
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 A2} improved their solubility, while those with 71, 3,2}, 72, 3,1}, and 72, 3,2} were 20 times more potent than 1b. (c) 2008 Elsevier Ltd. All rights reserved.
[EN] BEAUVERIOLIDE HAVING ACAT-2 INHIBITORY ACTIVITY<br/>[FR] BEAUVERIOLIDE À ACTIVITÉ INHIBITRICE DE ACAT-2
Fungal beauveriolide III (BeauIII, 1b), a cyclodepsipeptide inhibitingacyl-CoA:cholesterolacyltransferase (ACAT) and showing antiatherogenic activity in mouse models, consists of l-Phe, l-Ala, d-allo-Ile, and 3-hydroxy-4-methyloctanoic acid (HMA) moieties, but the stereochemistry of the HMA part has not until now been fully defined. To determine it, four HMA stereoisomers were synthesized and labeled