Synthesis of 6′-acylamido-6′-deoxy-α-d-galactoglycerolipids
摘要:
Aminoglycoglycerolipid 1a isolated from an algal extract showed activity against the enzyme Myt1 kinase with an IC50 value of 0.12 mu g/mL. Its analogues, 6'-acylamido-6'-deoxy-alpha-D-galactoglycerolipids (2a-g) were synthesized in an efficient way with high stereoselectivity. The key step was to employ a 4-OAc protecting group of the galactosyl donor 14 as a remote neighboring participation group to give the glycoside with high alpha-anomeric selectivity (alpha:beta = 32:1) in the glycosylation. The preliminary bioactivity screening showed that compound 2g exhibited good inhibition against Myt1 kinase. (C) 2013 Elsevier Ltd. All rights reserved.