Journal
JOURNAL OF ORGANIC CHEMISTRY
Volume 72, Issue 14, Pages 5291-5296Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jo070639m
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Phosphatidylinositol mannosides (PIMs) isolated from mycobacteria have been identified as an important class of glycolipids with significant immune modulating properties. We present here the syntheses of phosphatidylinositol dimannoside ether analogues 2 and 3 and evaluate their interleukin-12 (IL-12)-inducing properties along with dipalmitoyl PIM2 (1) in an in vitro bovine dendritic cell assay. Both synthetic PIM analogues and synthetic dipalmitoyl PIM2 (1) were effective at enhancing IL-12 production by immature bovine dendritic cells. Unexpectedly, ether analogue 2 was significantly more active than dipalmitoyl PIM2 (1) which indicates that modified PIM compounds can be strongly immunoactive and may have significant adjuvant activities.
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