| abstract |
(57) [Summary] [Structure] General formula [Chemical formula 10] [R 1, R 4: H , -P (O) (OR 6) 2 group (R 6: H, phenyl group, benzyl group), a protective group for hydroxyl group. R 2 , R 3 : R 7 CH (OR 8 ) CαβCO group (R 7 : C 7-17 alkyl, R 8 : C 10-20 aliphatic acyl group, α, β: H, halogen), and a C 10-20 aliphatic acyl group. R 5 : H, a protective group for hydroxyl group. ] The compound which has. [Effect] The compound of the present invention has an excellent protective effect against bacterial infection, It has an immunoadjuvant activity, a tumor necrosis effect, a macrophage activating effect, and has no toxicity, and is therefore useful as an immunostimulant. |