Abstract: Three new compounds were isolated from the dried bulbs of Allium macrostemon Bunge. Their structures were elucidated from their spectral data as (25R)-26-O-β-D-glucopyranosyl-5α-furostane-3β,12β,22,26-tetraol-3-O-β-D-glucopyranos-yl (1→2) [β-D-glucopyranosyl (1→3)]-β-D-glucopyranosyl (1→4)-β-D-galactopyranoside (1), (25R)-26-O-β-D-glucopyranosyl-5α-furostane-3β,12α,22,26-tetraol-3-O-β-D-glucopyranosyl (1→2) [β-D-glucopyranosyl (1→3)]-β-D-glucopyranosyl (1→4)-β-D-galacto- pyranoside (2) and (25R)-26-O-β-D-glucopyranosyl-5β-furostane-3β,12α,22,26-tetraol-3-O-β-D-glucopyranosyl (1→2)-β-D-galactopyranoside (3), respectively. The inhibition effect of all compounds on CD40 ligand (CD40L) expression on the membrane of activated platelets stimulated by ADP was tested. Compounds 1 and 2 exhibited significant inhibitory activities in a dose dependent manner (P < 0.05), suggesting their potential application as CD40L inhibitors.
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Chen, H.; Ou, W.; Wang, G.; Wang, N.; Zhang, L.; Yao, X. New Steroidal Glycosides Isolated as CD40L Inhibitors of Activated Platelets. Molecules 2010, 15, 4589-4598.
Chen H, Ou W, Wang G, Wang N, Zhang L, Yao X. New Steroidal Glycosides Isolated as CD40L Inhibitors of Activated Platelets. Molecules. 2010; 15(7):4589-4598.
Chen, Haifeng; Ou, Wenchao; Wang, Guanghui; Wang, Naili; Zhang, Linnan; Yao, Xinsheng. 2010. "New Steroidal Glycosides Isolated as CD40L Inhibitors of Activated Platelets." Molecules 15, no. 7: 4589-4598.