[(2S,3R,4S,5R)-2-[(2S,3R,4S,5S)-3-acetyloxy-2-[[(3R,8S,9R,10R,13S,14R,16R,17S)-3,17-dihydroxy-10,13-dimethyl-17-[(2S)-6-methyl-3-oxoheptan-2-yl]-1,2,3,4,7,8,9,11,12,14,15,16-dodecahydrocyclopenta[a]phenanthren-16-yl]oxy]-5-hydroxyoxan-4-yl]oxy-4,5-dihydroxyoxan-3-yl] 4-methoxybenzoate
145075-81-6COc1ccc(C(=O)O[C@H]2[C@H](O[C@@H]3[C@@H](OC(C)=O)[C@H](O[C@@H]4C[C@@H]5[C@H]6CC=C7C[C@H](O)CC[C@]7(C)[C@@H]6CC[C@]5(C)[C@@]4(O)[C@H](C)C(=O)CCC(C)C)OC[C@@H]3O)OC[C@@H](O)[C@@H]2O)cc1MPXTYZZFIJTPPA-JOQRFCRPSA-N説明OSW-1 is a saponin that has been found in O. saundersiae and has antiviral and anticancer activities. It is an inhibitor of oxysterol-binding protein (OSBP) and its paralog OSBP-related protein 4 (ORP4) with Ki values of 16 and 71 nM, respectively, in radioligand binding assays using HEK293T cell lysates. It induces OSBP translocalization from the cytoplasm to the trans-Golgi network and decreases intracellular levels of OSBP in HEK293 cells. OSW-1 inhibits replication of a variety of enteroviruses (IC50s = 2.4-9.4 nM), including replication of coxsackievirus B3 (CVB3) in infected HeLa R19 cells in an OSBP-dependent manner when used at a concentration of 3 nM. It also inhibits replication of hepatitis C virus (HCV) but not mouse hepatitis virus (MHV), a coronavirus. It protects against CVA9 and echovirus 2 infection in HeLa cells when used at a concentration of 10 nM. OSW-1 inhibits growth of HeLa and HEK293 cells (GI50s = 0.33 and 0.22 nM, respectively).
使用OSW-1 is a unique steroidal saponin displaying selective cytotoxicity against cancer cell lines. From Ornithogalum Saundersiae bulbs.
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145075-81-6