期刊
ORGANIC & BIOMOLECULAR CHEMISTRY
卷 7, 期 7, 页码 1454-1460出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/b817312e
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资金
- Japan Society for the Promotion of Sciences [18580101]
- JSPS [18 . 06430]
Four novel glycosylated derivatives of versipelostatin (1), versipelostatins B-E (2-5), were isolated from the culture broth of Streptomyces versipellis 4083-SVS6. The inhibitory activities of the isolated compounds against the expression of molecular chaperone GRP78 induced by 2-deoxyglucose were evaluated. Of the five versipelostatin family members, 1 and 4 were the more potent with IC50 values of 3.5 and 4.3 mu M. These results suggest that the alpha-L-oleandropyranosyl (1 -> 4)-beta-D-digitoxopyranosyl residue in the sugar moiety may play an important role in down-regulating GRP78 expression induced by 2-deoxyglucose.
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