Cryptocaryols A鈥揌, 伪-Pyrone-Containing 1,3-Polyols from Cryptocarya sp. Implicated in Stabilizing the Tumor Suppressor Pdcd4
详细信息 查看全文
- 作者：Tanja Grkovic ; Johanna S. Blees ; Nancy H. Colburn ; Tobias Schmid ; Cheryl L. Thomas ; Curtis J. Henrich ; James B. McMahon ; Kirk R. Gustafson
- 刊名：Journal of Natural Products
- 出版年：2011
- 出版时间：May 27, 2011
- 年：2011
- 卷：74
- 期：5
- 页码：1015-1020
- 全文大小：765K
- 年卷期：v.74,no.5(May 27, 2011)
- ISSN：1520-6025
文摘
A high-throughput cell-based reporter assay designed to identify small-molecule stabilizers of the tumor suppressor Pdcd4 was used to screen extracts in the NCI Natural Products Repository. Bioassay-guided fractionation of an extract from a Papua New Guinea collection of the tropical tree Cryptocarya sp. provided a series of new 5,6-dihydro-伪-pyrone-containing 1,3-polyols (1鈥?b>8), named cryptocaryols A鈥揌. Their structures were assigned from a combination of NMR, MS, and CD studies in conjunction with NMR database comparisons. Compounds 1鈥?b>8 were found to rescue Pdcd4 from TPA-induced degradation with EC50 concentrations that ranged from 1.3 to 4.9 渭M.