Chemical and enzymatic modifications of integric acid and HIV-1 integrase inhibitory activity
摘要:
Integric acid (1), an acyl eremophilane sesquiterpenoid, was identified as an inhibitor of HIV-1 integrase, the enzyme responsible for provirus entry into the host cell nucleus and integration in to the host genome. Chemical and enzymatic modification of integric acid led to the preparation of several selective chemical derivatives of integric acid. Preparation, HIV-1 inhibitory activity, and the structure-activity relationship against coupled and strand transfer assays are described. It appears that most of the groups present in the natural product are required for inhibition of HIV-1 integrase strand transfer activity. In contrast, inhibition of 3' processing activity is less stringent suggesting distinct SAR for the two integrase reactions. (C) 2000 Elsevier Science Ltd. All rights reserved.
Structure and absolute stereochemistry of HIV-1 integrase inhibitor integric acid. A novel eremophilane sesquiterpenoid produced by a Xylaria sp.
作者:Sheo B. Singh、Deborah Zink、Jon Polishook、Delia Valentino、Ali Shafiee、Keith Silverman、Peter Felock、Ana Teran、Dolores Vilella、Daria J. Hazuda、Russell B. Lingham
DOI:10.1016/s0040-4039(99)01878-x
日期:1999.12
natural product libraries we have discovered integric acid, a novel eremophilane sesquiterpenoid, from a Xylaria sp. It inhibited 3′ -end processing, strand transfer and disintegration reactions catalyzed by HIV-1 integrase with IC50 values of 3–10 μM. The isolation, structure elucidation, relative, and absolute stereochemistry of integric acid are described.