Bioassay-Guided Isolation and Structural Modification of the Anti-TB Resorcinols from Ardisia gigantifolia

Yifu GUAN, Xun Song, Ming Hua Qiu, Shi Hong Luo, Bao Jie Wang, Nguyen Van Hung, Nguyen M. Cuong, Djaja Doel Soejarto, Harry H.S. Fong, Scott G. Franzblau, Sheng Hong Li, Zhen Dan He*, Hongjie ZHANG

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

Tuberculosis (TB) is a highly contagious disease mainly caused by Mycobacterium tuberculosis H37RV. Antitubercular (anti-TB) bioassay-guided isolation of the CHCl3 extract of the leaves and stems of the medicinal plant Ardisia gigantifolia led to the isolation of two anti-TB 5-alkylresorcinols, 5-(8Z-heptadecenyl) resorcinol (1) and 5-(8Z-pentadecenyl) resorcinol (2). We further synthesized 15 derivatives based on these two natural products. These compounds (natural and synthetic) were evaluated for their anti-TB activity against Mycobacterium tuberculosis H37RV. Resorcinols 1 and 2 exhibited anti-TB activity with MIC values at 34.4 and 79.2 μm in MABA assay, respectively, and 91.7 and 168.3 μm in LORA assay, respectively. Among these derivatives, compound 8 was found to show improved anti-TB activity than its synthetic precursor (2) with MIC values at 42.0 μm in MABA assay and 100.2 μm in LORA assay. The active compounds should be regarded as new hits for further study as a novel class of anti-TB agents. The distinct structure–activity correlations of the parent compound were elucidated based on these derivatives.

Original languageEnglish
Pages (from-to)293-301
Number of pages9
JournalChemical Biology and Drug Design
DOIs
Publication statusPublished - 1 Aug 2016

Scopus Subject Areas

  • Biochemistry
  • Molecular Medicine
  • Pharmacology
  • Drug Discovery
  • Organic Chemistry

User-Defined Keywords

  • anti-TB activity
  • Ardisia gigantifolia
  • isolation and structure identification
  • Mycobacterium tuberculosis HR
  • resorcinols
  • structural modification

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