Planta Med 2003; 69(12): 1141-1146
DOI: 10.1055/s-2003-818006
Original Paper
Natural Product Chemistry
© Georg Thieme Verlag Stuttgart · New York

Anti-HIV-1 Protostane Triterpenes and Digeranylbenzophenone from Trunk Bark and Stems of Garcinia speciosa

Vatcharin Rukachaisirikul1 , Phanruethai Pailee2 , Assdhawut Hiranrat1 , Patoomratana Tuchinda2 , Chalobon Yoosook3 , Jittra Kasisit3 , Walter C. Taylor4 , Vichai Reutrakul2
  • 1Department of Chemistry, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla,Thailand
  • 2Department of Chemistry, Faculty of Science, Mahidol University, Bangkok, Thailand
  • 3Department of Microbiology, Faculty of Science, Mahidol University, Bangkok, Thailand
  • 4School of Chemistry, The University of Sydney, Australia
Further Information

Publication History

Received: April 22, 2003

Accepted: September 29, 2003

Publication Date:
29 January 2004 (online)

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Abstract

Three new protostanes, garciosaterpenes A (1), B (2) and C (3), together with a new digeranylbenzophenone, garciosaphenone A (4) were isolated from the ethyl acetate fractions obtained from the crude methanol extracts of the trunk bark and stems of Garcinia speciosa. The structures were elucidated by spectroscopic methods and chemical reactions. Compounds 1 and 3 showed significant inhibitory activities (IC50 15.5 and 12.2 μg/mL, respectively) against HIV-1 reverse transcriptase and in the syncytium assay (EC50 5.8 μg/mL with TI 3.4 and 37.0 μg/mL with TI 1.9, respectively). Compound 4 was active in HIV-1 RT assay (IC50 23.9 μg/mL), but toxic in the syncytium assay. This work represents the first report on the anti-HIV-1 activities of the protostane triterpenes.

References

Prof. Vichai Reutrakul

Department of Chemistry

Faculty of Science

Mahidol University

Bangkok 10400

Thailand

Fax: +66-2-6445126

Email: scvrt@mahidol.ac.th