Anti-HIV and cytotoxic biphenyls, benzophenones and xanthones from stems, leaves and twigs of Garcinia speciosa

作者：Pailee Phanruethai; Kuhakarn Chutima; Sangsuwan Chanyapat; Hongthong Sakchai; Piyachaturawat Pawinee; Suksen Kanoknetr; Jariyawat Surawat; Akkarawongsapat Radeekorn; Limthongkul Jitra; Napaswad Chanita; Kongsaeree Palangpon; Prabpai Samran; Jaipetch Thaworn; Pohmakotr Manat; Tuchinda Patoomratana; Reutrakul Vichai^*

来源：Phytochemistry, 2018, 147: 68-79.

DOI：10.1016/j.phytochem.2017.12.013

• Garcinia speciosa
• Clusiaceae
• Benzophenones
• Biphenyls
• Xanthones
• Anti-HIV
• Cytotoxicity

Eleven previously undescribed compounds, including four benzophenones (garciosones A-D), four xanthones (garciosones E-H) and three biphenyls (garciosines A-C), along with eighteen known compounds were isolated from the stems, leaves and twigs of Garcinia speciosa Wall. (Clusiaceae). Their structures were established by extensive spectroscopic analysis. For garciosines A-C, the structures were confirmed by single crystal X-ray diffraction analysis. Most of the isolated compounds were evaluated for their cytotoxic activity and anti-HIV-1 activity using the syncytium inhibition assay and HIV-1 reverse transcriptase (RT) assay. The known compounds, 4,6,3',4'-tetrahydroxy-2-methoxybenzophenone and macluraxanthone, displayed significant cytotoxic activity with the ED50 in the range of 1.85-11.76 mu M. 1,5-Dihydroxyxanthone exhibited the most potent anti-HIV activity against syncytium formation with EC50 < 17.13 mu M (SI > 25.28) and 2-(3,3-dimethylallyl)-1,3,7-trihydroxyxanthone was the most active compound in the HIV-1 reverse transcriptase assay with IC50 value of 58.24 mu M. Structure-activity relationship of some isolated compounds were also discussed.

• 出版日期2018-3