Natural products and bioprospecting · 2024
Grewiifopenes A-K, bioactive clerodane diterpenoids from Casearia grewiifolia Vent.
СтатьяНазвание и аннотация: Перевод в очереди
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Pailee Phanruethai, Batsomboon Paratchata, Yaosanit Wiriya, Thananthaisong Theerawat, Mahidol Chulabhorn, Ploypradith Poonsakdi, Reuk-Ngam Nanthawan, Khlaychan Panita, Techasakul Supanna, Ruchirawat Somsak, Prachyawarakorn Vilailak
Аннотация
Eleven novel clerodane-type diterpenoids, grewiifopenes A-K (1-4 and 12-18), along with nine known compounds (5-11, 19, and 20) were purified from the dichloromethane extract of the twigs and stems of Casearia grewiifolia Vent. (Salicaceae). Their spectroscopic data, including the NMR, HRESIMS, and electronic circular dichroism calculations were employed to completely characterize and elucidate the chemical structures and absolute configurations. The clerodane diterpenoids possessing a 6-OH group and no substitution at C-7 exhibited greater cytotoxic activity than others, with their IC50 values ranging from 0.3 to 2.9 μM. Isocaseamembrin E (7) exhibited antibacterial activity against Staphylococcus aureus, while isocaseamembrin E (7), corymbulosin X (8), caseargrewiin A (9), kurzipene A (10), and balanspene F (11) exhibited antibacterial activity against Bacillus cereus.