Two new xanthones from Calophyllum nodusum (Guttiferae)

• Main Authors: Mad Nasir, Nadiah, Rahmani, Mawardi, Shaari, Khozirah, Ee, Gwendoline Cheng Lian, Go, Rusea, Kassim, Nur Kartinee, Mohamad, Siti Noor Kamilah, Che Jamil, Mohamad Johadi Iskandar
• Format: Article
• Language: English
• Published: MDPI 2011
• Online Access: http://psasir.upm.edu.my/id/eprint/77961/1/77961.pdf; http://psasir.upm.edu.my/id/eprint/77961/; https://www.mdpi.com/1420-3049/16/11/8973

The air-dried powdered stem bark of Calophyllum nodusum (Guttiferea) collected from Sandakan (Sabah, Malaysia), was extracted sequentially with hexane, chloroform and methanol. The solvents were removed by rotary evaporator to give dark viscous extracts. Detailed and repeated chromatographic separat...