Molecules 2011, 16(11), 8973-8980; doi:10.3390/molecules16118973

Two New Xanthones from Calophyllum nodusum (Guttiferae)

1, 1,* email, 1, 1, 2, 1, 1 and 1
Received: 23 September 2011; Accepted: 17 October 2011 / Published: 25 October 2011
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: 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 separation of the extracts lead to isolation of two new xanthones, identified as nodusuxanthone (1a) and trapezifolixanthone A (2). Other common terpenoids such as betulinic acid, lupeol, stigmasterol and friedelin were also isolated from the extracts and identified. The structures of the compounds were established by detailed spectral analysis and comparison with previously reported data.
Keywords: Calophyllum nodusum; nodusuxanthone; trapezifolixanthone A; lupeol; stigmasterol
PDF Full-text Download PDF Full-Text [192 KB, uploaded 18 June 2014 19:41 CEST]

Export to BibTeX |

MDPI and ACS Style

Nasir, N.M.; Rahmani, M.; Shaari, K.; Ee, G.C.L.; Go, R.; Kassim, N.K.; Muhamad, S.N.K.; Iskandar, M.J. Two New Xanthones from Calophyllum nodusum (Guttiferae). Molecules 2011, 16, 8973-8980.

AMA Style

Nasir NM, Rahmani M, Shaari K, Ee GCL, Go R, Kassim NK, Muhamad SNK, Iskandar MJ. Two New Xanthones from Calophyllum nodusum (Guttiferae). Molecules. 2011; 16(11):8973-8980.

Chicago/Turabian Style

Nasir, Nadiah Mad; Rahmani, Mawardi; Shaari, Khozirah; Ee, Gwendoline Cheng Lian; Go, Rusea; Kassim, Nur Kartinee; Muhamad, Siti Noor Kamilah; Iskandar, Mohd Johadi. 2011. "Two New Xanthones from Calophyllum nodusum (Guttiferae)." Molecules 16, no. 11: 8973-8980.

Molecules EISSN 1420-3049 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert