A new xanthone from Garcinia nitida

• Main Authors: Ee, Gwendoline Cheng Lian, Foo, C. H., Jong, Vivien Yi Mian, Ismail, Nor Hadiani, Md. Sukari, Mohd Aspollah, Yap, Taufiq Yun Hin, Awang, Khalijah
• Format: Article
• Language: English
• Published: Taylor & Francis 2012
• Online Access: http://psasir.upm.edu.my/id/eprint/24936/1/A%20new%20xanthone%20from%20Garcinia%20nitida.pdf; http://psasir.upm.edu.my/id/eprint/24936/; http://www.tandfonline.com/doi/abs/10.1080/14786419.2011.559640
• Institution: Universiti Putra Malaysia

A detailed chemical study on the stem bark of Garcinia nitida has led to the isolation of five xanthones. They are 1,6-dihydroxy-5-methoxy-6, 6-dimethylpyrano[2',3':2,3]-xanthone (1), inophyllin B (2), osajaxanthone (3), 3-isomangostin (4) and rubraxanthone (5). The structures of these compounds were established using mainly 1-D and 2-D NMR spectroscopy (1H, 13C, DEPT, COSY, HMBC and HMQC) while molecular masses were determined via MS techniques; 1 is a new compound.