Ngày tải lên :
07/11/2014, 17:25
... Ngoc-Thao T Nguyen, Gerhard Maas, Udo R Werz, Hung D Pham, Lien-Hoa D Nguyen (2012), Xanthones from the bark of OH Garcinia pedunculata, Phytochemistry Letters, Vol 5(4), pp 766O OMe O OH O OH 98 O O ... thuc 9a OMe 4a 11 95 14 Ph IR: max 12 tetraoxygenated Lien-Hoa xanthones D Nguyen from the (2012), bark of Cytotoxic Garcinia Vừ Tn Hu, Lờ c ng, Phm ỡnh Hựng, Harrison J Leslie, Nguyn Diu Liờn ... 1,7 (2 s) c = 21-26 1,1,2-Trimetyldihydrofuran H = 4,5 - 4,6 (q, J = 7) c = 91 - 92 H = 1,4 - 1,5 (d) c = 14 - 15 2-(1-Hydroxy-1-metyletyl)-2,3-dihydrofuran Hỡnh 3.17 c trng ph NMR ca cỏc nhúm...