被撤回的出版物: Purine and pyrimidine derivatives from the South China Sea gorgonian Subergorgia suberosa (Retracted article. See vol. 58, pg. 884, 2010)

Three new purine derivatives, namely, 4-caryboxy-5,6-dihydro-4H,8H-pyrimido[1,2,3-cd]purine-8,10(9H)dione (1), 7,9-dihydro-1-(3-oxobtityl)-1H-purine-6,8-dione (2), and 7-hydro-9-(3-oxobutyl)-1H-purine-6,8-dione (3) together with six known purine and pyrimidine derivatives were isolated from the EtOH/CH2Cl2 extracts of the South China Sea gorgonian Subergorgia suberosa. The structures of 1-3 were determined on the bases of extensive spectroscopic analysis, including 1D and 2D NMR data.