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Abstract
A new pyrimidinedione derivative, 9-acetyl-1,3,7-trimethyl-pyrimidinedione (1), was isolated from the gorgonian coral Verrucella umbraculum, together with two known compounds, caffeine (2) and 1,3-dimethylpyrimidine-2,4(1H,3H)-dione (3). The structure of 1 was elucidated by the aid of 1D, 2D NMR and MS experiments. The structures of the known compounds were identified by comparison of their spectroscopic data with those reported in the literature.
Acknowledgements
This study was supported by grants from National Natural Science Foundation of China (Nos. 40706046, 30973679 and 31100260), Knowledge Innovation Program of Chinese Academy of Sciences (SQ200904, KSCX2-YW-G-073 and KSCX2-EW-J-28) and South China Botanical Garden (No. 201037). This paper is dedicated to Prof. Dr Atta-ur-Rahman on the occasion of his 70th birthday.