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New briaranes from the Taiwanese gorgonian Junceella juncea
Ya-Ching Shen1, Yu-Chi Lin, Chin-Lien Ko
1Institute of Marine Resources, National Sun Yat-sen University, 70 Lien-Hai Road, Kaohsiung, Taiwan, Republic of China. ycshen@mail.nsysu.edu.tw
Journal of Natural Products
|March 1, 2003
Abstract:
In addition to the known junceelolide C (4), three new briaranes, juncenolides B (1), C (2), and D (3), have been isolated from the acetone extract of a red Gorgonian Junceella juncea collected in Taiwan. The structures of 1-3 were elucidated on the basis of FABMS and 2D NMR techniques including COSY, HMQC, HMBC, and NOESY experiments. Among them, compound 2 exhibited mild cytotoxicity against human liver carcinoma (HEPA 59T/VGH) and oral epidermoid (KB) carcinoma cells.