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Cyclic Bis-1,3-dialkylpyridiniums from the Sponge Haliclona sp.
Natural Products Research Institute, College of Pharmacy, Seoul National University, San 56-1, Sillim, Gwanak, Seoul 151-742, Korea
Department of Agricultural Biotechnology, College of Agriculture & Life Science, Seoul National University, San 56-1, Sillim, Gwanak, Seoul 151-921, Korea
Department of Biological Science, College of Life Science and Nano Technology, Hannam University, 461-6 Jeonmin, Yuseong, Daejeon 305-811, Korea
* Authors to whom correspondence should be addressed.
Received: 12 July 2012; in revised form: 9 August 2012 / Accepted: 14 September 2012 / Published: 24 September 2012
Abstract: Eight novel cyclic bis-1,3-dialkylpyridiniums, as well as two known compounds from the cyclostellettamine class, were isolated from the sponge Haliclona sp. from Korea. Structures of these novel compounds were determined using combined NMR and FAB-MS/MS analyses. Several of these compounds exhibited moderate cytotoxic and antibacterial activities against A549 cell-line and Gram-positive strains, respectively. The structure-activity relationships of cyclostellettamines are discussed based on their bioactivities.
Keywords: Haliclona sp.; bis-1,3-dialkylpyridiniums; cyclostellettamines; cytotoxicity; antimicrobial activity
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MDPI and ACS Style
Lee, Y.; Jang, K.H.; Jeon, J.-E.; Yang, W.-Y.; Sim, C.J.; Oh, K.-B.; Shin, J. Cyclic Bis-1,3-dialkylpyridiniums from the Sponge Haliclona sp.. Mar. Drugs 2012, 10, 2126-2137.
Lee Y, Jang KH, Jeon J-E, Yang W-Y, Sim CJ, Oh K-B, Shin J. Cyclic Bis-1,3-dialkylpyridiniums from the Sponge Haliclona sp.. Marine Drugs. 2012; 10(9):2126-2137.
Lee, Yoonyeong; Jang, Kyoung Hwa; Jeon, Ju-eun; Yang, Woo-Young; Sim, Chung J.; Oh, Ki-Bong; Shin, Jongheon. 2012. "Cyclic Bis-1,3-dialkylpyridiniums from the Sponge Haliclona sp.." Mar. Drugs 10, no. 9: 2126-2137.