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Chemical structure of eckol
IUPAC name
Other names
3D model (JSmol)
Molar mass 372.28 g/mol
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

Eckol is a phlorotannin isolated from brown algae in the family Lessoniaceae such as species in the genus Ecklonia[1] such as E. cava[2] or E. kurome[3] or in the genus Eisenia such as Eisenia bicyclis.[4]

The molecule possesses a dibenzo-p-dioxin skeleton and a phloroglucinol component. The molecule can also be viewed as a phloroglucinol trimer.[5]

It exhibits an anti-plasmin inhibitory effect[3] and a radioprotective effect in mice.[1][6] It also exhibits a cytoprotective effect against oxidative stress in Chinese hamster lung fibroblasts.[2] It also shows antithrombotic and profibrinolytic activities.[4]


  1. ^ a b Moon, Changjong; Kim, Sung-Ho; Kim, Jong-Choon; Hyun, Jin Won; Lee, Nam Ho; Park, Jae Woo; Shin, Taekyun (2008). "Protective effect of phlorotannin components phloroglucinol and eckol on radiation-induced intestinal injury in mice". Phytotherapy Research. 22 (2): 238–42. PMID 17886227. doi:10.1002/ptr.2298. 
  2. ^ a b Kang, Kyoung Ah; Lee, Kyoung Hwa; Chae, Sungwook; Zhang, Rui; Jung, Myung Sun; Lee, Youngki; Kim, So Young; Kim, Hee Sun; Joo, Hong Gu; Park, Jae Woo; Ham, Young Min; Lee, Nam Ho; Hyun, Jin Won (2005). "Eckol isolated from Ecklonia cava attenuates oxidative stress induced cell damage in lung fibroblast cells". FEBS Letters. 579 (28): 6295–304. PMID 16253238. doi:10.1016/j.febslet.2005.10.008. 
  3. ^ a b Fukuyama, Y; Kodama, M; Miura, I; Kinzyo, Z; Kido, M; Mori, H; Nakayama, Y; Takahashi, M (1989). "Structure of an anti-plasmin inhibitor, eckol, isolated from the brown alga Ecklonia kurome Okamura and inhibitory activities of its derivatives on plasma plasmin inhibitors". Chemical & pharmaceutical bulletin. 37 (2): 349–53. PMID 2525966. doi:10.1248/cpb.37.349. 
  4. ^ a b Kim, Tae Hoon; Ku, Sae-Kwang; Bae, Jong-Sup (2012). "Antithrombotic and profibrinolytic activities of eckol and dieckol". Journal of Cellular Biochemistry. 113 (9): 2877–83. PMID 22511271. doi:10.1002/jcb.24163. 
  5. ^ Shibata, Toshiyuki; Fujimoto, Ken; Nagayama, Kohki; Yamaguchi, Kuniko; Nakamura, Takashi (2002). "Inhibitory activity of brown algal phlorotannins against hyaluronidase". International Journal of Food Science and Technology. 37 (6): 703. doi:10.1046/j.1365-2621.2002.00603.x. 
  6. ^ Nakayama, Yasuo; Takahashi, Masayuki; Fukuyama, Yoshiyasu; Kinzyo, Zyunei (1989). "Anti-plasmin inhibitor. Part IV. An anti-plasmin inhibitor, eckol, isolated from the brown alga Ecklonia kurome OKAMURA". Agricultural and Biological Chemistry. 53 (11): 3025. doi:10.1271/bbb1961.53.3025.