Phytochemical Constituents of Nelumbo nucifera

  • Kim, Ki-Hyun (Natural Products Laboratory, College of Pharmacy, Sungkyunkwan University) ;
  • Chang, Sang-Wook (Natural Products Laboratory, College of Pharmacy, Sungkyunkwan University) ;
  • Ryu, Shi-Yong (Korea Research Institute of Chemical Technology) ;
  • Choi, Sang-Un (Korea Research Institute of Chemical Technology) ;
  • Lee, Kang-Ro (Natural Products Laboratory, College of Pharmacy, Sungkyunkwan University)
  • Published : 2009.06.30

Abstract

Phytochemical investigation of the MeOH extract of the leaves of Nelumbo nucifera resulted in the isolation of five norsesquiterpenes, four flavonoids, two triterpenes and one alkaloid. Their chemical structures were characterized by spectroscopic methods to be (E)-3-hydroxymegastigm-7-en-9-one (1), (3S,5R,6S,7E)- megastigma-7-ene-3,5,6,9-tetrol (2), dendranthemoside B (3), icariside $B_2$ (4), sedumoside $F_1$ (5), luteolin (6), quercetin 3-0-${\beta}$-D-glucuronide (7), quercetin 3-0-${\beta}$-D-glucoside (8), isorhamnetin 3-0-rutinoside (9), alphitolic acid (10), maslinic acid (11), and N-methylasimilobine (12). Norsesquiterpenoids (1-5) and triterpenes (10-11) were isolated for the first time from this plant. Compounds 6 and 10-12 exhibited considerable cytotoxicity against four human cancer cell lines in vitro using a SRB bioassay.

Keywords

References

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