Citation: Shu Jun ZHANG, Jin Lan WANG, Qi Gang DENG, Masayoshi ANDO. New Triterpenes from Siyekucai (Ixeris chinensis)[J]. Chinese Chemical Letters, ;2006, 17(2): 195-197. shu

New Triterpenes from Siyekucai (Ixeris chinensis)

1.
Department of Chemistry and Engineering Qiqihar University, Qiqihar 161006;
2.
Niigata University, Ikarashi 2-8050, Niigata 950-2181, Japan

Received Date: 11 April 2005

Fund Project: This work was supported by the grant in the aid for Scientific Research from the Ministry of Education of Heilongjiang Province (No. 1053H Z001).

Three new triterpenes, 3β, 21α-dihydroxylupen-18(19)-en (1), 3β, 25-dihydroxytirucalla7, 23(24)-dien (2), and 21α-hydroxy-19α-hydrogentaraxasterol-20(30)-en (3) were obtained from an ethyl acetate extract of the whole plant of Siyekucai (Ixeris chinensis). The structures of 1-3 were determined by spectroscopic methods (EIMS, IR, 1D and 2D NMR).
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