Two unusual 18,19-secoursane glycosides, bodiniosides A (1) and B (2), and two known triterpenoids, hypadienic acid (3) and 2,3,19-trihydroxyurs-12-en-28-oic acid (4), were isolated from the whole plants of Elsholtzia bodinieri. The structures of 1 and 2 were determined by intensive interpretation of spectral data. This is the first report of E-secoursane glycosides. In addition, the biogenetic relationships among these four triterpenoids are discussed.
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Li et al. (2005) studied this question.
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