Tetrahedron p. 3879 - 3888 (1990)
Update date:2022-08-11
Topics:
Randoux, T.
Braekman, J. C.
Daloze, D.
Pasteels, J. M.
Riccio, R.
The composition of the defence secretions of four species of Chrysolina beetles on feeding on St John's wort (Hypericum perforatum) has been investigated.In contrast with other members of this genus which produce cardiac glycosides these four species contain new polyoxygenated steroid glycosides.The structures of seven of these derivatives (3-9) have been determinated.
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