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Quassinoids from the twigs and thorns of Castela polyandra
P A Grieco1, J Haddad, M M Piñeiro-Núñez
1Department of Chemistry and Biochemistry, Montana State University, Bozeman 59717, USA.
Phytochemistry
|February 24, 1999
Abstract:
The structures of six new C20 quassinoids and one new C19 quassinoid, all isolated from the twigs and thorns of Castela polyandra, were established by a combination of spectroscopic and single-crystal X-ray analysis. Five known quassinoids and one known sterol were also identified.