Phytochemistry 1999-Feb
Quassinoids from the twigs and thorns of Castela polyandra.
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Keywords
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.