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Insect antifeedant furanocoumarins from Tetradium daniellii |
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| Authors: | Stevenson Philip C Simmonds Monique S J Yule Marianne A Veitch Nigel C Kite Geoffrey C Irwin Dianne Legg Mike |
| Affiliation: | Royal Botanic Gardens, Richmond, Kew, Surrey TW9 3AB, UK. |
| Abstract: | The dried fruits of Tetradium daniellii yielded a new linear furanocoumarin, 5-(6-hydroxy-3,7-dimethylocta-2,7-dienyloxy)psoralen, together with six other structurally related furanocoumarins. A similar chemical profile was recorded by HPLC analysis of a fragment of T. daniellii fruit obtained from an historic herbarium voucher specimen collected in September 1917 during an expedition to Yunnan province, China. Four of the compounds identified caused a potent feeding deterrent effect towards larvae of Spodoptera littoralis and Heliothis virescens. |
| Keywords: | Tetradium daniellii Rutaceae Furanocoumarins Geranyloxypsoralen Xanthotoxin Bergapten Isopimpinellin Antifeedant Heliothis virescens Spodoptera littoralis |
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