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A Feeding Stimulant for Manduca sexta from Solanum surattenses |
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| Authors: | M Haribal J A A Renwick A B Attygalle D Kiemle |
| Affiliation: | (1) Boyce Thompson Institute, Tower Road, Ithaca, NY 14853, USA;(2) Present address: Cornell Laboratory of Ornithology, 159 Sapsucker Wood Road, Ithaca, NY 14850, USA;(3) Department of Chemistry and Chemical Biology, Stevens Institute of Technology, Hoboken, NJ 07030, USA;(4) NMR Department, SUNY-ESF, Syracuse, NY 13210, USA |
| Abstract: | The acceptance of Solanum surattenses as a host plant for the larvae of Manduca sexta was explained by the presence of feeding stimulants in foliage. Bioassay-guided fractionation of plant extracts resulted in the isolation of a highly active compound (1), which was identified as a furostan derivative {26-O-β-d-glucopyranosyl-(25R)-furosta-5-ene-3-β-yl-O-α-l-rhamnopyranosyl-(1″-2′)-O-α-l-rhamnopyranosyl-(1′″-3″)-O-β-d-glucopyranoside}. This compound has the same steroidal core substructure as that in a stimulant (indioside D) previously identified from potato foliage. However, the sugar substituents attached to the core are different. |
| Keywords: | Feeding stimulant Manduca sexta Solanum bioassay furostan derivative |
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