Two major saponins from seeds of Barringtonia asiatica: putative antifeedants toward Epilachna sp. larvae.

@article{Herlt2002TwoMS,
  title={Two major saponins from seeds of Barringtonia asiatica: putative antifeedants toward Epilachna sp. larvae.},
  author={Anthony J. Herlt and Lewis N. Mander and Emma Pongoh and Rymond J. Rumampuk and Ponis Tarigan},
  journal={Journal of natural products},
  year={2002},
  volume={65 2},
  pages={115-20}
}
Two major saponins have been isolated from a methanol extract of the seeds of Barringtonia asiatica, and their structures elucidated (mainly by two-dimensional NMR spectroscopy) as 3-O-[[beta-D-galactopyranosyl(1-->3)-beta-D-glucopyranosyl(1-->2)]-beta-D-glucuronopyranosyloxy]-22-O-(2-methylbutyroyloxy)-15,16,28-trihydroxy-(3beta,15alpha,16alpha,22alpha)-olean-12-ene (3) and 3-O-[[beta-D-galactopyranosyl(1-->3)-beta-D-glucopyranosyl(1-->2)]-beta-D-glucuronopyranosyloxy]-22-O-[2(E)-methyl-2… CONTINUE READING

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