TY - JOUR
T1 - Two major saponins from seeds of Barringtonia asiatica
T2 - Putative antifeedants toward Epilachna sp. larvae
AU - Herlt, Anthony J.
AU - Mander, Lewis N.
AU - Pongoh, Emma
AU - Rumampuk, Rymond J.
AU - Tarigan, Ponis
PY - 2002
Y1 - 2002
N2 - 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-{[β-D-galacto-pyranosyl(1→3)-β-D-glucopyranosyl (1→2)]-β-D-glueuronopyranosyloxy}-22-O-(2-methylbutyroyloxy) -15,16,28-trihydroxy-(3β,15α,16α,22α) -olean-12-ene (3) and 3-O-{[β-D-galactopyranosyl(1→3)-β-D-gluco-pyranosyl (1→2)]-β-D-glueuronopyranosyloxy}-22-O-[2(E) -methyl-2-butenyloyloxy]-15,16,28-trihydroxy- (3β,15α,16α,22α)-olean-12-ene (4). The antifeedant properties of 3 and 4 toward Epilachna larvae are discussed.
AB - 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-{[β-D-galacto-pyranosyl(1→3)-β-D-glucopyranosyl (1→2)]-β-D-glueuronopyranosyloxy}-22-O-(2-methylbutyroyloxy) -15,16,28-trihydroxy-(3β,15α,16α,22α) -olean-12-ene (3) and 3-O-{[β-D-galactopyranosyl(1→3)-β-D-gluco-pyranosyl (1→2)]-β-D-glueuronopyranosyloxy}-22-O-[2(E) -methyl-2-butenyloyloxy]-15,16,28-trihydroxy- (3β,15α,16α,22α)-olean-12-ene (4). The antifeedant properties of 3 and 4 toward Epilachna larvae are discussed.
UR - http://www.scopus.com/inward/record.url?scp=0036180466&partnerID=8YFLogxK
U2 - 10.1021/np000600b
DO - 10.1021/np000600b
M3 - Article
SN - 0163-3864
VL - 65
SP - 115
EP - 120
JO - Journal of Natural Products
JF - Journal of Natural Products
IS - 2
ER -