Abstract
Three bidesmosidic 16α-hydroxyprotobassic acid saponins were isolated from the seeds of
Mimusops laurifolia along with six known saponins, butyroside C, arganine D, Mi-saponin A, tieghemelin A, arganine A and arganine C. The structures were established by spectroscopic methods..
Nine saponins were isolated from the seeds of
Mimusops laurifolia. Their structures were established using one- and two-dimensional NMR spectroscopy and mass spectrometry. Three of them are identified as: 3-
O-(β-
d-apiofuranosyl-(1
→
3)-β-
d-glucuronopyranosyl)-28-
O-(α-
l-rhamnopyranosyl-(1
→
3)-β-
d-xylopyranosyl-(1
→
4)-α-
l-rhamnopyranosyl-(1
→
2)-α-
l-arabinopyranosyl)-16α-hydroxyprotobassic acid, 3-
O-(β-
d-glucopyranosyl-(1
→
3)-β-
d-glucopyranosyl)-28-
O-(α-
l-rhamnopyranosyl-(1
→
3)-β-
d-xylopyranosyl-(1
→
4)-α-
l-rhamnopyranosyl-(1
→
2)-α-
l-arabinopyranosyl)-16α-hydroxyprotobassic acid and 3-
O-(β-
d-glucopyranosyl-(1
→
6)-β-
d-glucopyranosyl-(1
→
6)-β-
d-glucopyranosyl)-28-
O-(α-
l-rhamnopyranosyl-(1
→
3)-β-
d-xylopyranosyl-(1
→
4)-α-
l-rhamnopyranosyl-(1
→
2)-α-
l-arabinopyranosyl)-16α-hydroxyprotobassic acid.