Daphylloside

Vietnam Journal of Chemistry, 2015, 53(2e).

Iridoid glycosides from Morinda tomentosa and their endoplasmic reticulum stress modulation activity[Reference: WebLink]

Three iridoids 1 - 3, asperulosidic acid, Daphylloside, and asperuloside, were isolated from the methanol extract of the leaves of Morinda tomentosa.
METHODS AND RESULTS:
Their chemical structures were elucidated by 1D- and 2D-NMR spectra and in comparison with those reported in the literature. The effects of these compounds on the endoplasmic reticulum stress in XBP1-eGFP-transfected the 293 T cells were measured. Compound 3 significantly reduced the ER-stress both in DMSO-treated and thapsigargin-treated cells. Unlike this compound, compound 3 selectively reduced thapsigargin-induced ER-stress without any effect on the level of XBP1 splicing in DMSO-treated cells.
CONCLUSIONS:
These results suggested that compounds 2 and 3 can be suggested as new ER stress regulators.

Nat Prod Commun. 2013 Nov;8(11):1507-8.

Three new iridoid glucoside salts from Hedyotis tenelliflora Growing in Vietnam.[Pubmed: 24427927]

Three new sodium salts of iridoid acids, deacetylasperulosidic acid sodium salt (1), teneoside D (2), and teneoside E (3) were isolated from the leaves of Hedyotis tenelliflora Blume (Rubiaceae), together with seven known iridoids, 6alpha-hydroxygeniposide (4), 6beta-hydroxygeniposide (5), 6-O-methyldeacetylasperulosidic acid methyl ester (6), 6-O-methylscandoside methyl ester (7), 6alpha-methoxygeniposidic acid (8), Daphylloside (9), and mollugoside methyl ester (10). Their chemical structures were elucidated by 1D and 2D NMR spectroscopy, as well as HR-ESI-MS analysis.