Abstract Iridoids are a class of secondary metabolites found in wide variety plants. typically plants as glycosides, most often to glucose. The genus Stachys L. is one the largest genera Lamiaceae family, containing iridoids. Aim aim this study was isolation and identification iridoids from aerial parts byzantina K. Koch germanica Methods For iridoids, different chromatographic methods (NP-TLC,...

A compilation of new naturally occurring iridoids and secoiridoids including their glycosides, esters, aglycones, derivatives and dimers reported during mid 2008-2010 is provided with available physical and spectral data: mp, [α](D), UV, IR, circular dichroism (CD), (1)H- and (13)C-NMR as well as natural source with family and references. The important bioactivity of new and known iridoids and ...

Introduction. – The genus Hedyotis (Rubiaceae family) contains 69 species distributed in China [1], some of which have been used as Traditional Chinese Medicines (TCM), such as Hedyotis diffusa for treating cancer, and Hedyotis chrysotricha for treating enteritis [2]. The characteristic chemical constituents of this genus are anthraquinones, flavonoids, iridoids, and triterpenoids [3]. Plants o...

noni is indigenous to the Hawaian and Tahitian islands. A number of constituents have already been isolated from this plant, and they include anthraquinones, flavonoids, iridoids and oligosaccharides. Moreover, it has been established that the constituents of Hawaiian noni differ from those of noni found on the Indian sub-continent. Cimanga reported on the isolation of iridoids with complement-...

Enzyme inhibitory activities of 14 iridoids previously obtained from two Malaysian medicinal plants, Saprosma scortechinii and Rothmannia macrophylla, were evaluated in vitro using soybean lipoxygenase and bovine testis hyaluronidase. Most of the iridoids, including asperulosidic acid, paederosidic acid, and an epimeric mixture of gardenogenins A and B, did not show any effect on the enzyme act...

From the leaves of Phlomis aurea, two new iridoids of unique structures named 3-epiphlomurin (1) and phlomurin (2), a new megastigmane glucoside phlomuroside (3) and a new benzyl alcohol glycoside having the structure benzyl alcohol-O-beta-xylopyranosyl-(1-->2)-beta-glucopyranoside (4) have been isolated together with four known iridoids auroside, lamiide, 8-epiloganin and ipolamiide, two known...

Iridoid profiles of honeysuckle berry were studied. Compounds were identified by ultra-performance liquid chromatography coupled with electrospray ionization mass spectrometry UPLC-ESI-qTOF-MS/MS in positive and negative ions mode. The MS fragmentation pathways of detected iridoid glycosides were also studied in both modes. In the negative ESI mass spectra, iridoids with a methyl ester or lacto...

Two phenylpropanoid-conjugated iridoids, deglucosyl gaertneroside (1) and morindoidin (2), were isolated from the leaves of Morinda morindoides (Rubiaceae) by activity-guided fractionation using an anti-malarial activity assay. The known related iridoids molucidin (3) prismatomerin (4), two lignans, abscisic acid, megastigmanes, flavonol glycosides also identified. structures compounds elucidat...

In China, Scrophularia ningpoensis Hemsl (Scrophulariaceae) has been cultivated for many years; however, the effects of drought on the content of secondary metabolites in Radix Scrophulariaceae are still unknown. The study investigated the medicinal components of S. ningpoensis including harpagoside, aucubin, catalpol, harpagide, and cinnamic acid in relation to drought stress. Three ecotypes o...