Biological activities and polyphenolic profile of (L.) L.

The -butanol extract of (L.) L. aerial parts (BESA) was analysed by LC-HRMS/MS.

A new triterpene saponin and known compounds from the polar extract of L. and evaluation of their antioxidant activity.

A new triterpene saponin, 2, 3, 21, 23-tetrahydroxyolean-12-en-28-oic-acid-28--β-D- glucosyl-(2''→1')-β-D-glucoside (), was isolated from the -butanol extract of dried aerial parts of L. (Lamiaceae) in addition to two known flavonoids, apigenin 7--β-D-glucoside (), threo-guaiacylglycerol 3--[6---hydroxybenzoyl]-β-D-glucoside (), luteolin 7--β-D-glucoside (), verbascoside () and rosmarinic acid (). The structure elucidation of these compounds was based on analyses of spectroscopic data including 1D-, 2D-NMR and HR-ESI-MS techniques and by comparing their NMR data with those reported in the literature.

Triterpenes from Salvia argentea var. aurasiaca and their antibacterial and cytotoxic activities.

Five undescribed ursane-type triterpenes, identified as 1β,3β,15α-trihydroxy-urs-9(11)-12-diene (1), 1β,3β,15α,28-tetrahydroxy-urs-9(11),12-diene (2), 1β,3β-dihydroxy-urs-9(11),12-dien-28-al (3), 1β,3β,7β,15α,28-pentahydroxy-urs-12-ene (4), and 1β,3β,15α-trihydroxy-urs-11-en-28-al (5), together with five known compounds (6-10), were isolated from the acetone extract of the dried aerial parts of Salvia argentea L. var. aurasiaca (Pomel) Batt.

Triterpenoids from Salvia argentea var. aurasiaca (Pomel) Batt. & Trab. and their chemotaxonomic significance.

Ten triterpenoids were isolated from the exudate of Salvia argentea L. var. aurasiaca (Pomel) Batt.

Comparative composition of four essential oils of Oregano used in Algerian and Jordanian folk medicine.

The essential oils obtained from Origanum glandulosum Desf., collected from two different localities of north-eastern Algeria, Constantine and Jijel, and from O. syriacum var.

New sesquiterpene lactone and other constituents from Centaurea sulphurea (Asteraceae).

Five known flavonoids (1-5) and three sesquiterpene lactones (6-8) are reported for the first time from the endemic species Centaurea sulphurea Willd. (Asteraceae). Compound 7 is a new heliangolide (6R, 7R, 8S, 3'R)-8alpha-(3',4'-dihydroxy-methylene-2'-butanoyloxy)-15-oxo-helianga-1 (10), 4(5), 11(13)-trien-6,12-olide, named as sulphurein.

A new alkaloid and flavonoids from the aerial parts of Euphorbia guyoniana.

One novel alkaloid, 1,5-diphenyl-3-styryl-2-pyrazoline 1, in addition with six known flavonoids namely, kaempferol, kaempferol 3-O-glucoside, kaempferol 3-rutinoside, quercetin, quercetin 3-O-glucoside, and rutin, were isolated from the aerial parts of Euphorbia guyoniana. Their structures were established on the basis of physical and spectroscopic analysis, and by comparison with the literature data.