The chemical composition of the essential oils of the wild growing plants of Greek S. spinosa L., S. parnassica subsp. parnassica Heldr.& Sart ex Boiss., S. thymbra and S. montana were determined by GC and GC/MS analysis. The larvicidal activities of the essential oils were assayed against Culex pipiens biotype molestus. The analytical data indicated that various monoterpene hydrocarbons and ph...

This paper shows the changes of the volatile compounds from four Astragalus species at three phenological stages: leaf development, flowering and fructification, which might be connected with the plant defense. After GC/MS analyses of Astragalus glycyphyllos L., A. hamosus L., A. cicer L. and A. spruneri Boiss., different groups of volatile compounds were found: hydrocarbons, alcohols, aldehyde...

Two new lignans (R,Z)-3-(3,4-dimethoxybenzyl)-2-(3, 4-dimethoxybenzylidene)-gamma-butyrolactone (1) and (2R, 3S)-2-acetoxy-2,3-bis(3,4-dimethoxybenzyl)-gamma-butyrolactone (2), and four new polyacetylenes, (2Z,8E,10E)-heptadeca-2,8,10-triene-4, 6-diyn-1-ol (3), (2E,9Z)-octadeca-2,9-diene-4,6-diyne-1,18-diol (4), (2E,9Z)-18-hydroxy-octadeca-2,9-diene-4,6-diyn-1-yl acetate (5), and (2E,9Z)-1-hydr...

From the whole plant of Dracocephalum kotschyi BOISS., two new monoterpene glycosides (9, 10), together with seven known terpenoids and a phytosterol (1-8), were isolated. Their structures were determined to be limonen-10-al (1), geranial (2), neral (3), beta-sitosterol (4), oleanolic acid (5), ursolic acid (6), p-mentha-8-en-1,2-diol (7), colosolic acid (8), limonen-10-ol 10-O-beta-D-glucopyra...