Polyprenols from Ficus carica Leaves and their Biological Activity

Chemistry of Natural Compounds -     

Essential Oil from the Aerial Part of Saponaria griffithiana and S. officinalis

Chemistry of Natural Compounds -     

Triterpene Glycosides of Zygophyllum eichwaldii. III. Structure of Zygoeichwaloside G

The new triterpene glycoside zygoeichwaloside G was isolated from the roots of Zygophyllum eichwaldii C.A.M. by column chromatography. Acid hydrolysis and PMR and ¹³C NMR spectroscopy using twodimensional COSY, TOCSY, and HSQC and analysis of HMBC and ROESY spectra established that glycoside G is 19--hydroxyursolic acid 3-O--L-(2-O-sulfo)-arabinopyranoside.     

Volatile Constituents from the Aerial Part of Thermopsis alterniflora

Chemistry of Natural Compounds -     

Chemical composition,antimicrobial and antioxidant activities of the essential oils of three Uzbek Lamiaceae species

The chemical composition of the essential oil from the aerial parts of three Lamiaceae species from Uzbekistan was investigated by GC-MS analysis. β-Linalool (26.6%), α-terpineol (10.0%), coumarin (8.9%) and 4,5,7,7α-tetrahydro-4,4,7α-trimethyl-2(6H)-benzofuranone (5.4%) resulted as the main components of Ajuga turkestanica essential oil, while camphene (17.1%), 1,8-cineole (15.9%), β-cymene (7.9%) and limonene (7.4%) in Phlomis regelii. The essential oil of Thymus seravschanicus was dominated by thymol (37.5%), phellandral (26.0%), τ-terpinene (6.6%) and β-cymene (5.2%). The essential oils had considerable antimicrobial activity against different bacterial strains and fungi. Among the tested samples of essential oils, P. regelii essential oil has the significant antioxidant activity with IC₅₀ value of 117.8 ± 8.02 μg/mL.     

Chemical Composition and Antimicrobial Activity of Essential Oil from the Aerial Part of Haplophyllum latifolium

Chemistry of Natural Compounds -     

Neutral lipids, phospholipids, and biological activity of extracts from Zygophyllum oxianum

The chemical composition of lipid extracts from aerial parts of Zygophyllum oxianum was determined by GC and TLC. The yield of total lipids was 0.75% in leaves, 0.33% in stems, and 0.49% in fruit calculated for fresh plant mass. Phospholipids were represented by nine classes, of which phosphatidylcholine dominated (55.8% in leaves, 56.4% in stems, 63.7% in fruit of total PL). The n-BuOH extract from the plant aerial part exhibited noticeable antifungal activity. The CHCl₃:MeOH (2:1) extract from leaves and stems exhibited pronounced in vitro cytotoxicity against human bladder carcinoma cell line 5637 with IC₅₀ 6.2 μg/mL.     

Triterpene Glycosides of Zygophyllum eichwaldii. II. Structure of Zygoeichwaloside I

Column chromatography of roots ofZygophyllum eichwaldiiC.A.M. (Zygophyllaceae) afforded the new glycoside zygoeichwaloside I. Acid hydrolysis, alkaline saponification, solvolysis, and ¹ H and ¹³ C NMR spectroscopies using COSY, TOCSY, ROESY, HSQC, and HMBC methods established its structure as the 28-O--D-glucopyranosyl ester of pomolic acid 3-O--D-2-O-sulfonylgalactopyranoside.