The
system I2/dimethyl sulfoxide mediates the one-step
transformation of α-isopropylidene ketones into furan rings
following a biomimetic approach. This methodology has been used for
the synthesis of terpene furans such as mintfurane, curzerene, atractylon,
and isoatractylon, all of them possessing interesting biological activities.
The synthesis of linderazulene directly from 4,5-epoxygermacrone via
a cascade reaction shows the potential of this protocol. Additionally,
this compound proved to show significant ixodicidal activity.
This study presents data about chemical composition of essential oils for Thymus populations from the Albania. The genus Thymus contains about 350 species of aromatic plants in the family Lamiaceae. It is in the form of a beautiful shrub with numerous branches used often as decorative plant besides it uses for culinary and medical purposes. Thymus plants are part of spontaneous flora in Albania and almost throughout the Mediterranean areas. Thymus vulgaris, Thymus capitatus and Thymus serpyllum samples from different areas of Albania were taken in July 2017. The air dried plant samples were cut in small pieces (1-2 cm) and after that were subjected to European Pharmacopoeia apparatus (Clevenger type) for 4 hours to obtain Thymus essential oil. The chemical composition of essential oils was analyzed using GC/FID technique. The oil of each Thymus samples was injected in a Varian 450 GC. VF-1ms capillary column (30 m x 0.33 mm x 0.25 um) were used for separation of compounds. 40-65 compounds were found in analyzed samples. Para-Cymene, gama-Terpinen, Thymol and Carvacrol were identified as main constituents and all analyzed essential oils of Thymus samples from Albania. Para-Cymene was the main constituent for Thymus vulgaris samples. Carvacrol was found in higher percentage for Thymus capitatus and Thymus serpyllum. Thymol was in higher percentage for Thymus vulgaris and Thymus serpyllum. Total of Thymol and Carvacrol were higher for Thymus serpyllum samples. The same compounds were found for all Thymus samples but were noted differences in percentage between them. This is related with differences between species obtained for analysis but is not excluded the impact of geographic and geological factors. Data reported in this paper were similar to those published in previous works in Balkan and Mediterranean area.
This study presents data on the chemical analysis of essential oil for the Saturea Montana plant population from the Burreli area (Central Albania). Saturea Montana is the native variety in the Mediterranean region, though it is adapted and spread in many countries around the world. It has a long history of medical and culinary use, as well as a decorative garden plant. It has a long history of medical and culinary use, as well as a decorative garden plant. During herbs collection, two factors were identified which describe the natural conditions of their growth; lands with differences in their composition (red soil and black soils) and in the height of 600 to 1000 m, with the aim of influencing these factors in the composition of their essential oil. The dried plants in the air were cut into small pieces (1-2 cm) and then subjected to a European Pharmacopoeia (Clevenger type) for a period of 4 hours to extract essential oil from Saturea Montana. The chemical composition of essential oils is analyzed using the GC / FID technique. Each Saturea Montana sample extract was injected into a Varian 450 GC. For the separation of compounds, capillary columns VF-1ms (30m x 0.33mm x 0.25μm) were used. p-Cymene, Linalool, Thymol and Carvacrol were identified as the main constituents in all the analyzed essential oils of Saturea Montana samples obtained from the Burrel area. Their concentrations are in the range of 25 to 50%, and this fact is mainly related to the geographic position of the samples and the time of sampling.
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