Aromatic Plants of Saudi Arabia - Part 8-* GC/MS Analysis of Essential Oils ofPulicaria arabicaandP. undulata

6‐Hydroxycarvotanacetone and other constituents of the essential oil of Laggera alata (D. Don) Sch. Bip. ex Oliv.

“…21 However, the spectral data given for the compound isolated from the latter plant did not correspond with those obtained with a synthesized compound, and it was doubtful whether the 2,3-dimethoxy-p-cymene isolated was identical with the synthesized compound. 43 An unusual, highly substituted and symmetrical compound, 1,4-dimethoxy-2,3,5,6-tetramethylbenzene ( = 1P-dimethoxydurene) was detected in small amounts in the oil, and as such not included in the table, but the amount in the oil was found to increase on storage at 4 "C. Its identity was confirmed by co-injection with an authentic synthesized ample.^' This compound has also been detected in the essential oils of Pulicharia undulata L., 44 and Eupatorium stoechadosmum H a n~e ,~' .~~ both family Asteraceae. 6-Hydroxycarvotanacetone [64809-60-51, an a, P-unsaturated hydroxyketone, which we found in this oil and designated compound 11, has so far not been found in nature, but has been synthes i~e d .~' .~~ Its identity was confirmed by IR and mass spectrometry.…”

Isolation and antimicrobial activity of two phenolic compounds from Pulicaria odora L.

“…Compounds 1 and 2 can be considered as two thymol isomers isolated for the first time from Pulicaria genus while thymol and some thymol derivatives have been previously reported in others Pulicaria species (Metwally et al, 1986;Mossa et al, 1987;Zdero et al, 1988;Weyerstahl et al, 1999).…”

Application of wild Saudi plant extracts to control antibiotic resistant Staphylococcus aureus

“…essential oils revealed that they have high contents from phenolic compounds, sesquiterpene and monoterpene hydrocarbons (Mossa et al, 1987). Chhetri et al (2015) reported that Pulicaria species were successful for acting as antimicrobial, antioxidant, galactagogues, a ntiepileptics, and antifungal agents due to their contents from bioactive phytochemicals.…”