Flavonoids ofRhamnus lycioides; Part 2

Flavone Glycosides of Sideritis incana

Anti-inflammatory compounds from Sideritis javalambrensis n-hexane extract.

The anti-inflammatory activities of the n-hexane extract of Sideritis javalambrensis and several purified fractions were investigated using the carrageenan mouse paw edema test. Progressive fractionation led to the isolation of the active principles ent-16-hydroxy-13-epimanoyl oxide [1] and esters of tyrosol with palmitic, stearic, behenic, and lignoceric acids.

Seasonal variation of hypolaetin 8-glucoside inSideritis mugronensis borja

A quantitative analysis of the antiinflammatory flavonoid hypolaetin 8-glucoside from Sideritis mugronensis during an annual growth cycle was carried out. After an irregular increase in spring, the maximum levels were reached and maintained in early summer samples.

COX-2 and sPLA2 inhibitory activity of aqueous extract and polyphenols of Rhizophora mangle (red mangrove)

The aqueous extract of Rhizophora mangle bark and its polyphenolic fractions showed remarkable in vitro antiinflammatory activity in a preliminary study. The low molecular weight fraction exhibited cyclooxygenase-2 inhibitory activity while the total aqueous extract and the low molecular weight fraction showed secretory phospholipase A(2) inhibitory activity.

Anti-Inflammatory Activity of a Flavone from Sideritis leucantha.

Effects ofThymus species extracts on rat duodenum isolated smooth muscle contraction

The diethylether, ethylacetate and butanolic extracts from Thymus webbianus and Thymus leptophyllus were tested for spasmolytic activity. Pre-incubation of the isolated rat duodenum with these extracts for 10 min produced a concentration-dependent inhibition of acetylcholine-induced contractions. This effect was at least ten times greater with the apolar extracts than with the polar extracts.

Volatiles ofSideritis mugronensisFlower and Leaf

ABSTRACT The composition of the essential oil obtained from the flowers and the leaves of Sideritis mugronensis in two different stages of their reproductive development is described. The major components of the leaf and flower oils were sabinene: 1.30–10.59% and 2.70–15.21%; 1,8-cineole: 11.60–17.19% and 11.06–28.65%; and α-bisabolol: 5.57–25.49% and 3.40–16.12% respectively.

Flavonoid Constituents of Rhamnus lycioides L.

Abstract From the aerial part of Rhamnus lycioides, which is used in folk medicine in eastern Spain as an antihypertensive drug, seven free flavonoid aglycones were isolated. They were structurally eluci­dated as rhamnazin. rhamnocitrin, isorhamnetin, kaempferol, quercetin. quercetin-3-methylether and taxifolin. by applying the principal spectroscopic methods and TLC with authentic markers.