New Ester and Furocoumarins from the Roots of Pituranthos tortuosus

Effect of the method of preparation on the composition and cytotoxic activity of the essential oil of Pituranthos tortuosus.

The aerial parts of Pituranthos tortuosus (Desf.) Benth and Hook (Apiaceae), growing wild in Egypt, yielded 0.8%, 0.6%, and 1.5% (v/w) of essential oil when prepared by hydrodistillation (HD), simultaneous hydrodistillation-solvent (n-pentane) extraction (Lickens-Nickerson, DE), and conventional volatile solvent extraction (preparation of the "absolute", SE), respectively. GC-MS analysis showed...

Coumarins of Roots of Pituranthos triradiatus Growing in Egypt From the petroleum ether and diethyl ether extracts of roots of Pituranthos triradiatus

Five apigenin-based C-gfycosylflavones were isolated from the leaves and pods of Prosopis chilensis and identified as vicenin-1, 6†-0-acetyrvicenin-l, vicenin-2, vitexin and isovitexin. 6*â€TM-0-ac«ryrvicenin-l could be a new acylated di-Cglycosylflavone and Vicerun-l is reported here for the first time in the genus Prosopis. The structures of the isolated compounds were established through ...

Two New Furanocoumarins from the Roots of Angelica dahurica

Furocoumarins from Heracleum rawianum in Iran

The species Heracleum rawianum belongs to Apiaceae, is one of the native species in Iran. The leaves and fruits of Heracleum rawianium are used traditionally in Iran as flavouring agent and spice for food. In the present work, the extraction of aerial parts of this plant with acetone by maceration is described. Our phytochemical analysis of the chloroform extract of the aerial parts of this pla...

Anti-tumor Activity and Cell Cycle Arrest of a New Diterpene Ester from Daphne mucronata Using K562 Cells

In our search for new anticancer medicinal plants, the antiproliferative activity of the methanol extract of Daphne mucronata (Thymelaeaceae) was evaluated using human myelogenous leukemia K562 cells. The cells responded to plant treatments in a dose dependent manner and the IC50 of the crude extract (equivalent to 1 g of plant leaves powder per ml) and the purified active component were found ...