The Authors have studied the biosynthesis of some furocoumarins contained in Ruta graveolens. Labeled 5,7and 7,8-dihydroxycoumarins have been administered to the herb, however practically no incorporation of radioactivity was observed in the isolated furocoumarins. Moreover, with the aim to study in a more detailed way the role of rutaretin and marmesin, trapping experiments have been performed...

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Ultra low doses used in homeopathic medicines are reported to have healing potential for various diseases but their action remains controversial. In this study we have investigated the antitumour and antimetastatic activity of selected homeopathic medicines against transplanted tumours in mice. It was found that Ruta graveolens 200c and Hydrastis canadensis 200c significantly increased the life...

The effects of some potassium channel blockers on the ionic currents and on the so-called K(+)-depolarization in intact myelinated nerve fibres were studied. 4-AP, and in particular, Flaxedil, proved to be selective K(+)-current blockers. However, TEA, a crown ether (DCH18C6), a longchained triethylammonium compound (C10-TriEA), capsaicin, and the extract from the medicinal herb Ruta graveolens...

Biological activity of a plant extract (common rue, Ruta chalepensis) and a semi purified fraction (from "tacaco cimarrón", Sechium pittieri) on mahogany shootborer larvae (Hypsipyla grandella) was studied. A randomized complete block design, with four replications, was used. H. grandella third instar larvae were exposed for 24 h to Cedrela odorata leaf discs dipped in several treatment dissolu...

Floral development was investigated in Ruta graveolens and Psilopeganum sinense, representing two genera in the tribe Ruteae. Special attention was paid to the sequence of initiation of organ whorls in the androecium and gynoecium. The antepetalous stamens arise at the same level as the antesepalous stamens in both species. The carpels are antepetalous in both taxa, indicating the androecium in...

Resumen. En este artículo se aplica la metaheurística de colonia de hormigas (ACO) para resolver el problema de ruteo que se presenta al realizar la tarea de recolección de residuos sólidos en UNAM-CU. Este espacio está dividido en varios circuitos de los cuales el circuito CCU será nuestro primer caso de estudio. El encontrar la mejor ruta para este circuito, puede verse como un problema de op...

Suspension cultures of Rosa sp., soybean (Glycine max L.), wheat (Triticum monococcum L.), sweet clover (Melilotus alba Desc.), Haplopappus gracilis Nutt., and rue (Ruta graveolens) produced ethylene. The amount varied with the species. The rate of formation in rose and Haplopappus cells paralleled growth but accelerated when the stationary phase was reached, after which the rate declined sharp...

The first syntheses of two quinoline alkaloids found in the medicinal herb Ruta chalepensis are reported via the conjugate addition of an o-iodoaniline to an acetylenic sulfone, followed by Pd-catalyzed carbonylation, intramolecular acylation of the corresponding sulfone-stabilized carbanion, and reductive desulfonylation.