solavetivone/henbane

The integrated recovery of solavetivone from fungus elicited "hairy root" cultures of Hyoscyamus muticus is examined using volatile organic solvents and solid-phase adsorbents in an external loop extraction configuration. Hexane and pentane are shown to be toxic when added directly to the culture;

The production of sesquiterpene-type phytoalexins with a vetispyradiene skeleton by Hyoscyamus albus hairy roots induced by methyl jasmonate (MeJA) was reported in a previous paper. The production pattern on co-treatment with cupper sulfate and MeJA (CuSO(4)-MeJA) showed a TLC profile differing from

The treatment of hairy roots of Hyoscyamus albus with copper sulfate (Cu2+) and methyl jasmonate (JAMe) produced several phytoalexins having the vetispyrane skeleton. Lubimin and solavetivone were isolated after treatment with Cu2+. Seven sesquiterpenoid phytoalexins were isolated from the culture

The ability of methyl jasmonate (MeJa) to induce sesquiterpene production in root cultures of Hyoscyamus muticus has been studied. Although MeJa alone could not induce sesquiterpene in unwounded culture, MeJa added in the presence of wounding displayed a dose-dependent response, saturating at 50 µM.

The elicitation of Hyoscyamus muticus root and cell suspension cultures by fungal elicitor from Rhizoctonia solani causes dramatic changes in respiration, nutrient yields, and growth. Cells and mature root tissues have similar specific oxygen uptake rates (SOUR) before and after the onset of the

Solavetivone, a potent antifungal phytoalexin, is derived from a vetispirane-type sesquiterpene, premnaspirodiene, by a putative regio- and stereo-specific hydroxylation, followed by a second oxidation to yield the alpha,beta-unsaturated ketone. Mechanistically, these reactions could occur via a