منابع مشابه
Germacrane derivatives from Santolina pinnata subsp. neapolitana.
From the aerial parts of Santolina pinnata subsp. neapolitana, one new and four known germacrane derivatives were isolated. The new compound was characterized as 1alpha,10beta-epoxy-7alphaH-germacr-4(15)-ene-2/beta5alpha,6beta-triol by spectral methods.
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Synthesis of bicyclic [1] and tricyclic [2] terpenoid lactones and the preliminary results of biological tests for their feeding deterrent activity [3] previously were presented. The tests, which were carried out on three storage pest insects: the grain weevil (Sitophilus granarius L.), the confused flour beetle (Tribolium confusum Duv.) and the khapra beetle (Trogoderma granarium Ev.), showed ...
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The species of genus Achillea, particularly those belonging to the Achillea millefolium group have received a lot of attention so far, due to their use in traditional medicine. Among the numerous chemical compounds isolated from the A. millefolium species, the sesquiterpene lactones are usually one of the major constituents (Seaman, 1982). Continuing our chemotaxonomic examination of Bulgarian ...
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The various types of lactones have different durability and properties. The most stable among γ-lactones and δ-lactones, which are those containing respectively five or six carbon in the cyclic ring. The lowest durability can be attributed to α-lactones, due to the strong tension torsion and angle of bonds between the atoms forming the ring. Similar tension, to a lesser extent also observed in ...
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ژورنال
عنوان ژورنال: Chemistry of Natural Compounds
سال: 1978
ISSN: 0009-3130,1573-8388
DOI: 10.1007/bf00565274