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'Terpenoids' in keywords Facet   Publication Year 1985  [X]
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1985[X]
1Author    E. W. Ollenweber, K. M. Ann, F.J A Rriaga, G. YatskievychRequires cookie*
 Title    Flavonoids and Terpenoids from the Leaf Resin of Pluchea odorata  
 Abstract    The chemical composition of the leaf resin of Pluchea odorata has been studied from material collected in Tamaulipas, Mexico. It mostly consists of triterpenes and phytosterols and an eudes-mane type sesquiterpene. Very small amounts of ten different flavonol aglycones occur, dissolved in this resin; most of them are 6-methoxy compounds. A comparison with previous results on material from El Salvador shows that the latter contains a lesser number of triterpenes and especially of flavonoids, but more sesquiterpenes, while the n-alkane composition varies only quantitatively between both populations. 
  Reference    Z. Naturforsch. 40c, 321 (1985); received November 26 1984/February 13 1985 
  Published    1985 
  Keywords    Pluchea odorata, Asteraceae, Leaf Resin, Flavonoid Aglycones, Terpenoids 
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 TEI-XML for    default:Reihe_C/40/ZNC-1985-40c-0321.pdf 
 Identifier    ZNC-1985-40c-0321 
 Volume    40 
2Author    B. V. Burger, W. M. Mackenroth, D. Enice, Smith, H.S C Spies, P. R. AtkinsonRequires cookie*
 Title    Chemical Composition of the Wing Gland and Abdominal Hair Pencil Secretions of the Male African Sugarcane Borer, Eldana saccharina (Lepidoptera: Pyralidae)  
 Abstract    In addition to the previously identified wing gland lactone, eldanolide, and the tail brush components, vanillin and p-hydroxybenzaldehyde, several further terpenoid compounds, satu­ rated and unsaturated alcohols and acids, a thioalcohol, as well as two saturated macrocyclic lactones, were identified in the wing gland and tail brush secretions of the male African sugarcane borer Eldana saccharina (Walker). The stalk borer Eldana saccharina W alker is found in a large number of natural host plants in Africa [1]. Since 1970 it has becom e an increasingly serious pest in South African sugarcane fields [2] and it is also a recognized pest of m aize and other cereal crops in West and East African countries [3], Male moths of this insect, in common with other gallerines, have a gland at the base of each fore wing with a duct open­ ing towards the wing tip, as well as a pair of promi­ nent hair pencils on the eighth segm ent [4, 5]. These disseminating structures are assumed to be involved in pherom one com m unication in E. saccharina. The possible use of the synthetic pherom ones for monitoring and/or controlling the insect has led to considerable interest in the identification and syn­ thesis of the pherom one secreted by the male moth. The y-lactone, rra«5,-3 ,7-dim ethyl-6-octen-4-olide (eldanolide) was identified as a com ponent of the wing gland secretion [6 , 7] and several independent syntheses have been elaborated for the natural (3S, 4R) isom er [8—11]. It has been suggested [7, 12] that eldanolide acts as a long-range attractant of the fem ale. Vanillin and p-hydroxybenzaldehyde have been found in the abdominal hair pencil or tail brush secretion and were reported to act as an aphrodisiac [13]. In these studies extensive use was made of labo­ ratory methods for the evaluation of the biological Reprint requests to Prof. B. V. Burger. 
  Reference    Z. Naturforsch. 40c, 847 (1985); received September 12 1985 
  Published    1985 
  Keywords    Chemical Communication, Insect Pheromones, Terpenoids, Macrocyclic Lactones, Eldana saccharina 
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 TEI-XML for    default:Reihe_C/40/ZNC-1985-40c-0847.pdf 
 Identifier    ZNC-1985-40c-0847 
 Volume    40