Drug – bio-affecting and body treating compositions – Baits – attractants – or lures
Reexamination Certificate
1997-05-05
2001-06-12
Pak, John (Department: 1616)
Drug, bio-affecting and body treating compositions
Baits, attractants, or lures
C514S675000, C514S724000
Reexamination Certificate
active
06245328
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to mixtures and compositions suitable for controlling
Hylotrupes bajulus
and
Pyrrhidium sanguineum
and their use for this purpose.
2. Description of the Background Art
In cases in which the control of insect pests using conventional insecticides is not indicated, for example in the treatment of structural timber in residential buildings, there is great interest in a biological pest control which can be selectively directed against a single type of pest or a small group of pests.
Methods of pest control in which the sex attractants or pheromones (attractants in the following) of the particular pests are used are generally known (cf. DE-A 36 03 377 [control of the vine moth] or WO-A 93/08148 [control of the cobbling moth]).
Especially
Hylotrupes bajulus
and in addition
Pyrrhidium sanguineum
are important wood pests, because their larvae bore into wood and destroy it.
Hylotrupes bajulus
and
Pyrrhidium sanguineum
belong to the Cerambycidae family (round-headed borers), in which the involvement of attractants in mating behavior has already been studied for a long time. Contact pheromones or pheromones which act at short distances (short-range pheromones) have already been found in females of various round-headed borer species (cf. USDA Forest Service Research Note NE-240, 1 (1977); Appl. Ent. Zool. 27 (1992), page 489; J. Chem. Ecol. 18 (1992), page 245; ibid., 19 (1993), page 2347). In the case of
Hylotrupes bajulus,
it was suspected that the females form an attractant on their elytra which is used for finding a mate.
There is a study on an attractant which is released by the males (cf. Chem. Lett. (1984), page 263; Appl. Ent. Zool. 17 (1982), page 497; ibid. 21 (1986), page 606).
As a rule, from economic points of view it makes little sense for pest control to isolate the natural attractants from the pests producing them, because they are only there in low concentration. Instead of this, the search is aimed mostly at synthetically produced natural substances, or synthetic substances structurally related to these.
OBJECTS OF THE INVENTION
It is an object of the present invention to control
Hylotrupes bajulus
and
Pyrrhidium sanguineum
by means of synthetic attractants which are either natural, or related in terms of chemical structure to the natural attractants.
SUMMARY OF THE INVENTION
We have found that this object is achieved by a mixture which contains one stereoisomer of 3-hydroxyhexan-2-one and two stereoisomers of hexane-2,3-diol.
Mixtures were also found in which the abovementioned stereoisomers have specific configurations of the asymmetric carbon atoms and are furthermore present together in specific quantitative ratios.
In addition, the invention relates to compositions based on the abovementioned mixtures and additionally the use of the mixtures, compositions and of (3R)-3-hydroxyhexan-2-one for controlling
Hylotrupes bajulus
and
Pyrrhidium sanguineum.
REFERENCES:
Chemical Abstracts 32 (13): 7016e, Jul. 1938.*
Fettkoether, R. et al., The male pheromone of the old house borerHylotrupes bajulus(L.) (coleoptera:Cerambycidae): identification and female response, Experientia, 51(3), 270-277, Mar. 1995.*
Schroder, F. et al., Synthesis of (3R)-hydroxy-2-hexanone, (2R,3R)-2,3-hexanediol and (2S,3R)-2,3-hexanediol, the male sex pheromone ofHylotrupes bajulusandPyrrhidium sanguineum(Cerambycidae), Liebigs Annalen der Chemie, vol. 1994, issue 12, 1211-1, Dec. 1994.
Dettner Konrad
Fettkoetter Regine
Noldt Uwe
Schroder Frank
Wittko Franke
BASF - Aktiengesellschaft
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Pak John
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