EP1848276A1 - Tetrazinderivate mit antimykotischer wirkung und ihre verwendung - Google Patents
Tetrazinderivate mit antimykotischer wirkung und ihre verwendungInfo
- Publication number
- EP1848276A1 EP1848276A1 EP06706788A EP06706788A EP1848276A1 EP 1848276 A1 EP1848276 A1 EP 1848276A1 EP 06706788 A EP06706788 A EP 06706788A EP 06706788 A EP06706788 A EP 06706788A EP 1848276 A1 EP1848276 A1 EP 1848276A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tetrazine
- aryl
- alkyl
- heteroaryl
- alkenyl
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
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- A61P31/10—Antimycotics
Definitions
- the present invention relates to substituted tetrazine derivatives - more specifically substituted hexahydro [1, 2,4,5] -tetrazine derivatives, synonymously also referred to as [1, 2,4,5] -tetrazinanes - and their use, in particular in the field of crop protection, medicine (human and veterinary medicine), pharmacy, hygiene and the like. More particularly, the present invention relates to tetrazine derivatives having, inter alia, antifungal activity (i.e., fungistatic and / or antifungal activity) and their use.
- antifungal activity i.e., fungistatic and / or antifungal activity
- Another object of the present invention is the use of the aforementioned tetrazine derivatives as active pharmaceutical ingredients (both in the field of human and veterinary medicine) and as active ingredients in crop protection products.
- compositions in particular pharmaceutical compositions or crop protection compositions, which in addition to at least one carrier (excipients) contain at least one of the aforementioned tetrazine derivatives.
- Another object of the present invention is the use of the aforementioned tetrazine derivatives for the manufacture of a medicament or a pharmaceutical composition for the curative and / or prophylactic treatment of diseases, in particular fungal diseases (mycoses); Infertility or fertility disorders; Cardiovascular and metabolic diseases, especially hyperlipidemia, such as
- Hypercholesterolemia and cardiovascular diseases such as arteriosclerosis (atherosclerosis), hypertension, apoplexy and infarcts, e.g. B. Heart attack.
- Mushrooms also called fungi, mycota or mycobionts, count - in contrast to the bacteria - to the eukaryotes.
- Eukaryotes are living organisms whose cells (Eucytes), in contrast to those of the so-called prokaryotes (Procytes) on have a cell nucleus delimited by nuclear envelope from the rest of the cytoplasm. The nucleus contains the genetic information stored in chromosomes.
- Fungi are not plant organisms, but like these they have a cell wall, cellulosic vacuoles, and a microscopically visible plasma flow. They contain no photosynthesis apparatus and are C-heterotrophic. They grow under aerobic conditions and gain energy through oxidation of organic substances. However, some representatives, such as yeasts, are facultative anaerobes and capable of producing energy through fermentation processes.
- Dermatomycoses are diseases in which certain types of fungi, especially dermatophytes, invade the skin and hair follicles.
- the symptoms of dermatomycoses include blisters, exfoliation, rhagades and erosion, usually associated with itching or eczema.
- Dermatomycoses can essentially be subdivided into the following four groups: dermatophytoses (eg, epidermophytia, favus, microspore, trichophytia), yeast mycoses (eg, pityriasis and other pyrogenic mycoses, candidiasis, blastomycosis, buses) Buschke's disease, torulosis, Piedra alba, torulopsidosis, trichosporosis), mold mycoses (eg aspergillosis, cephalosporidosis, phycomycosis and scopular isopidemias), systemic mycoses (eg chromomycosis, coccidiomycosis, histoplasmosis).
- dermatophytoses eg, epidermophytia, favus, microspore, trichophytia
- yeast mycoses eg, pityriasis and other
- the pathogenic and facultative pathogens include, for example, those from the group of the yeast Candida species (for example Candida albicans) and those from the family Pityrosporum.
- the involvement of Pityrosporum ovale in the development of psoriasis is discussed by experts. All areas of human skin can be affected by dermatomycoses. Dermatophytoses almost exclusively affect the skin, hair and nails. Yeast mycoses can also affect mucous membranes and internal organs, systemic mycoses regularly extend to whole organ systems.
- Such superinfections are found in a variety of dermatological diseases, eg. Atopic dermatitis, eczema, acne, seborrhoeic dermatitis or psoriasis.
- dermatological diseases eg. Atopic dermatitis, eczema, acne, seborrhoeic dermatitis or psoriasis.
- medical and therapeutic measures such. Radiotherapy or chemotherapy, drug-induced immunosuppression, systemic antibiotic treatment, as well as external chemical or physical influences (eg, environmental pollution, Smog) promote the occurrence of superinfections of the external and internal organs, especially the skin and mucous membranes. Although it is in some cases readily possible to combat superinfections by medication, but often unpleasant side effects occur.
- Candida albicans is best known as the main causative agent of vaginitis, which occurs in large parts of the female population at some point in the course of life. The mortality rate from systemic infections caused by this yeast in tumor patients, and in particular in neutropenic patients, is unacceptably high.
- Candida albicans has also become known as a serious causative agent of infections of the mucous membranes of HIV-infected people.
- the Candida infection of oropharynx or esophagus in HIV-positive patients is often the first manifestation of AIDS.
- mycoses other than other species such as C. tropicalis, C. lusitaniae and C. glabrata.
- These yeasts are also important pathogens of "opportunistic" mycoses in immunosuppressed patients.
- fungi are also important harmful organisms in the field of crop protection and material protection and here cause enormous damage.
- 162 most important infectious diseases of Central European crops, 83% are caused by fungi. The damages amount annually to billions.
- the object of the present invention is thus the provision of active substances which are suitable for a broad pharmacological application.
- substituted tetrazine derivatives of the general formula (I) described below possess a valuable and broad pharmacological and phytosanitary (active) spectrum and in particular have an efficient antifungal, in particular fungicidal and / or fungistatic action.
- the active compounds according to the invention also have other valuable pharmacological and phytosanitary effects and properties, which are described in more detail below and make the substances of the general formula (I) into valuable active ingredients, in particular for medicines and pesticides.
- the present invention accordingly provides, according to a first aspect of the present invention, tetrazine derivatives of the general formula (I)
- alkyl, alkenyl, alkynyl, aryl or heteroaryl in the context of the present invention in connection with the general formula (I) denotes in particular an alkyl, alkenyl, alkynyl, aryl or heteroaryl radical, which is substituted with one or more of the following groups or substituents: alkyl; alkenyl; alkynyl; aryl; heteroaryl; Halogen; -NH 2 ; -NHR with R is alkyl, aryl or heteroaryl; -NR 1 R "with R 1 and R", each independently, is alkyl, aryl or heteroaryl; -COOR with R as previously defined; -COR with R as previously defined, -OR with R as previously defined; -SR with R as previously defined.
- substituted tetrazine derivatives of the abovementioned formula (I) according to the present invention preferably correspond in particular to the tetrazine derivatives of the general formula (Ia)
- alkyl, alkenyl, alkynyl, aryl or heteroaryl in the context of the present invention in connection with the abovementioned formula (Ia) denotes in particular an alkyl, alkenyl, alkynyl, aryl or heteroaryl radical, which is substituted with one or more of the following groups or substituents: alkyl; alkenyl; alkynyl; aryl; heteroaryl; Halogen; -NH 2 ; -NHR with R is alkyl, aryl or heteroaryl; -NR'R "with R 'and R", each independently, is alkyl, aryl or heteroaryl; -COOR with R as previously defined; -COR with R as previously defined, -OR with R as previously defined; -SR with R as previously defined.
- tetrazine derivatives according to the invention of the above formula (I) including 1,4-diphenyl-hexahydro- [1,2,4,5] -tetrazine have a broad pharmacological and / or phytosanitary activity spectrum.
- tetrazine derivatives according to the invention of the above formula (I) including 1,4-diphenyl-hexahydro- [1,2,4,5] -tetrazine have a broad pharmacological and / or phytosanitary activity spectrum.
- antifungal or fungicidal and / or fungistatic action they can also be used for the curative and / or prophylactic treatment of a number of other diseases.
- the present invention - according to a further aspect of the present invention - is therefore also a composition, in particular a pharmaceutical composition or a
- a crop protection composition which, in addition to at least one carrier or excipient, contains at least one tetrazine derivative of the general formula (I) as hereinbefore defined, including 1,4-diphenyl-hexahydro- [1,2,4,5] -tetrazine.
- compositions according to the present invention which, in addition to at least one carrier or excipient, contain at least one tetrazine derivative of the general formula (Ia) as defined above, including 1,4-diphenyl-hexahydro- [1, 2,4,5] Tetrazin included.
- compositions according to the present invention which, in addition to at least one support or Excipients - 1, 4-diphenyl-hexahydro- [1, 2,4,5] -tetrazine of the formula (Ib), as defined above.
- the excipient should be selected to be compatible with the application and / or ingredients.
- a pharmaceutically acceptable carrier or excipient is selected which is compatible, in particular, application and / or compositionally related.
- composition according to the invention may, for example, be an antimycotic, in particular a fungicidal and / or fungistatic agent, which, in addition to a pharmaceutically acceptable carrier or excipient, contains at least one tetrazine derivative, as defined above, including 1,4-diphenyl- hexahydro [1, 2,4,5] tetrazine.
- an antimycotic is suitable for use in both human and veterinary medicine.
- Another object of the present invention - according to a still further aspect of the present invention - is the use of the tetrazine derivatives according to the present invention as defined above, including 1, 4-diphenyl-hexahydro- [1, 2,4,5] -tetrazine for curative and or prophylactic treatment of diseases or for the manufacture of a medicament or a pharmaceutical composition for the curative and / or prophylactic treatment of diseases.
- these may be the following diseases or clinical pictures which can be curatively and / or prophylactically treated with the compounds according to the invention, including 1,4-diphenyl-hexahydro- [1,2,4,5] -tetrazine, such as, for example, B.
- tetrazine derivatives according to the invention can in principle be carried out topically and / or systemically.
- Another object of the present invention is the use of the previously defined tetrazine derivatives according to the present invention including 1, 4-diphenyl-hexahydro- [1, 2,4,5] -tetrazine in the field of crop protection, medicine (human and veterinary medicine), pharmacy, hygiene and the like.
- Yet another object of the present invention is the use of the previously defined tetrazine derivatives according to the present invention including 1,4-diphenyl-hexahydro- [1,2,4,5] -tetrazine as active pharmaceutical ingredients (ie as pharmaceutical agents) or as active ingredients in Plant protection products (ie as phytosanitary agents).
- the tetrazine derivatives according to the invention including 1, 4-diphenyl-hexahydro- [1, 2,4,5] -tetrazine, can in principle be used topically and / or systemically.
- Yet another object of the present invention is the use of the previously defined tetrazine derivatives according to the present invention including 1, 4-diphenyl-hexahydro- [1, 2,4,5] -tetrazine in disinfectants, detergents, cleaning agents and the like or as an ingredient and / or active in disinfectants, detergents, detergents and the like.
- disinfectants, detergents, cleaning compositions and the like which contain the previously defined tetrazine derivatives according to the present invention including 1,4-diphenyl-hexahydro- [1,2,4,5] -tetrazine.
- tetrazine derivatives according to the present invention including 1, 4-diphenyl-hexahydro- [1, 2,4,5] -tetrazine contain disinfectants according to the invention, Detergents, cleaning agents and the like also per se conventional ingredients (eg, inter alia, surfactants in the case of detergents and cleaning agents, etc.); this is familiar to the skilled worker as such, so that need not be discussed in the context of the present invention on this.
- the tetrazine derivatives of the general formula (Ia) according to the invention including 1,4-diphenyl-hexahydro- [1,2,4,5] -tetrazine are preferably used and the compound 1,4-diphenyl-hexahydro [ 1, 2,4,5] -tetrazine very particularly preferred.
- the antifungal, in particular fungistatic and / or fungicidal action of the tetrazine derivatives according to the invention may possibly be due to an interaction in explain the ergosterol synthesis of fungi.
- Fungal ergosterol synthesis has proven to be a suitable target pathway for inhibiting growth of fungi by inhibiting individual reaction steps. Although some inhibitors are known to attack away at the most diverse sites in this metabolism, in particular only the azoles are in clinical use. These inhibit the enzyme sterol-14-alpha-demethylase in the conversion of lanosterol to ergosterol and consequently act fungistatically. Allylamines (terbinafine and naftifine) are used exclusively against dermatophytes. Their site of action is squalene epoxidase (Erg1), which blocks the conversion of squalene into lanosterol. Morpholine derivatives (amorolfin) are used topically only.
- PF1163A a novel antifungal agent, inhibit ergosterol biosynthesis at C-4 Sterol Methyloxidase
- C-4 Sterol Methyloxidase (Erg25)
- C-4 Sterol Methyloxidase is a very interesting one Target for the development of antifungal substances, however, this enzyme occurs not only in fungi but also in all higher organisms (including plants and humans).
- C-4 sterol-methyl oxidase is not only an interesting enzyme for the development of new antimycotics, but also as a target for the control of other human diseases of high interest, thereby increasing the other pharmaceutical or pharmacological effects of tetrazine derivatives of the invention including 1, 4 -Diphenyl-hexahydro- [1, 2,4,5] -tetrazin can be explained without wishing to be bound by any particular theory.
- inhibition of cholesterol metabolism between lanosterol and cholesterol may result in decreased cholesterol blood levels, making this pathway an interesting target for the development of atherosclerosis drugs.
- azoles for example ketoconazole
- AY9944-A-7 the inhibition of delta-14 reductase by the substance AY9944-A-7 leads to reduced cholesterol synthesis and finally to the lowering of the cholesterol concentration in the blood. This substance was used in the 1950s to lower blood cholesterol.
- C-4-Sterol-Methyloxidase catalyzes the reaction following the delta-14-reductase and represents another point of attack for the lowering of the cholesterol blood level.
- C-4 sterol methyl oxidase may accumulate hormones (or hormone-like substances) called meioseactivating sterols (MAS).
- MAS meioseactivating sterols
- a substance which consequently inhibits human C-4-sterol-methyloxidase and thereby leads to the accumulation of meiosis activating sterols therefore, represents a potential drug for the treatment of infertility.
- in vivo luteinizing hormone mediates the signal for the resumption of meiosis via communication channels such as "gap junctions" via the increased production of FF-MAS in the cumulus cells of the oocyte.
- FF-MAS but also T-MAS, stimulates the resumption of meiotic egg maturation in mouse and rat both in vitro and in the ex vivo perfused ovary in the presence of meio-inhibitors such.
- B. hypoxanthine The synchronization of meiotic division and cytoplasmic maturation of mouse oocytes, enhanced by FF-MAS culture, is accompanied by an improved in vitro fertilization rate.
- FF-MAS represents a new interesting method for the treatment of infertility in vitro.
- substances which Inhibiting enzyme steps in cholesterol synthesis downstream of the sterol 14-alpha-demethylase are very interesting as they can potentially improve the fertilization rate in the / nv / fro fertilization.
- they can be used to treat infertility caused by insufficient stimulation of meiosis in men or women.
- the tetrazine derivatives according to the invention described above including 1, 4-diphenyl-hexahydro [1, 2,4,5] -tetrazine, inter alia, antifungal, in particular fungistatic or fungicidal, and thus can be used to combat fungal infections be used.
- Preference is given to the use of the fungicides according to the invention for the inhibition of, among other things of human pathogenic fungi.
- Conceivable is the use of inventive fungicides against z.
- Trichophyton spp. Microsporum spp., Epidermophyton spp., Alternaria spp., Blastomyces dermatidis, Candida spp., Aspergillus fumigatus, Aspergillus niger, Aspergillus flavus, Aspergillus nidulans, Candida albicans, Candida dublinensis, Candida glabrata, Candida krusei, Candida lustaniae, Candida parapsilopsis, Candida tropicalis, Coccidiodes immitis, Paracoccidioides brasiliensis, Exophalia dermatiditis, Fusarium beigelii oxysporum, Histoplasma capsulatum, Pneumocystis carnii, Cryptococcus neoformans, Trichosporon, Trichophyton rubrum, Trichophyton mentagrophytes var interdigitale, Trichophyton mentagrophytes var granulosum, Trichoph
- the tetrazine derivatives according to the invention including 1, 4-diphenyl-hexahydro- [1, 2,4,5] -tetrazine can also be used for controlling phytopathogenic fungi. They are distinguished by outstanding activity against a broad spectrum of phytopathogenic fungi, in particular from the classes of the Ascomycetes, Deuteromycetes, Phycomycetes and Basidiomycetes. They are in part systemically effective and can be used in crop protection as foliar and soil fungicides.
- the tetrazine derivatives according to the invention are also suitable for controlling harmful fungi such as Paecilomyces variotii in the protection of materials (eg wood, paper, paint dispersions, fibers or tissue) and in the protection of stored products.
- the tetrazine derivatives according to the invention including 1, 4-diphenyl-hexahydro- [1, 2,4,5] -tetrazine can be used, for example, by the fungi or the plants, seeds, materials or the soil to be protected from fungal attack with a fungicidally active Treated amount of these agents. The application can be done both before and after the infection of the materials, plants or seeds by the fungi.
- tetrazine derivatives according to the invention including 1, 4-diphenyl-hexahydro- [1, 2,4,5] -tetrazine can also be present in the application form as fungicides together with other active ingredients, for. As with herbicides, insecticides, growth regulators, fungicides, etc., or with fertilizers. When mixing the substances according to the invention or the agents containing them in the application form as fungicides with other fungicides, enlargement of the fungicidal activity spectrum is obtained in many cases.
- tetrazine derivatives of the invention including 1, 4-diphenyl-hexahydro- [1, 2,4,5] -tetrazine against z.
- Puccinia recondita Puccinia striiformis, Tilletia caries, Tilletia controversa, Tilletia indica, Tilletia tritici, Tilletia foetida, Ustilago maydis, Ustilago hordeii
- the above list is to be understood only as an example and is not intended to limit the application of the invention in any case exclusively to the mushrooms mentioned.
- tetrazine derivatives according to the invention including 1, 4-diphenyl-hexahydro- [1, 2,4,5] -tetrazine inhibit the C-4-sterol-Methyloxidase, among others of fungi and therefore have antifungal or fungicidal.
- the tetrazine derivatives according to the invention including 1,4-diphenyl-hexahydro- [1,2,4,5] -tetrazine also inhibit the human C-4-sterol-methyloxidase and are therefore of interest for other fields of use in human medicine, as described above , Application, the tetrazine derivatives of the invention including 1, 4-diphenyl hexahydro [1, 2,4,5] tetrazine z. Both in the treatment of high blood pressure and atherosclerosis as well as in increasing the fertility of men and women or to improve the fertilization rate in the / ⁇ -fertilization fertilization.
- tetrazine derivatives of the invention including 1, 4-diphenyl-hexahydro [1, 2,4,5] -tetrazine can serve as a penetration enhancer.
- the tetrazine derivatives according to the invention including 1,4-diphenyl-hexahydro- [1,2,4,5] -tetrazine, reduce the epithelial barrier function of the skin and thus make it easier to penetrate topically administered active substances.
- 1,4-diphenyl-hexahydro- [1,2,4,5] -tetrazine reduce the epithelial barrier function of the skin and thus make it easier to penetrate topically administered active substances.
- the present invention has a number of advantages, some of which are outlined below:
- tetrazine derivatives of the present invention inhibit the growth of human pathogenic fungi and yeasts such as Candida albicans or Candida glabrata as well as the growth of non-human pathogenic fungi and yeasts such as about Saccaromyces cerevisiae.
- the tetrazine derivatives according to the invention including 1, 4-diphenyl-hexahydro- [1, 2,4,5] -tetrazine inhibit the growth z.
- B. the yeast form of Candida Albicans ZeWen and act in particular fungistatic.
- z. B the hyphal Growth form of Candida albicans, which represents the pathogenic growth form, the substances act fungicidal and thus fungicidal.
- the tetrazine derivatives according to the invention including 1, 4-diphenyl-hexahydro- [1, 2,4,5] -tetrazine thus do not act cytotoxic.
- tetrazine derivatives of the present invention do not inhibit the growth of bacteria (neither Gram positive, such as Bacillus subtilis, nor Gram negative, such as Escherichia coli). Thus, the bacterial balance of humans (intestinal flora, skin flora, oral flora, etc.) is not disturbed by both systemic and topical application.
- tetrazine derivatives according to the invention including 1,4-diphenyl-hexahydro- [1,2,4,5] -tetrazine inhibit C-4-sterol-methyloxidase.
- inhibiting substances for this enzyme which are used in any way as "antifungals” (neither in clinical use nor in plant protection). It is therefore a substance class with a completely new target, which is of particular importance in combating already resistant pathogenic organisms (eg resistance to azoles).
- a Candida albicans strain strain (SC5314) is grown overnight in YEPD 3 medium (1% Yeast Extract, 1% peptone, 3% dextrose). Fresh YEPD 3 medium is inoculated with 10 4 cells / ml. Each 150 ul of this Zeil / medium suspension are placed in a 96-well microtiter plate.
- 1, 5 .mu.l of different solutions of 1, 4-diphenyl-hexahydro- [1, 2,4,5] -tetrazine are pipetted in each case in duplicate (stock solutions 3200 .mu.g / ml DMSO, 1600 .mu.g / ml DMSO, 800 .mu.g / ml DMSO, 400 ⁇ g / ml DMSO, 200 ⁇ g / ml DMSO, 100 ⁇ g / ml DMSO, 50 ⁇ g / ml DMSO, 25 ⁇ g / ml DMSO, 12.5 ⁇ g / ml DMSO, 6.25 ⁇ g / ml DMSO).
- the control is DMSO without dissolved substance. After incubation for 48 h at 30 ° C., the growth in the individual wells is evaluated on a photometer (OD 590 nm).
- the minimum inhibitory concentration is the 1,4-diphenyl-hexahydro [1, 2,4,5] -tetrazine final concentration, which does not detect any growth of Candida albicans. For Candida albicans in YEPD 3 medium, this is 8 ⁇ g / ml (equivalent to 33 ⁇ M).
- the effect of the substance is fungistatic in the concentrations and media tested above, since residual growth is observed after prolonged incubation even at the highest concentration.
- FCS fetal calf serum
- RPMI Roswell Park Memorial
- the MIC for Candida albicans is 2 ⁇ g / ml (corresponding to 8.3 ⁇ M), which is significantly lower than in the non-hyphae-inducing YEPD 3 medium.
- a Candida albicans ⁇ NMtyp strain (SC5314) is grown overnight in YEPD 3 medium (1% Yeast Extract; 1% peptone, 3% dextrose). Fresh RPMI medium is inoculated at 3.3 - 10 3 cells / ml. Each 150 ul of this cell / medium suspension are placed in a 96-well microtiter plate (each cavity contains about 500 cells).
- Table 1 shows the inactivation assay as the number of colony-forming cells as a function of the substance incubation period.
- HaCaT cells / 96-well wells are seeded in 100 ⁇ l culture medium (Hanks 1 basal medium, 2 mM L-glutamine, 5% (v / v) fetal calf serum) and incubated for 24 h.
- the medium is removed, the cell lawn washed once with phosphate buffered saline (PBS) and incubated for 24 h with culture medium containing the substance concentrations to be tested (100 ⁇ M final concentration).
- PBS phosphate buffered saline
- 20,000 HeLa cells / 96-well-cavity are seeded in 100 ul culture medium (DMEM medium, 10% (v / v) fetal calf serum) and incubated for 24 h.
- the medium is removed, the cell lawn washed once with phosphate buffered saline (PBS) and incubated for 24 h with culture medium containing the substance concentrations to be tested (100 ⁇ M final concentration).
- PBS phosphate buffered saline
- 20,000 MM6 cells / 96 ⁇ l cavity are dissolved in 100 ⁇ l culture medium (RPMI medium, 10 ⁇ g / ml insulin, MEM non-essential amino acids, 1 mM sodium pyruvate, 1 mM oxaloacetate, 2 mM L-glutamine, 10% (v / v ) fetal calf serum) and incubated for 24 h.
- the medium is removed, the cells washed once with phosphate buffered saline (PBS) and for 24 h with culture medium containing the substance concentrations to be tested (100 ⁇ M final concentration), incubated.
- PBS phosphate buffered saline
- 20,000 cells / 96-well-cavity are seeded in culture medium as in A) and incubated for 24 h.
- the medium is removed, the cells are washed once with phosphate buffered saline (PBS) and incubated for 24 h with culture medium containing the substance concentrations to be tested (100 ⁇ M final concentration).
- 10 ⁇ l of WST1 reagent (Roche, Cat No 1644807) are added to the culture medium and the cells are incubated for 1 h under culture conditions.
- the plate is shaken thoroughly and the absorbance at 450 nm measured against a reference of 620 nm.
- the substance 1, 4-diphenyl-hexahydro- [1, 2,4,5] -tetrazine acts on all tested Zeil lines neither proliferation inhibiting nor worsens the vitality of cell cultures. The substance thus does not act cytotoxic on cell cultures.
- Figure 2 shows the vitality or proliferation in% compared to untreated control cultures.
- Bacillus subtilis and Escherichia coli DH ⁇ alpha are grown overnight in LB medium (1% peptone, 0.5% yeast extract, 0.5% NaCl) medium. Fresh LB medium is inoculated with about 10 3 cells / ml. Each 150 ul of this cell / medium suspension are placed in a 96-well microtiter plate.
- the control is DMSO without dissolved substance. After incubation for 48 h at 30 ° C., the growth in the individual wells on the photometer (OD 590 nm) is evaluated. 1, 4-Diphenyl-hexahydro- [1, 2,4,5] -tetrazine does not inhibit the growth of Bacillus subtilis and Escherichia coli at any of the concentrations tested.
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Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102005007739A DE102005007739A1 (de) | 2005-02-18 | 2005-02-18 | Tetrazinderivate mit antimykotischer Wirkung und ihre Verwendung |
| PCT/EP2006/001153 WO2006087135A1 (de) | 2005-02-18 | 2006-02-09 | Tetrazinderivate mit antimykotischer wirkung und ihre verwendung |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1848276A1 true EP1848276A1 (de) | 2007-10-31 |
Family
ID=36264180
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP06706788A Withdrawn EP1848276A1 (de) | 2005-02-18 | 2006-02-09 | Tetrazinderivate mit antimykotischer wirkung und ihre verwendung |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1848276A1 (de) |
| DE (1) | DE102005007739A1 (de) |
| WO (1) | WO2006087135A1 (de) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3086016A (en) * | 1961-03-21 | 1963-04-16 | Callery Chemical Co | Process for production of cyclic tetrazines |
| CH403784A (de) * | 1962-01-23 | 1965-12-15 | Wander Ag Dr A | Verfahren zur Herstellung eines Phenäthylhydrazinderivates |
| EP0029657A3 (de) * | 1979-11-16 | 1981-08-26 | Fbc Limited | Pestizide Tetrazine, ihre Verwendung und Zusammensetzungen, Verfahren zu ihrer Herstellung und Zwischenprodukte zu deren Herstellung |
-
2005
- 2005-02-18 DE DE102005007739A patent/DE102005007739A1/de not_active Ceased
-
2006
- 2006-02-09 WO PCT/EP2006/001153 patent/WO2006087135A1/de not_active Ceased
- 2006-02-09 EP EP06706788A patent/EP1848276A1/de not_active Withdrawn
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2006087135A1 * |
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| Publication number | Publication date |
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| WO2006087135A1 (de) | 2006-08-24 |
| DE102005007739A1 (de) | 2006-08-24 |
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