Method of producing derivatives of bis-triazole

专利摘要:
Triazoles of the formula:- where R is phenyl optionally substituted by 1 to 3 substituents each independently selected from F, Cl, Br, I, CF3, C1-C4 alkyl and C1-C4 alkoxy, or R is 5-chloto-pyrid-2-yl; and R1 is H, CH3 or F; and their pharmaceutically and agriculturally acceptable salts. The compounds are useful as human and agricultural fungicides.
公开号:SU1405701A3
申请号:SU843707401
申请日:1984-02-24
公开日:1988-06-23
发明作者:Ричардсон Кеннет；Эдвард Джимер Жоффрей
申请人:Пфайзер Корпорейшн (Фирма)；
IPC主号:

专利说明:

ate h
 cm
The invention relates to a process for the preparation of new bis-triazole derivatives which have antifungal activity, of the general formula
OH RI
.
K N-CHg-C-C-N
N
R r n
where R is 4-fluoro-54-chloro, 2,4-difluoro2, 4-dichlorophenyl j H, CHg or F.
The aim of the invention is a method for producing new antifungal compounds with improved properties.
Example 1
Process A. 1, 2 - bis (1H-1, 2,4-Tpiazol-l-yl) -2- (2 4-diphloprophenyl) -l-fluoropropan-2-o (mixture of two diaste-O reoisomers pairs).
A mixture of sodium hydride (21 mg of a 60% dispersion in oil, 0.54 mmol of hydri, sodium hydroxide) and 143 mg (0.65 mmol of trimethyl sulfonium iodide is stirred in a dry nitrogen medium and anhydrous dimethyl sulphoxide (4 ml}, 40 minutes later, 4 ml of anhydrous tetrahydrofuran are added to the solution and the mixture is cooled to. A solution of 2- (lH-i, 254-triazol-1-yl) -2,2,4-trifluoroacetophenone (130 mg; 0.54 mmol) in tetrahydrofuran (3 ml) and the temperature is slowly raised to room temperature. Then water (10 ml) and ether (50 ml) are added. The ether layer is separated, dried over magnesium sulfate and by evaporation an epoxide intermediate (A) is obtained as a resin. 1,2,4-triazole (112 mg; 1.62 mmol), anhydrous potassium carbonate (223 mg; 1.62 mmol) and anhydrous dimethylformamide are added. (4 ml), the mixture is stirred and heated to 70 ° C for 2 hours. The mixture is cooled, water (50 ml) is added and extracted with methylene chloride (2 X 50 ml). Combined evaporation of the combined chloromethylene extracts with X-shol a resin is obtained which contains the crude product as a mixture of two diastereoisomer pairs. The resin is subjected to chromatography on a silica gel column, eluting with a 4% (by volume) mixture of methanol, in methylene chloride. Subsequent scaling
0
five
0
five
five
0
five
0
five
the collected product-containing fractions obtained the title compound as a colorless substance (72 mg; 41%), which, after crystallization, from a mixture of ethyl acetate and cyclohexane has so pl. 142-145 s. The compound is a mixture of two diastereoisomeric pairs in an approximate 4: 1 ratio.
Found,%: C 48.3; H 3.5; N 25.6.
.
Calculated,%: C 48.2; H 3.4; N 25.9.
Process B. Partial separation of two .diastereomeric 1,3-bis (1H-1, 2,4-triazol-yl) -2- (2,4-difluorophenyl) -1-fluoropropan-2-ol- pairs.
A mixture of sodium hydride (406 mg of a 60% dispersion in oil, 10.17 mmol of sodium hydride) and trimethylsulfoxoni (2.68 g, 12.20 mmol) is stirred under dry nitrogen and anhydrous dimethyl sulfoxide (40 ml) is added. ). After 30 minutes, anhydrous tetrahydrofuran (40 ml) was added to the solution and the mixture was cooled to. To the mixture is added a solution consisting of 2- (1H-1,2,4-triazol-1-yl) -2,2, 4-triacetophenone (2.45 g; 10, 17 mmol). in tetrahydrofuran (30 ml), and the temperature is slowly raised - until. Water (50 ml) is added and the mixture is extracted with three equal parts (60 ml) of ether. The combined ether layers are dried over MgSO4 and evaporation affords the epoxide intermediate (A) as a semi-crystalline precipitate. 1, 2,4-triazole (3.51 g; 50.85 mmol), anhydrous potassium carbonate (7.0 g; 50.85 mmol) and anhydrous dimethylformamide (40 ml) are added, the mixture is stirred for 18 h, heating up to 70 s. The mixture was cooled, water (1 00 ml) was added and extracted with methylene chloride (3 x 60 ml). After drying the combined chloromethylene extracts over N§864 by co-evaporation with xylene, a gum is obtained. This resin is chromatographed on KOfioHKe with silica gel, eluting with a 3% mixture of methanol in methylene chloride, followed by elution with 4% methanol in methylene chloride. Two diastereoisometric pairs were eluted with a clean, undivided appearance. The collected and evaporated product-containing fractions gave the title compound as a colorless precipitate (1.1 g, 33%). Chrome.
A high-pressure liquid (HEDG) chart shows that the product is a mixture of two diastereoisomeric pairs in an approximate 4: 1 ratio.
Crystallization of this mixture of isomers from a solution containing ethyl acetate (20 ml) and hexane (30 ml) gives the first pure diastereoisomeric dimensional pair as a colorless precipitate (688 mg) with mp 49-150 C.
WmSylenD: C 48.2; H 3.4; N 25.9.
C ,, H ,, FjN, 0.
Found,%: C 48.0; H 3.4; N 25.9. is
By concentrating the crystallization liquids, a second group of crystals (88 mg) with a mp. 17-1 23 sec. Chromatography with high pressure liquid shows that they are a mixture of two diastereoisomer pairs in an approximate ratio of 1s5.
Calculated,%: C 48.2; H 3.4; N 25.9.
Found,%: C 48.0; H 3.5; N 26.0. 25
By replacing the last crystallization liquids, a resin (170 mg) is obtained 5 by high pressure liquid chromatography shows that the resin contains two diastereoisoneric pairs in an approximate ratio of 1: 1.
PRI mme R 2. Complete separation of two diastereomeric pairs of 1,3-bis 1H-1,2,4-triazol-1-yl) -2- (2,4-diphosphoryl) -1-fluoropropane-2 a-la
1S 3-bis (1H-1,2,4-Triazol-1-yl) -2- (2 ,, 4-difluorofensh1) -1-fluoropropan-2-ol (170 mg) as a mixture of diastereoisomeric pairs in an approximate ratio . 40 at 1: 1 according to Example 1 (Process B) is dissolved in methylene chloride
35
Example
Rf I T.nn.i cl Amal a, (Maidano / Itislepa) JIC JN N
 114-
I am too-gog “h ,, 7 ei / s, 1 22.9 / 23.5
1 0-4i, 1M.1Z.g / 3,123.4 / 23,5
CHj 13 "-145, t / 4", "З.в / 3, в24.6 / 24.8
s
about
five
ABOUT
0
five
(1 ml) and then adsorbed in a column (2 X 30 cm) on Merck-silica gel (230-400 mesh) prepared in a mixture consisting of hexane: isopropanol: acetic acid (60: 40: 2), Elute 500 ml of the same solvent at a moderate pressure (5 pounds per KB.inch) to obtain a complete separation of the diastereoisomeric pairs. By evaporation of the solvent, isomers are obtained in the form of colorless precipitates (ethyl acetate is used as eluent for repeating this process).
Diastereoisomeric pair, fiery first (80 mg): crystallization from a mixture of ethyl acetate and hexane gives a crystalline precipitate with mp. US-ISO C.
Calculated,%: C 48., 2; H 3.4; N 25.9.
.O
Found,%: C 48.0; H 3.4; N 25.9.
Second Diastereomeric couple (70 mg): crystallization from a mixture of ethyl acetate and hexane gives a crystalline precipitate with mp. 137-139 0.
Calculated,%: C 48.2; H 3.4; N 25.9.
C jH FjNgO
Found,%; C 48.4; H 3.5; N 25.7.
Examples 3-6. The compounds were prepared analogously to example 1 (process A) from the corresponding starting materials 1 using chlorine methylene, which contained (by volume) 2% isopropyl alcohol and 0.2% ammonia (sp. Weight, O, 880), and crystallization a product of a mixture of ethyl acetate and petroleum ether (bp 60-80 ° C).
Characteristics of the compounds in examples 3-6 are presented in table.1.
Table
41.3 / 48, "
3.7 / 3.7
25.8 / 26.0
-t
50, / 50, S
4.1 / 3.9
26.7 / 27.4
In examples 3-6, the separation of diaz. tereoisomers not achieved. In Example 5, a partial separation occurs. First, one pure diastereoisomer is eluted, which crystallizes from a mixture of ethyl acetate and petroleum ether (k.b.Ob.c), mp. . 200-202. Thereafter, a mixture of diastereoisomers is eluted, which crystallizes from a mixture of ethyl acetate and petrol ether (b.p. OO C), m.p. leO-lSA C.
Example 7.iJ2- (H-1,2,4-Three10
The mixture is dimethylformamide (5 ml), potassium carbonate. (200 ig) and I, 2, D-triazole (200. Mg), up to. The reaction mixture is then cooled, combined with water (30 ml) and extracted with ethyl acetate (3 x 15 ml). The combined organic extracts are washed with brine (2 x X 5 ml), dried (MgSO4) and evaporated to an oil (235. Mg).
Flash chromatography of this resin on silica gel using methylene for icnopHCToro containing aazol-1-yl) -2,2,2, 4-tetrafluoroacetate-15 isopropanol (10% by volume) and phenone. Ammonium hydroxide (sp. weight 0,880,
2- (1H-, 2,4-triazol-1-yl) -2.2-4- 1% by volume), 53 mg of reagestrifluoroacetophenone (l60 mg) are obtained, treated with sodium ether hydride (25 mg) in dry tetrahydrofuran. (5 ml), forming an orange solution. When the solution is vented under an atmosphere of chloric acid fluoride, a fast yellow suspension forms with the rapid absorption of this chemical. Tetrahydrofuran is removed with reduced Found: C 45.6; H 3.0; N 24.3.
pressure, the residue is partitioned between the NMR spectrum (CDCl1) c /: 4.77 (d ,.
water (10 ml) and ethyl acetate (10 ml, H, 1. 14 Hz); 5.39 (d, 1H,); the organic layer is dried (MgSO4) SO 6.1 (6s, 1H); (t, 2H); 7.44 (dd,
on Rr 0.3 (in the same dissolving System), which solidifies in the ether
20 re to form a powder. Crystallization of this precipitate from a mixture of cyclohexane and ethyl acetate gives colorless crystals of the title compound with mp. 132-1ZZ S.
25 Calculated,%: 45.7; H 2.9; N 24.6 C ,.
1H, Hz, 7H); 7.73 (s, lH); 7.82 (s, IH); 7.10 (s, lH); 8.32 (s, lH) .. (e 343, M + l).
and evaporation gives the title compound as an oil (127 mg).
NMR spectrum (CDCl1): 6.95 (t; 2H); 8iO (s, lH); 8.2 (m); 8.69 (s, .lH). I ii 1,3-bis (.1H-1,2,4-Triazol-1 - i yl) -2- (2,4-difluorophenyl) -. 1, 1-difluoro- | propan-2-ol.
Process A. From trimethylsulfoxony iodide (0.44 g) and sodium hydride (0.12 g of a 50% suspension in may-40 xonies (1.2 g) and sodium hydride
le) in dry dimethylsulfoxide (lOMjj) dimethyloxosulfoxonium methylide is prepared. Dry tetrahydrofuran (10 ml) was added thereto and the mixture was cooled to -40 ° C. Neutralized 2- (1H-1,2,4-triazral-1-yl) -2.2,2.4-tetrafluoroacetophenone (0 , 52 g) is added to dry tetrahydrofuran (5 ml). The mixture is stirred for 10 minutes at, then the temperature is raised to -10 ° C for 15 minutes, the mixture is placed on ice (100 g) and extracted with ethyl acetate (2 x 50 ml). The combined ethnyl acetate extracts were washed with brine (2 x 10 ml), dried (MgSO4) and evaporated to give oxirane (B) as an oil (240 mg). Oil heated for 3 h 45
(0.3 g of a 50% dispersion in oil of dimethyl sulfoxide (20 ml). Dry tetrahydrofuran (30 ml) is added and the mixture is cooled to -35 C. 2- (1H2, 4-Triazole-1-sh1) -2.2 , 2, 4 -tert. Fluoroacetophenone is added to tetraofuran (5 ml), the mixture is stirred at -ZO C for 15 min; therefore, the temperature is raised to 15 min for 15 min, the mixture is stirred at -10 ° C for 30 min. the temperature is then maintained for 15 minutes. At this stage, 1,2,4-triazole (1 gg and anhydrous potassium carbonate (1.0 and added for 3 hours) is added to the mixture and then stirred at room temperature overnight. After this reaction hydrochloric mixture was placed in a water
50
The mixture is dimethylformamide (5 ml), potassium carbonate. (200 ig) and I, 2, D-triazole (200. Mg), up to. The reaction mixture is then cooled, combined with water (30 ml) and extracted with ethyl acetate (3 x 15 ml). The combined organic extracts are washed with brine (2 x X 5 ml), dried (MgSO4) and evaporated to an oil (235. Mg).
Flash chromatography of this resin on silica gel using for methylation of icnopHCToro methylene containing isopropanol (10% by volume) and ammonium hydroxide (specific weight: 0.880,
1% by volume), receive 53 mg of the substance
Found: C 45.6; H 3.0; N 24.3.
on Rr 0.3 (in the same dissolving System), which solidifies in the ether
re to form a powder. Crystallization of this precipitate from a mixture of cyclohexane and ethyl acetate gives colorless crystals of the title compound with mp. 132-1ZZ S.
Calculated,%: With 45.7; H 2.9; N 24.6. WITH,.
H, 1. 14 Hz); 5.39 (d, 1H,); 6.1 (6s, 1H); (t, 2H); 7.44 (dd,
1H, Hz, 7H); 7.73 (s, lH); 7.82 (s, IH); 7.10 (s, lH); 8.32 (s, lH) .. (e 343, M + l).
Process B. This process is an alternative; the direction of the process A. In this direction of the process, oxycran (B) is not allocated.
Methyl dimethyl oxosulfoxoni prepared from trimethylsulfo iodide 5
(0.3 g of a 50% dispersion in oil) in dimethyl sulfoxide (20 ml). Add -; dry tetrahydrofuran (30 ml) and the mixture is cooled to -35 C. 2- (1H1, 2,4-Triazol-1-sh1) -2,2,2, 4-tetrafluoroacetophenone is added to tetrahydrofuran (5 ml), in the mixture is stirred at -ZO C for 15 minutes; then for 15 minutes the temperature is raised to, the mixture is stirred at-° C for 30 minutes, then: for 15 minutes the temperature is raised to. At this stage, 1,2,4-triazole (1.0 g) g and anhydrous potassium carbonate (1.0 g) are added to the mixture and heated for 3 hours to then stirred at room temperature overnight. After that, the reaction mixture is placed in water
0
(150 ml) and extracted with ethyl acetate (3x100 ml). The combined organic extracts are dried (MgSO4), evaporated to an oil (1.6 g and flash chromatography upon elution of the mixture. Methylene chloride: isopropanol: ammonia (unit weight 0.880) 90:10,: by volume is obtained after evaporation the corresponding fractions are crystalline precipitate (447 mg). By recrystallization of this precipitate from a mixture of cyclohexane and ethnyl acetate, colorless crystals are obtained with a mp, identical to the product of process A.
PRI me R 8. 1,3-bis (1H-1,2,4 Tpiazol-l-sh1) -2- (2,4-dichlorofensh1) -1, 1-difluoropropan-2-ol ,, t .pl. 155-6 C, are prepared as in Example 7 (Process B) from the corresponding starting materials.
Found,%: C 41.8; H 2.7; N 2.2.5,
C ,, H, C1,, F2NO.
Calculated,%: C 41.6; H 2.7; N 22.4.
The starting ketone 2, 4 dichloro-2, 2-difluoro-2 -, (1H-1,2,4-triazole) -1-acetophenone, is prepared in the same way as in example 7, part Ci 1 as an oil .
CNR spectrum (CDCl1) f: 7.3 (m; 3N); 7.55. (S, IH); 7.8 (s, IH).
il p and M e p 9. (2,4-Difluoro phenyl) -3-fluoro-3-OH-1, 2,4-tr yazol-1-sh1) -prop-1-en. .
2- (1H-1,2,4-Triazol-1-yl) -2,2, 4-trifluoroacetophenone (10 g), anhydrous potassium carbonate (7.3 g) and methyltriphenylphosphonium bromide (15.5 g) for 16 hours is heated to boiling using a reflux condenser in 1,4-dioxane (250 ml), to which water (1.0 g) is added.
When thin layer chromatography (silica gel, eluting with ether) indicates that no starting material remains, additional is added. the amount of methyltriphenylphosphonium bromide (0.74, g), and heating continued for another 1 hour. When a precipitate of inorganic substance n triphenylphosphine oxide is formed, dioxane is removed under reduced pressure and the dark brown residue is ground to powder in ether (150 ml) . The ether solution is decanted With a precipitate, the precipitate is washed with ether (100 ml) and the washing solutions are added to the decantro. bath essential solution. Connected0
five
five
0
five
0
S
0
five
The ether solutions are evaporated to a dark brown oil (20.0 g).
The oil is chromatographed on silica gel (150 g), eluting with ether. The fractions containing the product (based on the results of thin layer chromatography) are combined and evaporated to the title compound as an amber oil (9.6 g),
NMR spectrum (CDCla). 5.78 - (dd, 1H, Hz, 2.Hz); 6.03 (d, 1H, Hz); 7.0 (in, 4H); 7.9. (s, IH); 8.25 (s, IR) ..
, 3-bis (1H-1,2,4-Triazol-1-yl) -2- (2,4-difluorophenyl) -1-fluoropropane-2-SL.
2- (2,4-Difluorophenyl) -3-fluoro-3- (1H-I, 2,4-triazol-1 yl) prop-1-ene (0.5 g) mgta-chloroperbenzoic acid (10.8 d) (MHPBK) and the radical inhibitor 3,3-di-t-butyl-4,4-dioxy-5,5-dimethyldiphenylsulfide (0.11 g) is heated to boiling using reflux in dichloroethane (75 ml). NMR spectral analysis of an aliquot portion of the reaction mixture shows the residue of a certain amount of the starting material, therefore additional amount of meta-chloroperbenzoic acid (3.5 g) is added. 3 The reaction mixture is heated for an additional hour. After cooling and filtering, remove the meta-chlorobenzoic acid. The reaction mixture is diluted with methylene chloride (150 ml), washed with 10% sodium bisulfite solution (2 x 50 ml) and then with saturated sodium bicarbonate solution (2 x 100 ml). After that, the organic LAY was washed with a saturated solution of sodium chloride (2 x 50 ml) IpoM dried (MgSO4.) And evaporated to an oil (7.7 g).
NMR spectral analysis of this oil shows that it contains epoxy as a mixture of two diastereomeric pairs in a 3: 2 ratio together with another organic residue. The overall yield of the epoxide, as determined, is about 50%. The crude reaction product was reacted with 1,2,4-triazole (7.5 g) and potassium carbonate (7.5 g) in dimethylformamide (100 ml) at 70 ° C overnight. Then the reaction / l mixture is cooled, diluted with 300. water and extracted with ethyl acetate (3 h 1 00 ml). Organic extract promyshcht on
A saturated solution of sodium chloride (2 X 50 ml), dried (MgSO4) and evaporated to a dark brown oil (4.8 g). The oil is chromatographed on silica gel (200 g), eluting first with ethyl acetate (1.5 L) and then ethyl acetate containing 5% isopropanol, with a gradual increase in its content to 20% (by volume). As a thin layer chromatography shows, the later fractions contain the desired product, they are evaporated to a white precipitate (1.4 g), which is triturated in ether to a powder to give a white solid, (1.5 g) so pl. 38-1. The identity of the second diastereomeric pair isolated in Example 2 was spectroscopically confirmed for this substance.
Antifungal in vitro activity of the compounds is assessed by determining the MPK. test compounds in an environment in which a culture of a specific microorganism cannot be found. A series of agar-coated petri worms, in which a test compound is administered at a specific concentration, is seeded with a standard Candida albicans culture, and each petri dish is then kept in a thermostat for 48 hours. Then, the petri dishes are examined to determine the presence or absence of a fungal culture. , and the corresponding value MPPK notes. Other microorganisms used in such tests may include Cryptococcus neoformans, Aspergillus fumigatuSj-Trichop hyton spp. 5 Microsporum spp., Epi dermophyton floccosum, Coccidioides immitis u Torulopsis glabrata.
Evaluation of the antifungal activity of the target compounds in vivo is carried out in a series of dose levels when administered, by intraperitoneal or intravenous injection or through the digestive tract, to the strain of Candida albicans. Activity is judged by invasion after 48 hours of a group of mice exposed to the test compound after the death of a group of mice that were not exposed to the compound. The dose level at which the compound provides 50% protection against
,
140570140
h lethal effect from the injection (D 3JP).
Evaluations in mice identified5
Candida albicans, for the proposed agae1 / mym compounds are presented in table 2
T a b l and c a. 2
2 (first diastereoisomer pair)
2 (second diastereomer isomer pair)
5 (mixture of diastereoisomers)
5 (highlighted diaste0, 29
0.2
one
0.13
20
45

权利要求:
Claims (1)
[1]
Formula invented
The method of obtaining derivatives
bis-triazole of General formula
HE
where R is A-fluoro-, 4-chloro-, 254-difluoro-, 2,4-dichlorofensh1; H, CH, or F,
characterized in that the oxirane of the general formula
and 1405701 2
g. Q, 4-triazole in the presence of a base,
1 / or with 1,2,4-triazode taken in N – C – C CH 2 D basic salt, followed by I, D B 5 D of the desired product and / or
  optionally, with the division into where R and Rf have the indicated values, the diastereomeric pairs are chromatographed or reacted with 1,2, ki.

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引用文献:

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法律状态:

优先权:

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申请号 | 申请日 | 专利标题

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GB838305377A|GB8305377D0|1983-02-25|1983-02-25|Antifungal agents|

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