CZ303422B6 - Epothilon C, zpusob jeho výroby a jeho použití jako cytostatik a prostredku pro ochranu rostlin - Google Patents
Epothilon C, zpusob jeho výroby a jeho použití jako cytostatik a prostredku pro ochranu rostlin Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D417/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C07D415/00
- C07D417/02—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C07D415/00 containing two hetero rings
- C07D417/06—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C07D415/00 containing two hetero rings linked by a carbon chain containing only aliphatic carbon atoms
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- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/72—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with nitrogen atoms and oxygen or sulfur atoms as ring hetero atoms
- A01N43/74—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with nitrogen atoms and oxygen or sulfur atoms as ring hetero atoms five-membered rings with one nitrogen atom and either one oxygen atom or one sulfur atom in positions 1,3
- A01N43/78—1,3-Thiazoles; Hydrogenated 1,3-thiazoles
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/90—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having two or more relevant hetero rings, condensed among themselves or with a common carbocyclic ring system
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N63/00—Biocides, pest repellants or attractants, or plant growth regulators containing microorganisms, viruses, microbial fungi, animals or substances produced by, or obtained from, microorganisms, viruses, microbial fungi or animals, e.g. enzymes or fermentates
- A01N63/20—Bacteria; Substances produced thereby or obtained therefrom
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P35/00—Antineoplastic agents
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P35/00—Antineoplastic agents
- A61P35/04—Antineoplastic agents specific for metastasis
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P43/00—Drugs for specific purposes, not provided for in groups A61P1/00-A61P41/00
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D493/00—Heterocyclic compounds containing oxygen atoms as the only ring hetero atoms in the condensed system
- C07D493/02—Heterocyclic compounds containing oxygen atoms as the only ring hetero atoms in the condensed system in which the condensed system contains two hetero rings
- C07D493/04—Ortho-condensed systems
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- C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
- C12P17/00—Preparation of heterocyclic carbon compounds with only O, N, S, Se or Te as ring hetero atoms
- C12P17/16—Preparation of heterocyclic carbon compounds with only O, N, S, Se or Te as ring hetero atoms containing two or more hetero rings
- C12P17/167—Heterorings having sulfur atoms as ring heteroatoms, e.g. vitamin B1, thiamine nucleus and open chain analogs
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
- C12P17/00—Preparation of heterocyclic carbon compounds with only O, N, S, Se or Te as ring hetero atoms
- C12P17/18—Preparation of heterocyclic carbon compounds with only O, N, S, Se or Te as ring hetero atoms containing at least two hetero rings condensed among themselves or condensed with a common carbocyclic ring system, e.g. rifamycin
- C12P17/181—Heterocyclic compounds containing oxygen atoms as the only ring heteroatoms in the condensed system, e.g. Salinomycin, Septamycin
Abstract
Predložený vynález se týká epothilonu C uvedeného vzorce, zpusobu jeho prípravy, prostredku pro ochranu rostlin a terapeutického prostredku pro použití jako cytostatikum s jeho obsahem.
Description
Oblast techniky
Předložený vynález se týká epothilonu C, jeho výroby, jakož i jeho použití ke zhotovení terapeutických prostředků a prostředků k ochraně rostlin.
Dosavadní stav techniky
Dosud byla vyvinuta řada epothilonu, viz například Nicolaou et al., Angew. Chem. Int. Ed. Engl., (1996) 35(20), 2399-2401. V mezinárodní patentové přihlášce WO-A-93/10121 jsou popsány epothilony A a B, od nichž se epothilon C liší chybějícím epoxidovým kruhem. Jak bylo zjištěno, tato odlišnost vede k překvapivě lepším vlastnostem uvedené sloučeniny.
Podstata vynálezu
Předmětem vynálezu je epothilon C vzorce
(Epothilon C R = H), kde Me je methyl.
Tuto sloučeninu lze získat tím, že se (a) Sorangium cellulosum DSM 6773 o sobě známým způsobem kultivuje adsorpění pryskyřice, v přítomnosti (b) adsorpční pryskyřice se oddělí od kultury a promyje směsí voda/methanol, (c) promytá adsorpční piyskyřice se eluuje methanolem a eluát se zahustí na surový extrakt, (d) získaný koncentrát se extrahuje ethylacetátem, extrakt se zahustí a rozdělí mezi methanol a hexan, (e) methanolická fáze se zahustí na rafinát a tento koncentrát se frakcionuje na sloupci Sephadexu, (f) získá se frakce s produkty metabolismu použitého mikroorganismu, (g) získaná frakce se chromatografuje se směsí methanol/voda na C18-reverzní fázi a v časovém pořadí postupně
- po první frakci s epothilonem A a
- druhé frakci se epothilonem B se získá
- třetí frakce s prvním dalším epothilonem a
- čtvrtá frakce s druhým dalším epothilonem a izoluje se (hl) epothilon z první další frakce a/nebo
- 1 CZ 303422 B6 (h2) epothilon z druhé další frakce.
Předmětem vynálezu je dále epothilon C sumárního vzorce C26H39NO5S, charakterizovaný ]H- a 13C-NMR spektrem podle tabulky 1.
Epothilon C může být použit pro přípravu sloučenin následujícího vzorce 1, přičemž pro jeho derivatizaci se může odkazovat na derivatizační metody, které jsou popsány v WO-A-97/19086.
(1)
V uvedeném vzorci 1 značí:
R = H, Ci^-alkyl;
R1, R2, R3, R4, R5 = H, Cbalkyl, Cw,-acyl-benzoyl, Ctrialkylsilyl, benzyl, fenyl, Ci-e-alkoxy-, C6-alkyl~, hydroxy, halogenem substituovaný benzyl resp. fenyl;
přičemž také dva ze zbytků R1 až R5 mohou být spojeny se seskupením -(CH2)n- kde η - 1 až 6. a u zbytků obsažených alkyl- nebo acyl-skupin se jedná o zbytky s přímým nebo rozvětveným řetězcem;
Y a Z jsou buď stejné nebo rozdílné a představují vodík, halogen jako F, Cl, Br nebo I, pseudohalogen jako -NCO, -NCS, nebo N3, OH, O-(Ci-6)-acy], O-(Ci 6)-alkyl, O-benzoyl. Y a Z mohou být také kyslíkovým atomem epoxidu, nebo jedna z C-C vazeb tvoří dvojnou vazbu C-C. Takto je možné 12,13-dvojnou vazbu selektivně
- hydrogenovat, například katalyticky nebo diiminem, přičemž se získá sloučenina vzorce 1, kdeY = Z = H; nebo
- epoxídovat, například dimethyldioxiranem nebo peroxykyselinou, přičemž se získá sloučenina vzorce 1, kde Y se Z = O; nebo
- převést na dihalogenidy, dipseudohalogenidy nebo diazidy, přičemž se získá sloučenina vzorce 1, kde Y a Z = halogen, pseudohalogen nebo N3.
Výroba a prostředky
Sloučeninu podle vynálezu, resp. epothilon C, lze získat za shora uvedených opatření.
Vynález se dále týká prostředků pro ochranu rostlin v zemědělství, lesnictví a/nebo zahradnictví, sestávajících zepothilonu C, popřípadě vedle jednoho nebo více obvyklých nosičů a/nebo ředidel.
Konečně se vynález týká terapeutických prostředků, sestávajících z Epothilonu C, popřípadě vedle jednoho nebo více obvyklých nosičů a/nebo ředidel. Tyto prostředky mohou vykazovat zejména cytotoxické aktivity a/nebo imunosupresi a/nebo mohou být používány k potírání maligních tumorů, přičemž je zvlášť preferováno jejich používání jako cytostatik,
Vynález je následujícím popisem několika vybraných příkladů provedení blíže objasněn a popsán.
-2CZ 303422 B6
Příklady provedení vynálezu
Příklad 1
Epothilon C spolu s epothilonem D
A. Produkční kmen a podmínky kultury odpovídající základnímu patentu epothilonu DE-B41 38 042.
B. Produkce s DSM 6773
Bylo vzato 75 1 kultury jak je popsáno v základním patentu a použito k naočkování produkčního fermentoru se 700 1 produkčního média z 0,8 % škrobu, 0,2 % glukosy, 0,2 % sojové moučky,
0,2 % extraktu kvasnic, 0,1 % CaCl2.2H2O, 0,1 % MgSO4.7H2O, 8 mg/1 Fe-EDTA, pH = 7,4 a případně 15 1 adsorpční pryskyřice Amberlite XAD-16. Fermentace trvala 7 až 10 dní při 30 °C, provzdušňování s 0,1 N-l/m3. Regulací počtu otáček byl pO2 udržován na 30 %.
C. Izolace
Adsorpční pryskyřice byla od kultury oddělena pomocí 0,7 m2. lOOmesh procesního filtru a promytím 3 objemy směsi voda/methanol 2 : 1 byla zbavena polárních příměsí. Eluováním 4 objemy methanolu se získal surový extrakt, který byl ve vakuu až do výstupu vodní fáze odpařen. Tato byla třikrát extrahována stejným objemem ethylacetátu. Zhuštění organické fáze poskytlo 240 g surového extraktu, který byl rozdělen mezi methanol a heptan, aby se oddělily lipofilní příměsi. Zahuštěním methanolické fáze ve vakuu bylo získáno 180 g rafinátů, který byl ve třech podílech frakcionován na Sephadexu LH-20 (sloupec 20 x 100 cm, 20 ml/min methanolu). Epothilony jsou v množství 72 g obsaženy ve frakci eluované s retenční dobou 240 až 300 min. K oddělení epothilonu bylo ve třech podílech chromatografováno na Lichrosorbu RP-18 (15 pm, sloupec 10 x 40 cm, mobilní fáze 18 ml/min směsi methanol/voda 65 : 35). Po Epothilonu A a B byl eluován epothilon C s Rt = 90 až 95 min a epothilon D s Rt = 100 až 110 min a po odpaření ve vakuu byly nakonec získány jako bezbarvé oleje ve výtěžku 0,3 g.
D. Fyzikální vlastnosti
Epothilon C κ = H
Epothilon D Re CH3
Epothilon C
C26H39NO5S [477]
ESI-MS: (pozitivní ionty): 478,5 pro [M+H]+ lH— a ,3C-NMR viz tabulka 1
DC: Rf = 0,82
DC-Alufolie 60 F 254 Merck, mobilní fáze: dichlormethan/methanol = 9:1
Detekce: UV-zhášení při 254 nm. Postřik činidlem vanilin-kyselina sírová, modrošedé zabarvení při zahřátí na 120 °C.
HPLC: R, 11,5 min
Sloupec: Nucleosil 100 C-l 8 7 /zm, 125 x 4 mm Mobilní fáze: methanol/voda 65 : 35 Průtok: 1 ml/min
Detekce: diodový systém io
Epothilon D
C27H4iNO5S [491]
ESI-MS: (pozitivní ionty): 492,5 pro [M+H]+ lH- a l3C-NMR viz tabulka 1
DC: Rf=0,82
DC-Alufolie 60 F 254 Merck, mobilní fáze: dichlormethan/methanol = 9:1
Detekce: UV-zhášení při 254 nm. Postřik činidlem vanilin-kyselina sírová, modrošedé zabarvení při zahřátí na 120 °C.
HPLC: R, 15,3 min
Sloupec: Nucleosil 100 C-l 8 7 /zm, 125 x 4 mm Mobilní fáze: methanol/voda 65 : 35 Průtok: 1 ml/min
Detekce: diodový systém
-4CZ 303422 B6
Tabulka 1 'H- a 13C-NMR data Epothilonu C a Epothilonu D v [DĎ] DMSO při 300 MHz
Epothilon C | Epothilon D | |||||
H-atom | δ (ppm) | C-atom | δ (ppm) | δ (ppm) | C-atom | δ (ppm) |
1 | 170,3 | 1 | 170,1 | |||
2-Ha | 2,38 | 2 | 38,4 | 2,35 | 2 | 39,0 |
2-Hb | 2,50 | 3 | 71,2 | 2,38 | 3 | 70,8 |
3-H | 3,97 | 4 | 53,1 | 4,10 | 4 | 53,2 |
3-OH | 5,12 | 5 | 217,1 | 5,08 | 5 | 217,4 |
6-H | 3,07 | 6 | 45,4 | 3,11 | 6 | 44,4 |
7-H | 3,49 | 7 | 75,9 | 3,48 | 7 | 75,5 |
7-OH | 4,46 | 8 | 35,4 | 4,46 | 8 | 36,3 |
8-H | 1,34 | 9 | 27,6 | 1,29 | 9 | 29,9 |
9-Ha | 1.15 | 10 | 30,0 | 1.14 | 10 | 25,9 |
9-Hb | 1,40 | 11 | 27,6 | 1,38 | 11 | 31,8* |
10-Ha | 1.15' | 12 | 124,6 | 1,14’ | 12 | 138,3 |
10-Hb | 1,35 | 13 | 133,1 | 1,35' | 13 | 120,3 |
11-Ha | 1,90 | 14 | 31,3 | 1.75 | 14 | 31,6* |
11-Hb | 2,18 | 15 | 76,3 | 2,10 | 15 | 76,6 |
12-H | 5,38 | 16 | 137,3 | 16 | 137,2 | |
13-H | 5,44 | 17 | 119,1 | 5,08 | 17 | 119,2 |
14-Ha | 2,35 | 18 | 152,1 | 2,30 | 18 | 152,1 |
14-Hb | 2,70 | 19 | 117,7 | 2,65 | 19 | 117,7 |
15-H | 5,27 | 20 | 164,2 | 5,29 | 20 | 164,3 |
17-H | 6,50 | 21 | 18,8 | 6,51 | 21 | 18,9 |
19-H | 7,35 | 22 | 20,8 | 7,35 | 22 | 19.7 |
2I-H3 | 2,65 | 23 | 22,6 | 2,65 | 23 | 22,5 |
22-H3 | 0,94 | 24 | 16,7 | 0,90 | 24 | 16,4 |
23-H3 | 1,21 | 25 | 18,4 | 1,19 | 25 | 18,4 |
24-H3 | 1,06 | 27 | 14,2 | 1,07 | 26 | 22,9 |
25-H3 | 0,90 | 0,91 | 27 | 14,1 | ||
26-H3 | 1,63 | |||||
27-H3 | 2,10 | 2,11 |
*, ** zaměnitelné přiřazení io Příklad 2
Epothilon A a 12,13-bisepi-epothilon A z epothilonu C mg epothilonu C bylo rozpuštěno v 1,5 ml acetonu a smíseno s 1,5 ml 0,07 molámího roztoku 15 dimethyldioxiranu v acetonu. Po 6 hodinách stání při teplotě místnosti bylo odpařeno ve vakuu a produkty byly odděleny pomocí preparativní HPLC (mobilní fáze: methy 1-terc-butylether/petrolether/methanol 33 : 66 : 1).
Výtěžek:
25 mg epothilonu A,
Rt = 3,5 min (analytická HPLC, 7 pm, sloupec 4 x 250 mm, mobilní fáze viz nahoře, průtok 1,5 ml/min) a mg 12,13-bisepi-epothilonu A,
Rt = 3,7 min, ESI-MS (pozitivní ionty) m/z = 494 [M+H]+, 'H-NMR v [D4] methanolu, vybrané signály: delta = 4,32 (3-H), 3,79 (7-H), 3,06 (12-H), 3,16 (13-H), 5,54 (15-H), 6,69(17-H), 1,20(22-H), 1,45 (23~H).
12,13-Bisepi-epothilon A R - H
Příklad 3
Epothilon C podle vynálezu byl testován spolu s příbuznými epothilony buněčnými kulturami 15 (tabulka 2) a na podporu polymerizace (tabulka 3).
Tabulka 2
Testy epothilonů s buněčnými kulturami
Epothilon | A 493 | B 507 | C 477 | D 491 | E 509 | F 523 |
IC-50 | pg/ml] | |||||
Myší fibroblasty L 929 | 4 | 1 | 100 | 20 | 20 | 1,5 |
Buněčné linie lidských tumorů: | ||||||
HL-60 (leukemie) | 0,2 | 0,2 | 10 | 3 | 1 | 0,3 |
K-562 (leukemie) | 0,3 | 0,3 | 20 | 10 | 2 | 0,5 |
U-937 (lymfom) | 0,2 | 0,2 | 10 | 3 | 1 | 0,2 |
KB-3.1 (cervikální karcinom) | 1 | 0,6 | 20 | 12 | 5 | 0,5 |
KB-V1 (cervikální karcinom muítires) | 0,3 | 0,3 | 15 | 3 | 5 | 0,6 |
A-498 (karcinom ledvin) | - | 1,5 | 150 | 20 | 20 | 3 |
A-498 (karcinom plic) | 0,7 | 0,1 | 30 | 10 | 3 | 0,1 |
-6CZ 303422 B6
Tabulka 3
Polymerizační test s epothilony
Parametr: čas až do poloviny maximální polymer i zace kontroly
Měření: | w | X | y | z | střed [sj | střed [%] |
Kontrola | 200 | 170 | 180 | 210 | 190 | 100 |
Epothilon A | 95 | 60 | 70 | 70 | 74 | 39 |
Epothilon B | 23 | 25 | 30 | 26 | 14 | |
Epothilon C | 125 | 76 | 95 | 80 | 94 | 49 |
Epothilon D | 125 | 73 | 120 | 106 | 56 | |
Epothilon E | 80 | 60 | 50 | 45 | 59 | 31 |
Epothilon F | 80 | 40 | 30 | 50 | 50 | 26 |
Standardní test s 0,9 mg tubulinu/ml a koncentrací vzorku 1 μΜ
Polymerizační test in vitro test s čištěným tubulinem z prasečího mozku. Vyhodnocení probíhá fotometricky, Polymerizaci podporující substance jako epothilony zkracují čas, do poloviny maximální polymerizace, tj. čím je kratší čas, tím je sloučenina účinnější. Symboly w, x, y a z označují čtyři nezávislé pokusy, relativní účinnost je v posledním sloupci vyjádřena v % kontroly; nejlepší účinnost opět vykazují nejnižší hodnoty. Pořadí v seznamu odpovídá téměř přesně zjištěnému u buněčných kultur.
Claims (5)
- PATENTOVÉ NÁROKY1. Epothilon C vzorceEpothilon C R = H kde Meje methyl.
- 2. Epitholon C podle nároku 1 sumárního vzorce C20H39NO5S, mající následující 'H— a 13CNMR spektrum:
H-atom δ (ppm) C-atom δ (ppm) 1 170,3 2-Ha 2,38 2 38,4 2-Hb 2,50 3 71.2 3-H 3,97 4 53,1 3-OH 5,12 5 217,1 6-H 3,07 6 45,4 7-H 3,49 7 75,9 7-OH 4,46 8 35,4 8-H 1.34 9 27,6 9-Ha 1,15 10 30,0 9-Hb 1,40 11 27,6 10-Ha 1,15' 12 124,6 10-Hb 1,35 13 133,1 11-Ha 1,90 14 31,3 11 -Hb 2,18 15 76,3 12-H 5,38 16 137,3 13-H 5,44 17 119,1 14-Ha 2,35 18 152,1 14-Hb 2,70 19 117,7 15-H 5,27 20 164,2 17-H 6,50 21 18,8 19-H 7,35 22 20,8 21-H3 2,65 23 22,6 22-H3 0,94 24 16,7 23-H3 1,21 25 18,4 24-H3 1,06 27 14,2 25-H3 0,90 26-H3 27-H3 2,10 zaměnitelné přiřazení5 - 3. Způsob přípravy epoth ilonu C jak je definován v nároku 1, vyznačující se tím, že se (c) Sorangium cellulosum DSM 6773 o sobě známým způsobem kultivuje v přítomnosti adsorpční pryskyřice, (d) adsorpční pryskyřice se oddělí od kultury a promyje směsí voda/methanol, ío (h) promytá adsorpční pryskyřice se eluuje methanolem a eluát se zahustí na surový extrakt, (i) získaný koncentrát se extrahuje ethylacetátem, extrakt se zahustí a rozdělí mezi methanol a hexan, (j) methanolická fáze se zahustí na rafinát a tento koncentrát se frakcionuje na sloupci Sephadexu,15 (k) získá se frakce s produkty metabolismu použitého mikroorganismu, (1) získaná frakce se chromatografuje se směsí methanol/voda na C18-reverzní fázi a v časovém pořadí postupně - po první frakci s epothilonem A a-8CZ 303422 B6- druhé frakci s epothilonem B se získá- třetí frakce s prvním dalším epothilonem a- čtvrtá frakce s druhým dalším epothilonem a izoluje se (hl) epothilon z první další frakce a/nebo5 (h2) epothilon z druhé další frakce.
- 4. Prostředek pro ochranu rostlin v zemědělství a lesnictví a/nebo zahradnictví, vyznačený tím, že sestává z alespoň jedné sloučeniny podle nároku 1 nebo 2 a popřípadě alespoň jednoho nosiče a/nebo rozpouštědla.o
- 5. Terapeutický prostředek, zvláště pro použití jako cytostatikum, vyznačený tím, že sestává ze sloučeniny podle nároku 1 nebo 2 a popřípadě alespoň jednoho nosiče a/nebo rozpouštědla.
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CZ0175099A CZ296164B6 (cs) | 1996-11-18 | 1997-11-18 | Epothilony D, E a F, zpusob jejich výroby a jejich pouzití jako cytostatik a prostredku pro ochranurostlin |
CZ20041118A CZ303422B6 (cs) | 1996-11-18 | 1997-11-18 | Epothilon C, zpusob jeho výroby a jeho použití jako cytostatik a prostredku pro ochranu rostlin |
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