DE10047529A1 - New triazolyl-thiazolyl-epothilone derivatives, useful as fungicides or in the treatment of tumors and cell growth disorders, e.g. cancers - Google Patents
New triazolyl-thiazolyl-epothilone derivatives, useful as fungicides or in the treatment of tumors and cell growth disorders, e.g. cancersInfo
- Publication number
- DE10047529A1 DE10047529A1 DE2000147529 DE10047529A DE10047529A1 DE 10047529 A1 DE10047529 A1 DE 10047529A1 DE 2000147529 DE2000147529 DE 2000147529 DE 10047529 A DE10047529 A DE 10047529A DE 10047529 A1 DE10047529 A1 DE 10047529A1
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- Germany
- Prior art keywords
- epothilone
- triazolo
- alkyl
- thiazole
- heteroaryl
- Prior art date
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D519/00—Heterocyclic compounds containing more than one system of two or more relevant hetero rings condensed among themselves or condensed with a common carbocyclic ring system not provided for in groups C07D453/00 or C07D455/00
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)
Abstract
Description
Die Erfindung betrifft Triazolo-thiazol-Analoge von Epothilon A und Epothilon B.The invention relates to triazolo-thiazole analogs of epothilone A and Epothilon B.
Epothilone sind macrocyclische Lactone mit fungizider und cytotoxischer Wirkung. Es besteht ein kontinuierlicher Bedarf für Analoge oder Derivate mit vergleichbarer oder besserer Wirksamkeit, die als Fungizide oder Cytostatika verwendet werden können.Epothilones are macrocyclic lactones with fungicidal and cytotoxic effect. There is an ongoing need for analogs or derivatives with comparable or better Efficacy used as fungicides or cytostatics can be.
Eine Übersicht über die Chemie der Epothilone wird beispiels weise von Nicolaou et al. in Angew. Chem. Int. Ed. 1998, Bd. 37, 2014-2045 gegeben.An overview of the chemistry of epothilones is given, for example by Nicolaou et al. in Angew. Chem. Int. Ed. 1998, vol. 37, 2014-2045.
Aufgabe der Erfindung ist die Bereitstellung derartiger Epothilon-Analogen bzw. -Derivate.The object of the invention is to provide such Epothilone analogs or derivatives.
Die Erfindung betrifft somit Triazolo-thiazol-Analoge von
Epothilon A und Epothilon B mit der Formel 4a oder 4b:
The invention thus relates to triazolo-thiazole analogs of epothilone A and epothilone B with the formula 4a or 4b:
in denen bedeuten:
R: H, CH3
Z: H, Alkyl, Aryl, Heteroaryl.in which mean:
R: H, CH 3
Z: H, alkyl, aryl, heteroaryl.
Die erfindungsgemäßen Triazolo-thiazol-Epothilone sind sehr wirksame Fungizide und hochpotente Cytostatika mit günstigen pharmakologischen Eigenschaften.The triazolothiazole epothilones according to the invention are very effective fungicides and highly potent cytostatics with cheap pharmacological properties.
Alkyl bedeutet geradkettiges oder verzweigtes C1-C6-Alkyl, das beliebig substituiert (einfach oder mehrfach) sein kann, beispielsweise Methyl, Ethyl, Propyl, iso-Propyl, Butyl, iso- Butyl, tert.-Butyl, Pentyl, Hexyl. Beispiele für Substituen ten sind C1-C6-Alkoxy, C1-C6-Acyl, Hydroxyl, Halogen wie Brom, Chlor, Fluor und Jod.Alkyl means straight-chain or branched C 1 -C 6 -alkyl which can be substituted as desired (single or multiple), for example methyl, ethyl, propyl, isopropyl, butyl, isobutyl, tert-butyl, pentyl, hexyl. Examples of substituents are C 1 -C 6 alkoxy, C 1 -C 6 acyl, hydroxyl, halogen such as bromine, chlorine, fluorine and iodine.
Aryl bedeutet einkernige oder mehrkernige aromatische Syste me, die beliebig substituiert (einfach oder mehrfach) sein können, beispielsweise Phenyl, o-, m-, p-Tolyl, o-, m-, p- Xylyl, Benzyl, Phenethyl, Naphthyl. Beispiele für Substituen ten sind C1-C6-Alkyl, C1-C6-Alkoxy, C1-C6-Acyl, Hydroxyl, Halo gen wie Brom, Chlor, Fluor und Jod. Aryl means mononuclear or polynuclear aromatic systems which can be substituted as desired (single or multiple), for example phenyl, o-, m-, p-tolyl, o-, m-, p-xylyl, benzyl, phenethyl, naphthyl. Examples of substituents are C 1 -C 6 alkyl, C 1 -C 6 alkoxy, C 1 -C 6 acyl, hydroxyl, halogen such as bromine, chlorine, fluorine and iodine.
Heteroaryl bedeutet einkernige oder mehrkernige heteroaroma tische Systeme, die beliebig substituiert (einfach oder mehr fach) sein können, wobei der aromatische Kern ein oder mehre re unter N, O, S ausgewählte Heteroatome aufweisen kann. Bei spiel für Heteroaryl sind Furanyl, Pyranyl, Pyrrolyl, Imida zolyl, Pyrazolyl, Pyridinyl, Indolyl. Beispiele für Substitu enten sind C1-C6-Alkyl, C1-C6-Alkoxy, C1-C6-Acyl, Hydroxyl, Ha logen wie Brom, Chlor, Fluor und Jod.Heteroaryl means mononuclear or multinuclear heteroaromatic systems which can be substituted as desired (simple or multiple), the aromatic nucleus having one or more heteroatoms selected from N, O, S. Examples of heteroaryl are furanyl, pyranyl, pyrrolyl, imidazolyl, pyrazolyl, pyridinyl, indolyl. Examples of substituents are C 1 -C 6 alkyl, C 1 -C 6 alkoxy, C 1 -C 6 acyl, hydroxyl, halogen such as bromine, chlorine, fluorine and iodine.
Die Erfindung betrifft ferner ein Verfahren zur Herstellung der erfindungsgemäßen Triazolo-thiazol-Analogen von Epothilon A und Epothilon B sowie fungizide und pharmazeutische Zusam mensetzungen, die ein oder mehrere derartige Analoge enthal ten, und die Verwendung der Analogen und der diese enthalten den fungiziden oder pharmazeutischen Zusammensetzungen zur Bekämfung von Pilzen oder zur Behandlung von Erkrankungen, die sich mit Cytostatika behandeln lassen, beispielsweise Tu morerkrankungen wie Krebs oder Zellwachstumsstörungen.The invention further relates to a method of manufacture the triazolo-thiazole analogs of epothilone according to the invention A and Epothilon B as well as fungicidal and pharmaceutical co resolutions containing one or more such analogs ten, and the use of the analogues and these included the fungicidal or pharmaceutical compositions for Combating fungi or for treating diseases, that can be treated with cytostatics, for example Tu diseases like cancer or cell growth disorders.
Die fungiziden und pharmazeutischen Zusammensetzungen können neben dem eigentlichen Wirkstoff übliche Träger, Verdünnungs mittel oder Hilfsstoffe enthalten, beispielsweise Stabilisa toren wie UV-Absorber, Antioxidationsmittel, Konservierungs mittel.The fungicidal and pharmaceutical compositions can in addition to the actual active ingredient, usual carriers, diluents contain agents or auxiliaries, for example Stabilisa gates such as UV absorbers, antioxidants, preservatives medium.
Fig. 1 zeigt einen Syntheseweg zur Herstellung der erfin dungsgemäßen Triazolo-thiazol-Analogen von Epothilon A und Epothilon B. Fig. 1 shows a synthetic route for the preparation of the inventive triazolo-thiazole analogs of epothilone A and epothilone B.
Im folgenden wird ohne Beschränkung unter Bezugnahme auf Fig. 1 die Herstellung der erfindungsgemäßen Triazolo-thiazol- Analogen von Epothilon A und Epothilon B beschrieben. Die Ab kürzung Met bedeutet Metall.The production of the triazolo-thiazole analogs of epothilone A and epothilone B according to the invention is described below without limitation with reference to FIG. 1. The abbreviation Met means metal.
Die Herstellung von C21-modifizierten Epothilonen, d. h. der Aldehyde, Ketone und Hydrazone mit den Formeln 1, 2 bzw. 3, ist in der offengelegten deutschen Patentanmeldung DE 199 07 588 und in der offengelegten internationalen Patentanmeldung WO 2000/050423 der Anmelderin beschrieben. Bei dem erfin dungsgemäßen Verfahren wird an den Hydrazon-Derivaten der Formeln 3a und 3b der oxidative Ringschluß mit Hilfe von Me talloxiden, vorzugsweise mit NiO2, K3[Fe(CN)6], Bleitetraace tat oder Natriumhypochlorid (vgl. Houben-Weyl, Bd. E 14b, 4. Auflage, 1999) vorgenommen.The preparation of C21-modified epothilones, ie the aldehydes, ketones and hydrazones with the formulas 1, 2 and 3, is described in the published German patent application DE 199 07 588 and in the international patent application WO 2000/050423 by the applicant. In the process according to the invention, the oxidative ring closure is carried out on the hydrazone derivatives of the formulas 3a and 3b with the aid of metal oxides, preferably with NiO 2 , K 3 [Fe (CN) 6 ], lead tetraacetate or sodium hypochlorite (cf. Houben-Weyl , Vol. E 14b, 4th edition, 1999).
24.6 mg (47.2 µmol) Epothilon-A-21-aldehydhydrazon (Formel 3a) werden in 1.5 ml abs. Dichlormethan gelöst. Im Abstand von 15 min werden dreimal je 42.8 mg (472.2 µmol) Nickelper oxid hinzugegeben, wobei bei Raumtemperatur gerührt wird. An schließend wird über Celite filtriert und mit Dichlormethan nachgewaschen. Die vereinigten organischen Phasen werden ein geengt und im Hochvakuum getrocknet. Die Reinigung des Roh produktes erfolgt mittels präparativer HPLC (Laufmittel: Ace tonitril/Wasser 38 : 62; Säule: Nucleosil 100 C18 7 µm, 21 × 250 mm). Es wurden 12.0 mg (49%) Produkt erhalten.24.6 mg (47.2 µmol) epothilone A-21 aldehyde hydrazone (formula 3a) in 1.5 ml abs. Dichloromethane dissolved. At a distance From 15 min, 42.8 mg (472.2 µmol) of nickel per three times added oxide, stirring at room temperature. to finally it is filtered through Celite and with dichloromethane rewashed. The combined organic phases become one concentrated and dried in a high vacuum. Cleaning the raw product is carried out using preparative HPLC (eluent: Ace tonitrile / water 38: 62; Column: Nucleosil 100 C18 7 µm, 21 × 250 mm). 12.0 mg (49%) of product were obtained.
Die spektroskopischen Daten sind identisch mit Epothilon A
(vgl. DE 41 38 042 C2) mit Ausnahme von:
1H-NMR (400 MHz, CDCl3): d = 2.25 (dt, 2a-H), 2.57 (dd, 2b-
H), 4.63 (m, 3-H), 5.02 (dd, 3-OH), 1.68 (m, 14a-H), 2.31
(dt, 14b-H), 5.53 (d, 15-H), 6.92 (bs, 17-H), 7.06 (s, 19-H),
7.84 (s, 21-H), 1.08 (s, 22-H), 1.55 (s, 23-H); 13C-NMR (100 MHz,
CDCl3): d = 73.0 (3-C), 54.7 (4-C), 41.4 (6-C), 71.4 (7-
C), 32.0 (14-C), 74.9 (15-C), 145.1 (16-C), 109.2 (17-C),
129.2 (18-C), 115.5 (19-C), 136.4 (20-C), 124.8 (21-C), 15.9
(C-22), 23.3 (23-C), 12.7 (24-.C), 18.1 (27-C); HRMS (DCI):
C26H37N3O6S: [M + NH4+] ber. 537.2747, gef. 537.2721.The spectroscopic data are identical to epothilone A (cf. DE 41 38 042 C2) with the exception of:
1 H-NMR (400 MHz, CDCl 3 ): d = 2.25 (dt, 2a-H), 2.57 (dd, 2b-H), 4.63 (m, 3-H), 5.02 (dd, 3-OH), 1.68 (m, 14a-H), 2.31 (dt, 14b-H), 5.53 (d, 15-H), 6.92 (bs, 17-H), 7.06 (s, 19-H), 7.84 (s, 21 -H), 1.08 (s, 22-H), 1.55 (s, 23-H); 13 C-NMR (100 MHz, CDCl 3 ): d = 73.0 (3-C), 54.7 (4-C), 41.4 (6-C), 71.4 (7- C), 32.0 (14-C), 74.9 (15-C), 145.1 (16-C), 109.2 (17-C), 129.2 (18-C), 115.5 (19-C), 136.4 (20-C), 124.8 (21-C), 15.9 ( C-22), 23.3 (23-C), 12.7 (24-.C), 18.1 (27-C); HRMS (DCI): C 26 H 37 N 3 O 6 S: [M + NH 4 +] calc. 537.2747, found. 537.2721.
8.1 mg (15.1 µmol) Epothilon-B-21-aldehydhydrazon (Formel 3b) werden in 1 ml abs. Dichlormethan gelöst. Zur Lösung werden 13.7 mg (151.4 µmol) Nickelperoxid gegeben, worauf 15 min bei Raumtemperatur gerührt wird. Das Nickelperoxid wird über Ce lite abfiltriert und mit Dichlormethan gewaschen. Die verei nigten organischen Phasen werden eingeengt und im Hochvakuum getrocknet. Die Reinigung des Rohproduktes erfolgt mittels präparativer HPLC (Laufmittel: Acetonitril/Wasser 40 : 60; Säule: Nucleosil 100 C18 7 µm, 21 × 250 mm) und ergab 4.7 mg (58%) Produkt.8.1 mg (15.1 µmol) epothilone B-21 aldehyde hydrazone (Formula 3b) are abs in 1 ml. Dichloromethane dissolved. Be the solution 13.7 mg (151.4 µmol) of nickel peroxide were added, followed by 15 min Room temperature is stirred. The nickel peroxide is over Ce filtered off and washed with dichloromethane. The verei nigen organic phases are concentrated and in a high vacuum dried. The raw product is cleaned by means of preparative HPLC (mobile phase: acetonitrile / water 40:60; Column: Nucleosil 100 C18 7 µm, 21 × 250 mm) and gave 4.7 mg (58%) product.
Die spektroskopischen Daten sind identisch mit Epothilon 8
(vgl. DE 41 38 042 C2) mit Ausnahme von:
1H-NMR (400 MHz, CDCl3): d = 2.25 (dt, 2a-H), 2.59 (dd, 2b-
H), 4.69 (m, 3-H), 5.02 (dd, 3-OH), 1.76 (m, 14a-H), 2.31
(dt, 14b-H), 5.53 (d, 15-H), 6.91 (bs, 17-H), 7.06 (s, 19-H),
7.85 (s, 21-H), 1.08 (s, 22-H), 1.56 (s, 23-H); 13C-NMR (100 MHz,
CDCl3): d = 71.3 (3-C), 54.9 (4-C), 41.0 (6-C), 72.4 (7-
C), 33.1 (14-C), 75.2 (15-C), 145.3 (16-C), 108.9 (17-C),
129.2 (18-C), 115.5 (19-C), 136.5 (20-C), 124.9 (21-C), 15.7
(22-C), 23.2 (23-C), 12.0 (24-C), 18.1 (27-C); MS (ESI):
[M + H+] = 534.The spectroscopic data are identical to epothilone 8 (cf. DE 41 38 042 C2) with the exception of:
1 H-NMR (400 MHz, CDCl 3 ): d = 2.25 (dt, 2a-H), 2.59 (dd, 2b-H), 4.69 (m, 3-H), 5.02 (dd, 3-OH), 1.76 (m, 14a-H), 2.31 (dt, 14b-H), 5.53 (d, 15-H), 6.91 (bs, 17-H), 7.06 (s, 19-H), 7.85 (s, 21 -H), 1.08 (s, 22-H), 1.56 (s, 23-H); 13 C-NMR (100 MHz, CDCl 3 ): d = 71.3 (3-C), 54.9 (4-C), 41.0 (6-C), 72.4 (7- C), 33.1 (14-C), 75.2 (15-C), 145.3 (16-C), 108.9 (17-C), 129.2 (18-C), 115.5 (19-C), 136.5 (20-C), 124.9 (21-C), 15.7 ( 22-C), 23.2 (23-C), 12.0 (24-C), 18.1 (27-C); MS (ESI): [M + H + ] = 534.
Die pharmakologisch Wirksamkeit ist in der folgenden Tabelle dargestellt:The pharmacological effectiveness is in the table below shown:
Claims (9)
in denen bedeuten:
R: H, CH3
Z: H, Alkyl, Aryl, Heteroaryl.1. Triazolo-thiazole analogs of epothilone A and epothilone B with the formula 4a or 4b:
in which mean:
R: H, CH 3
Z: H, alkyl, aryl, heteroaryl.
Alkyl: geradkettiges oder verzweigtes C1-C6-Alkyl, das belie big substituiert (einfach oder mehrfach) sein kann,
Aryl: einkernige oder mehrkernige aromatische Systeme, die beliebig substituiert (einfach oder mehrfach) sein können,
Heteroaryl: einkernige oder mehrkernige heteroaromatische Sy steme, die beliebig substituiert (einfach oder mehrfach) sein können. 2. Triazolo-thiazole analogs of epothilone A and epothilone B according to claim 1, wherein:
Alkyl: straight-chain or branched C 1 -C 6 -alkyl, which can be arbitrarily substituted (single or multiple),
Aryl: mononuclear or multinuclear aromatic systems which can be substituted as desired (single or multiple),
Heteroaryl: mononuclear or multinuclear heteroaromatic systems which can be substituted as desired (single or multiple).
Alkyl: Methyl, Ethyl, Propyl, iso-Propyl, Butyl, iso-Butyl, tert.-Butyl, Pentyl, Hexyl, gegebenenfalls substituiert mit C1-C6-Alkoxy, C1-C6-Acyl, Hydroxyl, Halogen, insbesondere Br, Cl, F, J,
Aryl: Phenyl, o-, m-, p-Tolyl, o-, m-, p-Xylyl, Benzyl, Phe nethyl, Naphthyl, gegebenenfalls substituiert mit C1-C6- Alkyl, C1-C6-Alkoxy, C1-C6-Acyl, Hydroxyl, Halogen, insbeson dere Br, Cl, F, J,
Heteroaryl: Furanyl, Pyranyl, Pyrrolyl, Imidazolyl, Pyrazo lyl, Pyridinyl, Indolyl, gegebenenfalls substituiert mit C1- C6-Alkyl, C1-C6-Alkoxy, C1-C6-Acyl, Hydroxyl, Halogen, insbe sondere Br, Cl, F, J.3. Triazolo-thiazole analogs of epothilone A and epothilone B according to claim 2, wherein:
Alkyl: methyl, ethyl, propyl, iso-propyl, butyl, iso-butyl, tert-butyl, pentyl, hexyl, optionally substituted with C 1 -C 6 alkoxy, C 1 -C 6 acyl, hydroxyl, halogen, especially Br, Cl, F, J,
Aryl: phenyl, o-, m-, p-tolyl, o-, m-, p-xylyl, benzyl, phenyl, naphthyl, optionally substituted with C 1 -C 6 alkyl, C 1 -C 6 alkoxy, C 1 -C 6 acyl, hydroxyl, halogen, in particular Br, Cl, F, J,
Heteroaryl: furanyl, pyranyl, pyrrolyl, imidazolyl, pyrazo lyl, pyridinyl, indolyl, optionally substituted with C 1 - C 6 alkyl, C 1 -C 6 alkoxy, C 1 -C 6 acyl, hydroxyl, halogen, in particular special Br, Cl, F, J.
wobei R und Z die oben definierten Bedeutungen haben, mit Hilfe von Metalloxiden, K3[Fe(CN)6], Bleitetraacetat oder Na triumhypochlorid ein oxidativer Ringschluß vorgenommen wird.4. A process for the preparation of the triazolo-thiazole analogs of epothilone A or epothilone B according to one of the preceding claims, in which on a hydrazone derivative of epothilone A or epothilon B with the formula 3a or 3b:
where R and Z have the meanings defined above, with the aid of metal oxides, K 3 [Fe (CN) 6 ], lead tetraacetate or sodium hypochlorite, an oxidative ring closure is carried out.
Priority Applications (23)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2000147529 DE10047529A1 (en) | 2000-09-22 | 2000-09-22 | New triazolyl-thiazolyl-epothilone derivatives, useful as fungicides or in the treatment of tumors and cell growth disorders, e.g. cancers |
US10/381,176 US6900160B2 (en) | 2000-09-22 | 2001-09-21 | Triazolo-epothilones |
CZ2003845A CZ2003845A3 (en) | 2000-09-22 | 2001-09-21 | Triazolo-epothilones |
PCT/EP2001/010991 WO2002024712A1 (en) | 2000-09-22 | 2001-09-21 | Triazolo-epothilones |
IL15498601A IL154986A0 (en) | 2000-09-22 | 2001-09-21 | Triazolo-epothilone derivatives, pharmaceutical compositions containing the same and methods for the preparation thereof |
MXPA03002521A MXPA03002521A (en) | 2000-09-22 | 2001-09-21 | Triazolo-epothilones. |
KR10-2003-7004136A KR20030069993A (en) | 2000-09-22 | 2001-09-21 | Triazolo-epothilones |
BR0114065-5A BR0114065A (en) | 2000-09-22 | 2001-09-21 | Triazole-epothilones |
NZ524861A NZ524861A (en) | 2000-09-22 | 2001-09-21 | Epothilone A and epothilone B derivaitves and their use as fungicides and as a cytotoxic substances in the treatment of cancer |
RU2003111475/04A RU2003111475A (en) | 2000-09-22 | 2001-09-21 | TRIAZOLEPOTHYLONES |
AU9187601A AU9187601A (en) | 2000-09-22 | 2001-09-21 | Triazolo-epothilones |
HU0302905A HUP0302905A3 (en) | 2000-09-22 | 2001-09-21 | Triazolo-epothilone-analogs, process for their preparation and pharmaceutical compositions containing them |
JP2002529120A JP2004509899A (en) | 2000-09-22 | 2001-09-21 | Triazolo-epothilone |
EP01972077A EP1319011B1 (en) | 2000-09-22 | 2001-09-21 | Triazolo-epothilones |
CA002422500A CA2422500A1 (en) | 2000-09-22 | 2001-09-21 | Triazolo-epothilones |
PL36222501A PL362225A1 (en) | 2000-09-22 | 2001-09-21 | Triazolo-epothilones |
ZA200302241A ZA200302241B (en) | 2000-09-22 | 2001-09-21 | Triazolo-epothilones. |
AU2001291876A AU2001291876C1 (en) | 2000-09-22 | 2001-09-21 | Triazolo-epothilones |
ES01972077T ES2395895T3 (en) | 2000-09-22 | 2001-09-21 | Triazolo-epothilones |
CNB018161138A CN1190440C (en) | 2000-09-22 | 2001-09-21 | Triazolo-epothilones |
NO20031318A NO20031318L (en) | 2000-09-22 | 2003-03-21 | Triazole-epothilones |
HK04104391A HK1061560A1 (en) | 2000-09-22 | 2004-06-16 | Triazolo-epothilones. |
US11/055,124 US7419993B2 (en) | 2000-09-22 | 2005-02-09 | Triazolo-epothilones |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2000147529 DE10047529A1 (en) | 2000-09-22 | 2000-09-22 | New triazolyl-thiazolyl-epothilone derivatives, useful as fungicides or in the treatment of tumors and cell growth disorders, e.g. cancers |
Publications (1)
Publication Number | Publication Date |
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DE10047529A1 true DE10047529A1 (en) | 2002-04-11 |
Family
ID=7657595
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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DE2000147529 Withdrawn DE10047529A1 (en) | 2000-09-22 | 2000-09-22 | New triazolyl-thiazolyl-epothilone derivatives, useful as fungicides or in the treatment of tumors and cell growth disorders, e.g. cancers |
Country Status (2)
Country | Link |
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DE (1) | DE10047529A1 (en) |
ZA (1) | ZA200302241B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110577551A (en) * | 2018-06-08 | 2019-12-17 | 遵义医学院 | Camptothecin-glycine-5, 6-dibromo norcantharidin conjugate and application thereof |
-
2000
- 2000-09-22 DE DE2000147529 patent/DE10047529A1/en not_active Withdrawn
-
2001
- 2001-09-21 ZA ZA200302241A patent/ZA200302241B/en unknown
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110577551A (en) * | 2018-06-08 | 2019-12-17 | 遵义医学院 | Camptothecin-glycine-5, 6-dibromo norcantharidin conjugate and application thereof |
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ZA200302241B (en) | 2004-03-23 |
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