EP1439869A1

EP1439869A1 - Stents

Info

Publication number: EP1439869A1
Application number: EP02774699A
Authority: EP
Inventors: Elisabeth Perzborn; Jochen Kalbe; Wolfram Ledwoch; Didier Meulien
Original assignee: Bayer AG
Current assignee: Bayer Pharma AG
Priority date: 2001-10-24
Filing date: 2002-10-11
Publication date: 2004-07-28
Also published as: MXPA04003755A; HUP0401760A3; ECSP045075A; MA26341A1; WO2003035133A1; HUP0401760A2; JP2005506151A; HRP20040456A2; DE10152460A1; CN1575189A; EE200400080A; PL367968A1; BR0213481A; KR20040074977A; ZA200402989B; AU2002340549B2; NO20041984L; US20050064006A1; RU2004115757A; NZ532443A

Abstract

The invention concerns stents containing compounds of formula (I) and methods for making said stents as well as their use.

Description

stents

The present invention relates to stents containing blood coagulation factor Xa, processes for producing these stents and their use, in particular for the treatment and / or prophylaxis of thromboses and / or restenoses.

Atherosclerotic coronary diseases are treated, among other things, with the now common method of percutaneous transluminal coronary angioplasty (PTCA). For this purpose, a balloon catheter is inserted into the narrowed or closed

Artery is inserted, this is then expanded by expanding the balloon, thus restoring blood flow. The acute reoccurrence of the blood vessel that occurs immediately after the PTCA (acute restenosis) or the later subacute (restenosis) is a problem that occurs in approx. 30% of cases.

The risk of acute restenosis can be reduced by adding platelet aggregation inhibitors. In addition, the coronary wall can be mechanically supported by a usually cylindrical and expandable braid (stent) which is introduced into the diseased vessel and deployed at the site of the stenosis in order to open the narrowed area and to keep it open by supporting the blood vessel wall , Even if this method can slightly reduce the risk of restenosis, there is currently no convincing therapy available for subacute restenosis.

Anticoagulants such as heparin are currently used; Platelet aggregation inhibitors such as, for example, aspirin, clopidogrel (Plavix) or ticlopidine (ticlid); or glycoprotein III / πia antagonists such as, for example, abciximab, are used systemically in stent treatment.

A more recent option for treating restenosis is to administer the active ingredient locally by means of a stent which releases the active ingredient. The combination of Active ingredient and stent enable drug treatment and mechanical stabilization in one application.

The combination of stents with anticoagulants enables a high local concentration of active ingredient without the undesirable systemic side effects (e.g. bleeding or stroke).

For this purpose, stents can be coated with coating materials containing active ingredient. The active ingredient is released by diffusion from the paint or by degradation of the paint when using biodegradable paint systems.

Another possibility that has already been described is the preparation of small cavities or micropores in the stent surface, in which the active ingredient or polymeric coating systems containing the active ingredient are embedded (see, for example, EP-A-0 950 386). An active ingredient-free lacquer can then be applied. The release takes place by diffusion or degradation or by a combination of both processes.

In addition, drug-containing stents can be melted by embedding the drug in a polymeric carrier e.g. with the help of injection molding processes. In these stents, the active ingredient is usually released by diffusion.

Blood coagulation factor Xa inhibitors are particularly suitable as active substances for the treatment and / or prophylaxis of thromboses and restenoses after the PTCA.

The blood coagulation factor Xa plays a role in the proliferation of vascular smooth muscle cells (VSMC, vascular s ooth muscle cells). The migration and proliferation of VSMC due to an injury to the endothelium and the resulting formation of a neointima mainly contribute to the formation of restenosis and atherosclerosis in. Platelets, thrombi and other components of the thrombotic process are important factors in the formation of neointima. The serine protease thrombin, the formation of which is modulated by the blood coagulation factor Xa, has, in addition to its effect in the plasma coagulation system, further cell effects via its specific receptor. Through this mechanism, it activates platelets and acts as a strong mitogen for endothelial cells, VSMC, connective tissue cells and macrophages.

The mitogenic effect of the blood coagulation factor Xa occurs indirectly via the platelet-based growth factor (PDGF)

Receptor tyrosine kinase pathway and leads to the activation of the mitogen-activated protein kinases (MAPK, mitogen-activated protein kinases), which are intracellular mediators of cell proliferation. The VSMC proliferation modulated by the blood coagulation factor Xa influences the reclosure of vessels and the restenosis after angioplasty.

By specifically inhibiting blood coagulation factor Xa, intimal hyperplasia after vascular endothelial damage and thus the restenosis rate after successful angioplasty can be reduced by reducing the mitogenic effects of blood coagulation factor Xa itself and / or by reducing the formation of the potent mitogen thrombin ( MM Samama, JM Walenga, B. Kaiser, J. Fareed, Specific Factor Xa Inhibitors, in: M. Verstraete, V. Fuster, EJ Topol (ed.), Cardiovascular Thrombosis: Thrombocardiology and Thromboneurology, Philadelphia 1998, pp. 175- 176).

Surprisingly, it has now been found that oxazolidinones of the formula (I) are suitable for this type of treatment, they act in particular as anticoagulants and as selective inhibitors of the blood coagulation factor Xa and are described in detail in WO 01/47919. The compounds in general there and especially the compounds specifically mentioned therein are an express part of the description of the present invention. The present invention thus relates to stents containing one or more compounds of the formula (I)

in which:

R ^{1 represents} optionally benzo-condensed thiophene (thienyl), which may optionally be substituted one or more times;

R ^{2 represents} any organic radical;

R ³ , R ⁴ , R ⁵ , R ⁶ , R ⁷ and R ^{8 are the} same or different and stand for hydrogen or for (-CC ₆ ) alkyl

as well as their pharmaceutically acceptable salts and / or hydrates.

Stents containing compounds of the formula (I) are preferred

wherein

R ^{1 represents} optionally benzo-condensed thiophene (thienyl), which may optionally be substituted one or more times by a radical from the group of halogen; cyano; nitro; amino; aminomethyl; (C ₁ -C ₈ ) -alkyl, which in turn may be substituted one or more times by halogen can be; (C ₃ -C ₇ ) cycloalkyl; (C ₁ -C ₈ ) alkoxy; imidazolinyl; -C (= NH) NH ₂ ; carbamoyl; and mono- and di- (-C ₄ ) -all_yl-aminocarbonyl,

R ^{2 represents} one of the following groups: A-,

A-M-, D-M-A-, B-M-A-, B-, B-M-,

B-M-B-, D-M-B-,

in which:

the radical "A" stands for (C ₆ -C ₁ ) aryl, preferably for (C ₆ -C ₁ o) aryl, in particular for phenyl or naphthyl, very particularly preferably for phenyl;

the radical "B" represents a 5- or 6-membered aromatic heterocycle which contains up to 3 heteroatoms and / or hetero chain links, in particular up to 2 heteroatoms and / or hetero chain links, from the series S, N, NO ( Contains N-oxide) and O;

the radical “D” stands for a saturated or partially unsaturated, mono- or bicyclic, optionally benzo-fused 4- to 9-membered heterocycle which has up to three heteroatoms and / or hetero chain links from the series S, SO, SO ₂ , N,

Contains NO (N-oxide) and O;

the remainder "M" for -NH-, -CH ₂ -, -CH ₂ CH ₂ -, -O-, -NH-CH ₂ -, -CH ₂ -NH-, -OCH ₂ -, -CH ₂ O- , -CONH-, -NHCO-, -COO-, -OOC-, -S-, -SO ₂ - or represents a covalent bond; in which

the groups “A”, “B” and “D” defined above can each be optionally substituted one or more times with a radical from the group consisting of halogen; trifluoromethyl; oxo; cyano; nitro; carbamoyl; pyridyl; (Cι- C ₆ ) alkanoyl; (C -C) cycloalkanoyl; (C ₆ -Cι ₄ ) arylcarbonyl; (C ₅ -C ₁ o) heteroarylcarbonyl; (Cι-C ₆ ) alkanoyloxy ethyloxy; (Cι- C ₄ ) -hydroxyalkylcarbonyl; -COOR ²⁷ ; -SO ₂ R ²⁷ ; -C (NR ²⁷ R ²⁸ ) = NR ²⁹ ; -CONR ²⁸ R ²⁹ ; -SO ₂ NR ²⁸ R ²⁹ ; -OR ³⁰ ; -NR ³⁰ R ³¹ , (-CC ₆ ) alkyl and (C ₃ -C ₇ ) cycloalkyl,

where (-C-C ₆ ) alkyl and (C ₃ -C) cycloalkyl in turn optionally substituted CO (NH) _v (NR ²⁷ R ²⁸ ) and -C (NR ²⁷ R ²⁸ ) = NR ²⁹ ,

in which:

v means either 0 or 1 and

R, R and R are identical or different and independently of one another are hydrogen, (C ₁ -C ₄ ) -alkyl, (C ₃ -C ₇ ) -cycloalkyl, (CC ₄ ) -alkanoyl,

Are carbamoyl, trifluoromethyl, phenyl or pyridyl,

and or

R ²⁷ and R ²⁸ or R ²⁷ and R ²⁹ together with the nitrogen atom to which they are attached form a saturated or partially unsaturated 5- to 7-membered heterocycle with up to three, preferably up to two identical or different heteroatoms from the Form group of N, O and S, and R and R are identical or different and are independently hydrogen, (-CC ₄ ) alkyl, (C ₃ -C ₇ ) cycloalkyl, (-C-C ₄ ) alkylsulfonyl, (CrC ^ hydroxyalkyl, (-C-C ₄ ) -aminoalkyl, di- (C ₁ -C) -alkylamino- (-C-C ₄ ) -alkyl, -CH ₂ C (NR ²⁷ R ²⁸ ) = NR ²⁹ or -COR ³³ ,

in which

R ³³ (C, -C ₆₎ alkoxy, _(Cι-C4) alkoxy- _(Cι-C4) alkyl, (Cι-C ₄₎ -Alkoxycar- bonyl- _(Cι-C4) alkyl, (-C-C ₄ ) -Aminoa_kyl, (Cι-C ₄ ) -alkoxycarbonyl, (C ₁ -C ₄ ) -alkanoyl- (C ₁ -C ₄ ) -alkyl, (C ₃ -C ₇ ) -cycloalkyl, (C ₂ -C ₆ ) alkenyl,

(-CC ₈ ) alkyl, which can optionally be substituted by phenyl or acetyl, (C ₆ -C ₁₄ ) aryl, (C ₅ -C ₁ o) heteroaryl, trifluoromethyl, tetrahydrofuranyl or butyrolactone,

R ³ , R ⁴ , R ⁵ , R ⁶ , R ⁷ and R ^{8 are the} same or different and are for hydrogen or for

(-C ₆ ) -Alkyl stand

and their pharmaceutically acceptable salts and / or hydrates.

Stents containing compounds of the formula (I) are also preferred,

Wonn

R ^{1 represents} thiophene (thienyl), in particular 2-thiophene, which may optionally be mono- or polysubstituted by halogen, preferably chlorine or bromine, amino, aminomethyl or (C ₁ -C ₈ ) -alkyl, preferably methyl, where the (C ₁ -C ₈ ) -alkyl radical can in turn optionally be substituted one or more times by halogen, preferably fluorine,

R> 2 represents one of the following groups:

A-, AM, DMA, BMA, B, BM,

B-M-B-, D-M-B-,

where: the radical "A" is (C ₆ -C ₁₄₎ -aryl, preferably (C ₆ -C ₁ o) aryl, in particular phenyl or naphthyl, very particularly preferably phenyl;

the radical "B" represents a 5- or 6-membered aromatic heterocycle which contains up to 3 heteroatoms and / or hetero chain links, in particular up to 2 heteroatoms and / or hetero chain links, from the series S, N, NO ( NT

Oxide) and contains O;

the radical "D" stands for a saturated or partially unsaturated 4- to 7-membered heterocycle which has up to three heteroatoms and or hetero chain links from the series S, SO, SO ₂ , N, NO (N-oxide) and O contains;

the remainder "M" for -NH-, -CH ₂ -, -CH ₂ CH ₂ -, -O-, -NH-CH ₂ -, -CH ₂ -NH-, -OCH ₂ -, -CH ₂ O- , -CONH-, -NHCO-, -COO-, -OOC-, -S- or stands for a covalent bond;

in which

the groups “A”, “B” and “D” defined above can each be optionally substituted one or more times with a radical from the group consisting of halogen; trifluoromethyl; oxo; cyano; nitro; carbamoyl; pyridyl; (-C ₆

alkanoyl; (C ₃ -C ₇ ) cycloalkanoyl; (C ₆ -C ₄ ) -axylcarbonyl; (C ₅ -C ₁₀ ) hetero- arylcarbonyl; (CC ₆ ) alkanoyloxymethyloxy; -COOR ²⁷ ; -SO ₂ R ²⁷ ;

-C (NR ²⁷ R ²⁸ ) = NR ²⁹ ; -CONR ²⁸ R ²⁹ ; -SO ₂ NR ²⁸ R ²⁹ ; -OR ³⁰ ; -NR ³⁰ R ³¹ , (C, -C ₆ ) ~ alkyl and (C ₃ -C ₇ ) cycloalkyl,

where (C ₁ -C ₆ ) -alkyl and (C -C) -cycloalkyl may in turn optionally be substituted by a radical from the group of cyano; -OR; -NR ²⁸ R ²⁹ ; -CO (NH) _v (NR ²⁷ R ²⁸ ) and -C (NR ²⁷ R ²⁸ ) = NR ²⁹ ,

in which:

v means either 0 or 1 and

R ²⁷ , R ²⁸ and R ^{29 are the} same or different and independently of one another are hydrogen, (-CC ₄ ) -alkyl or (C ₃ -C ₇ ) -cycloalkyl,

and or

R ²⁷ and R ²⁸ or R ²⁷ and R ²⁹ together with the nitrogen atom to which they are attached form a saturated or partially unsaturated 5- to 7-membered heterocycle with up to three, preferably up to two identical or different heteroatoms from the Form group of N, O and S, and

R ³⁰ and R ^{31 are the} same or different and are, independently of one another, hydrogen, (C ₁ -C ₄ ) -alkyl, (C ₃ -C ₇ ) cycloalkyl, (C ₁ -C ₄ ) alkylsulfonyl,

(CrC ^ hydroxyalkyl, (dC ^ aminoalkyl, di- (Cι-C ₄ ) alkylamino- (CrC ^ alkyl, (QC ^ alkanoyl, (C ₆ -C ₁₄ ) arylcarbonyl, (C ₅ -Cι ₀ ) - Heteroarylcarbonyl, (CrC ^ -alkylaminocarbonyl or

-CH ₂ C (NR ²⁷ R ²⁸ ) = NR ²⁹ , R ³ , R ⁴ , R ⁵ , R ⁶ , R ⁷ and R ^{8 are the} same or different and stand for hydrogen or for (-CC ₆ ) alkyl

and their pharmaceutically acceptable salts and or hydrates.

Stents containing compounds of the formula (I) are particularly preferred,

wherein

R ^{1 stands} for thiophene (thienyl), in particular 2-thiophene, which may optionally be mono- or polysubstituted by halogen, preferably chlorine or bromine, or (C ₁ -C ₈ ) -alkyl, preferably methyl, the (dC ^ -Alkyl may optionally be substituted one or more times by halogen, preferably fluorine,

R ^{2 stands} for one of the following groups: A, AM, DMA, BMA,

B-,

B-M-, B-M-B-, D-M-B-,

wherein: the radical "A" represents phenyl or naphthyl, in particular phenyl;

the radical "B" stands for a 5- or 6-membered aromatic heterocycle which contains up to 2 heteroatoms from the series S, N, NO (N-oxide) and O; the radical "D" stands for a saturated or partially unsaturated 5- or 6-membered heterocycle which contains up to two heteroatoms and or hetero-chain links from the series S, SO, SO ₂ , N, NO (N-oxide) and O;

the remainder "M" for -NH-, -O-, -NH-CH ₂ -, -CH ₂ -NH-, -OCH ₂ -, -CH ₂ O-, -CONH-, -NHCO- or for a covalent one Bond stands;

in which

the groups "A", "B" and "D" defined above can each be optionally substituted one or more times with a radical from the group consisting of halogen; trifluoromethyl; oxo; cyano; pyridyl; (C ₁ -C ₃ ) alkanoyl ; (C ₆ -Cιo) arylcarbonyl; (C ₅ -C ₆ ) heteroarylcarbonyl; (C ₁ -C ₃ ) alkanoyloxymethyloxy; -C (NR ²⁷ R ²⁸ ) = NR ²⁹ ; -CONR ²⁸ R ²⁹ ; -SO ₂ NR ²⁸ R ²⁹ ; -OH; -NR ³⁰ R ³¹ ; (dC ₄ ) alkyl; and cyclopropyl, cyclopentyl or cyclohexyl,

where (-C-C ₄ ) alkyl and cyclopropyl, cyclopentyl or cyclohexyl may in turn optionally be substituted by a radical from the group of cyano; -OH; -OCH ₃ ; -NR ²⁸ R ²⁹ ; -CO (NH) _v (NR ²⁷ R ²⁸ ) and -C (NR ²⁷ R ²⁸ ) = NR ²⁹ ,

in which:

v is either 0 or 1, preferably 0, and

R ²⁷ , R ²⁸ and R ^{29 are the} same or different and are independently hydrogen, (-CC ₄ ) alkyl or cyclopropyl, cyclopentyl or cyclohexyl

and or 97 9R 97 9

R and R or R and R together with the nitrogen atom to which they are attached can form a saturated or partially unsaturated 5- to 7-membered heterocycle with up to two identical or different heteroatoms from the group of N, O and S. , and

R ³⁰ and R ^{31 are} identical or different and independently of one another hydrogen, (dC) alkyl, cyclopropyl, cyclopentyl, cyclohexyl, (dC ₄ ) alkylsulfonyl, (C 1 -C ₄ ) hydroxyalkyl, (C 1 -C ₄ ) aminoalkyl , Di- (C ₁ -C ₄ ) -alkylamino- (C ₁ -C ₄ ) -alkyl, (-C-C ₃ ) -alkanoyl or phenylcarbonyl,

R ³ , R ⁴ , R ⁵ , R ⁶ , R ⁷ and R ^{8 are the} same or different and stand for hydrogen or for (dC ₆ ) alkyl

and their pharmaceutically acceptable salts and / or hydrates.

Stents containing compounds of the formula (I) are particularly preferred,

wherein

R ^{1 represents} 2-thiophene, which may optionally be substituted in the 5-position by a radical from the group chlorine, bromine, methyl or trifluoromethyl,

R represents one of the following groups:

A-,

AT THE-,

D-M-A-,

B-M-A-,

B-, BM,

B-M-B-,

D-M-B-,

in which:

the radical "A" represents phenyl or naphthyl, in particular phenyl;

the radical "B" stands for a 5- or 6-membered aromatic heterocycle which contains up to 2 heteroatoms from the series S, N, NO (N-oxide) and O;

the radical “D” stands for a saturated or partially unsaturated 5- or 6-membered heterocycle which has a nitrogen atom and optionally a further heteroatom and / or hetero chain link from the series S, SO, SO ₂ and O; or bis to two heteroatoms and / or hetero chain links from the

Series contains S, SO, SO ₂ and O;

in which

the previously defined groups "A", "B" and "D" can each be optionally substituted one or more times with a radical from the group of halogen; trifluoromethyl; oxo; cyano; pyridyl; (C_-C ₃ ) alkanoyl; (C ₆ -C ₁₀ ) -

arylcarbonyl; (C ₅ -C ₆ ) heteroarylcarbonyl; (C ₁ -C ₃ ) alkanoyloxymethyloxy; -CONR ²⁸ R ²⁹ ; -SO ₂ NR ²⁸ R ²⁹ ; -OH; -NR ³⁰ R ³¹ ; (dC ₄ ) alkyl; and cyclopropyl, cyclopentyl or cyclohexyl,

where (C_-C) alkyl and cyclopropyl, cyclopentyl or cyclohexyl may in turn optionally be substituted by a radical from the group from cyano; -OH; -OCH ₃ ; -NR ²⁸ R ²⁹ ; -CO (NH) _v (NR ²⁷ R ²⁸ ) and -C (NR ²⁷ R ²⁸ ) = NR ²⁹ ,

in which:

v is either 0 or 1, preferably 0, and

R ²⁷ , R ²⁸ and R ^{29 are} identical or different and independently of one another are hydrogen, (dC ₄ ) -A_kyl or else cyclopropyl, cyclopentyl or cyclohexyl

and or

R ³⁰ and R ^{31 are} identical or different and independently of one another are hydrogen, (C 1 -C ₄ ) alkyl, cyclopropyl, cyclopentyl, cyclohexyl, (dC) alkylsulfonyl, (C 1 -C ₄ ) hydroxyalkyl, (C 1 -C ₄ ) -Aminoalkyl, di- (dC) -alkylamino- (-C-C ₄ ) -alkyl, (Cι-C ₃ ) -alkanoyl or phenylcarbonyl,

R ³ , R ⁴ , R ⁵ , R ⁶ , R ⁷ and R ^{8 are the} same or different and represent hydrogen or (dC ₄ ) alkyl

and their pharmaceutically acceptable salts and / or hydrates. Stents containing compounds of the formula (I) are very particularly preferred.

wherein

R ^{1 represents} 2-thiophene which is substituted in the 5-position by a radical from the group chlorine, bromine, methyl or trifluoromethyl,

R ² stands for DA-:

wherein: the radical "A" represents phenylene;

the radical "D" represents a saturated 5- or 6-membered heterocycle,

which is linked to "A" via a nitrogen atom,

which has a carbonyl group in the direct vicinity of the linking nitrogen atom and

in which a ring carbon member can be replaced by a hetero atom from the series S, N and O;

in which

the previously defined group "A" in the meta position with respect to the linkage to the oxazohdinone can optionally be mono- or disubstituted with a radical from the group of fluorine, chlorine, nitro, amino, trifluoromethyl, methyl or cyano,

R ³ , R ⁴ , R ⁵ , R ⁶ , R ⁷ and R ^{8 represent} hydrogen and their pharmaceutically acceptable salts and / or hydrates.

A stent containing the compound from Example 44 of WO 01/47919 with the following formula is also very particularly preferred

and their pharmaceutically acceptable salts and or hydrates.

With regard to the disclosure of the compounds of the formula (I), for example as regards their preparation, reference is expressly made to the disclosure of WO 01/47919.

The present invention describes the use of one or more compounds of the formula (I), optionally in combination with one or more other active ingredients, for the production of a drug-containing release system, in particular of a drug-containing stent.

In addition, the present invention describes a release system, in particular a stent, which contains one or more compounds of the formula (I), if appropriate in combination with one or more other active compounds, which has a targeted release of one or more compounds of the formula (I ) and any other active substances that may be present at the site of action (drug targeting) and are therefore suitable for the prophylaxis and / or treatment of restenosis and / or thromboses, in particular according to PTCA. The present invention also describes a method for the treatment and / or prophylaxis of thromboses and / or restenosis, one or more compounds of the formula (I) being used in combination with a stent. In this application, the compounds of the formula (I) can be used either systemically or preferably in the form of a stent containing compounds of the formula (I).

While sufficient therapeutic success cannot be achieved in all cases with the active ingredients and stents available to date, the new combination of compounds of the formula (I) with a stent enables more effective treatment and / or prophylaxis of thromboses and / or restenosis. Local application of compounds of the formula (I) in combination with a stent makes it possible to reduce the dose of the medicament required to prevent thrombosis and / or restenosis. Undesired systemic effects can be minimized. At the same time, the local concentration can be increased and thus the effectiveness can be increased.

In addition to the application according to the invention, systemic and / or local administration of further agents for the treatment and / or prophylaxis of

Thromboses and / or restenosis suitable active ingredients such as, for example and preferably, abciximab, eptifibatide, tirofiban, acetylsalicylic acid, ticlopidine or clopidogrel. An additional systemic treatment with compounds of the formula (I) is preferred, in particular by oral administration.

Conventional stents are used to produce the compounds of the formula (I) according to the invention, the stent base body either consisting of metals or non-degradable plastics such as, for example and preferably, polyethylene, polypropylene, polycarbonate, polyurethane and / or polytetrafluoroethylene (PTFE). Furthermore, stents with different constructions of the metal mesh, the different surfaces and Enable folding principles and used as described for example in WO 01/037761, WO 01/037892.

These stents are coated and / or filled with the compounds of the formula (I). Alternatively, compounds of formula (I) in the case of nonmetallic stents can be incorporated directly into the material used to produce the stents.

For coating or filling, carrier materials are mixed with the compounds of the formula (I). The carrier materials used are preferably polymeric carriers, in particular biocompatible, non-biodegradable polymers or polymer mixtures, such as, for example and preferably, polyacrylates and their copolymers, for example and preferably poly (hydroxyethyl) methyl methacrylates; Polyvinyl pyrrolidones; Cellulose esters and ethers; fluorinated polymers such as, for example, and preferably PTFE; Polyvinyl acetates and their copolymers; cross-linked and uncross-linked polyurethanes, polyethers or polyesters; polycarbonates; Polydimethylsiloxanes.

Alternatively, biocompatible, biodegradable polymers or polymer mixtures, such as, for example and preferably, polymers or copolymers of lactide and glycolide, or of caprolactone and glycolide; other polyester; polyorthoesters; polyanhydrides; polyaminoacids; Polysacchari.de; polyiminocarbonates; Polyphosphazenes and poly (ether-ester) copolymers are used as polymeric carriers.

Mixtures of biodegradable and / or non-biodegradable polymers are also suitable as polymeric carriers. These mixtures optimally set the release rate of the active ingredient.

To produce coated or filled stents, the mixtures of compounds of the formula (I) and carrier are dissolved, preferably in suitable solvents. These solutions are then applied to the stent using various techniques, such as spraying, dipping or brushing. After subsequent or simultaneous removal of the solvent, the stent with the active ingredient-containing lacquer is formed. Alternatively, mixtures of compounds can also be used of formula (I) and carrier are melted and applied by the same application methods.

The stents are preferably pretreated in order to enlarge the outer and / or inner stent surface. This increases the loading potential and larger amounts of lacquer (active ingredient / polymer) can be applied. For the pretreatment of the stents, for example, different etching techniques but also treatments with ionized radiation are used. Likewise, micro-pores or cavities can be created in the stents using various techniques.

The active substance contents of the stents coated or filled with compounds of the formula (I) are generally from 0.001% by weight to 50% by weight, preferably from 0.01% by weight to 30% by weight, particularly preferably 0.1% to 15% by weight.

In the case of nonmetallic stents, the compounds of the formula (I) can also be incorporated directly, for example as melt embedding, into the stent base body. In this process, active substance-containing polymeric carrier compositions are processed to the final active substance-containing form by customary processes, for example by injection molding. The active ingredient is usually released by diffusion.

The active substance contents of stents with embedded compounds of the formula (I) are generally from 0.001% by weight to 70% by weight, preferably from 0.01% by weight to 50% by weight, particularly preferably 0.1 % By weight to 30% by weight.

The compounds of the formula (I) containing stents are optionally additionally coated with a membrane. This membrane serves as an example and preferably to control the drug release and / or to protect the active ingredient-containing stents from external influences.

Claims

claims

1. Stents containing one or more compounds of the formula (I)

in which

R ² stands for DA-:

in which:

the radical "A" represents phenylene;

the radical "D" represents a saturated 5- or 6-membered heterocycle,

which is linked to "A" via a nitrogen atom,

which has a carbonyl group in the direct vicinity of the linking nitrogen atom and in which a ring carbon member can be replaced by a hetero atom from the series S, N and O;

in which

R ³ , R ⁴ , R ⁵ , R ⁶ , R ⁷ and R ^{8 represent} hydrogen,

their pharmaceutically acceptable salts, hydrates and / or mixtures thereof.

2. Stents according spoke 1, characterized in that the compound 5- chloro-N - ({(55) -2-oxo-3- [4- (3-oxo-4-morpholinyl) phenyl] -l, 3- oxazolidin-5-yl} methyl) -2-thiophenecarboxamide of the formula

its pharmaceutically acceptable salts, hydrates and / or mixtures thereof.

3. Stents according to claim 1 or 2, which are coated with an additional membrane.

4. Stents according to one of claims 1 to 3, containing at least one further active ingredient.

5. Stents according to one of claims 1 to 4 for the treatment of restenosis according to PTCA.

6. Stents according to one of claims 1 to 4 for the treatment and or prophylaxis of thromboses according to PTCA.

7. Use of compounds of formula (I), as defined in spoke 1, for or in the manufacture of stents.

8. Use of compounds of formula (I), as defined in spoke 1, for the production of stents for the treatment and / or prophylaxis of restenosis and / or thromboses.

9. A process for producing stents, characterized in that stents are coated or filled with one or more compounds of the formula (I) as defined in claim 1.

10. A process for the production of stents, characterized in that one or more compounds of the formula (I), as defined in Claim 1, containing polymeric carrier compositions are formed into stents.

11. A method for the treatment of patients with restenotic arteries by simultaneous application of one or more compounds of the formula (I), as defined in approach 1, and a stent.

12. The method according spoke 11, characterized in that compounds of formula (I), as defined in claim 1, contain in or on the stent are and are released locally.

Process for the treatment and / or prophylaxis of restenosis and / or thrombosis by using stents according to one of the preceding claims in combination with local and / or systemic administration of other active substances suitable for restenosis and / or thrombosis treatment and or prophylaxis.

14. A method for the treatment and or prophylaxis of restenosis and / or thrombosis by using stents according to one of the preceding

Claims in combination with systemic administration of compounds of formula (I) as defined in approach 1.