WO1998031671A1 - Derives de pyridone, leur preparation et leur utilisation comme intermediaires de synthese - Google Patents
Derives de pyridone, leur preparation et leur utilisation comme intermediaires de synthese Download PDFInfo
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- WO1998031671A1 WO1998031671A1 PCT/FR1998/000044 FR9800044W WO9831671A1 WO 1998031671 A1 WO1998031671 A1 WO 1998031671A1 FR 9800044 W FR9800044 W FR 9800044W WO 9831671 A1 WO9831671 A1 WO 9831671A1
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- 0 CC(*)N(C(C)=CC(O)=C1[N+]([O-])=O)C1=C Chemical compound CC(*)N(C(C)=CC(O)=C1[N+]([O-])=O)C1=C 0.000 description 8
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D213/00—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members
- C07D213/02—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members
- C07D213/04—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
- C07D213/60—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
- C07D213/62—Oxygen or sulfur atoms
- C07D213/63—One oxygen atom
- C07D213/64—One oxygen atom attached in position 2 or 6
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D213/00—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members
- C07D213/02—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members
- C07D213/04—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
- C07D213/60—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
- C07D213/62—Oxygen or sulfur atoms
- C07D213/69—Two or more oxygen atoms
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D213/00—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members
- C07D213/02—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members
- C07D213/04—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
- C07D213/60—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
- C07D213/62—Oxygen or sulfur atoms
- C07D213/70—Sulfur atoms
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D213/00—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members
- C07D213/02—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members
- C07D213/04—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
- C07D213/60—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
- C07D213/62—Oxygen or sulfur atoms
- C07D213/70—Sulfur atoms
- C07D213/71—Sulfur atoms to which a second hetero atom is attached
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D213/00—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members
- C07D213/02—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members
- C07D213/04—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
- C07D213/60—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
- C07D213/72—Nitrogen atoms
- C07D213/73—Unsubstituted amino or imino radicals
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D213/00—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members
- C07D213/02—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members
- C07D213/04—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
- C07D213/60—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
- C07D213/72—Nitrogen atoms
- C07D213/75—Amino or imino radicals, acylated by carboxylic or carbonic acids, or by sulfur or nitrogen analogues thereof, e.g. carbamates
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D213/00—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members
- C07D213/02—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members
- C07D213/04—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
- C07D213/60—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
- C07D213/72—Nitrogen atoms
- C07D213/76—Nitrogen atoms to which a second hetero atom is attached
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D409/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms
- C07D409/02—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms containing two hetero rings
- C07D409/06—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms containing two hetero rings linked by a carbon chain containing only aliphatic carbon atoms
Definitions
- the present invention relates to pyridone derivatives, their preparation and their use as synthesis intermediates.
- the compounds according to the invention correspond to formula (I)
- R represents either a group -N0 2 or a group -NHR 3 , R 3 being a hydrogen atom, a group -C0R 4 (where R 4 is chosen from (C 1 -C 4 ) alkyl, aryl and aryl (C 1 -C 4 ) alkyl), a group -COOR 5 (where R 5 is chosen from the groups (C 1 -C 4 ) alkyl and aryl (C;] _- C 4 ) alkyl), a group - CONHR 6 a group -S0 2 R 6 (where R 6 is chosen from (C 1 -C 5 ) alkyl, aryl and aryl (C 1 -C 4 ) alkyl groups), a group -S0 2 NR 7 R 8 ( where R 7 and R 8 are each independently of one another a hydrogen atom or a (C 1 -C 4 ) alkyl group or form with the nitrogen atom which carries them a morpholine group),
- R 2 represents either a hydrogen atom, or a (C 1 -C) alkyl group, or an arylmethyl group
- X represents either an oxygen or sulfur atom, or a group -CH 2 -, -S0 2 _ or -NR X - where R is as defined above and
- Y represents either a hydrogen atom or a (C 1 -C 6 ) straight or branched alkyl group.
- the aryl groups are aromatic carbon rings, for example phenyl, naphthyl or anthracenyl, and the heteroaryl groups are aromatic heterocycles, for example pyridine or thiophene.
- the compounds can exist in the form of pure racemates or enantiomers or as a mixture of enantiomers which also form part of the invention.
- R x represents either a (C] _- C 4 ) straight or branched alkyl group, or a cyclo (C 3 -C 8 ) alkyl group
- X an atom of oxygen
- R 2 a hydrogen atom or a (C 1 -C 4 ) alkyl group
- R 3 and Y are as defined above
- compound of formula (Ib) corresponding either with a compound R 3 -Hal where Hal represents a halogen atom, or with a compound of formula R 6 NCO, or it is subjected to a reductive amination when R 3 represents an aryl group ( C 1 -C 4 ) alkyl.
- R 3 represents an aryl group ( C 1 -C 4 ) alkyl.
- R x represents either an aryl group optionally substituted by a halogen atom, a (C 1 -C 5 ) straight or branched alkyl group, a trifluoromethyl group, a cyano group or a (C 1 -C 4 ) acylamino group, either an aryl (C 1 -C 4 ) alkyl group optionally substituted as above, or a heteroaryl group
- X represents either a sulfur atom or a group - CH 2 -, -S0 2 - or -NR ⁇
- R 2 represents a hydrogen atom or a (C 3 _-C 4 ) alkyl group
- R 3 and Y are as defined above or in which R x represents either a (C 1 -C 4 ) straight or branched alkyl group, either a cyclo (C 3 -C 8 ) alkyl group, X a sulfur atom or
- R 6 NCO for R 3 - C0NHR 6
- R 3 CH ⁇ / NaBH 3 CN for R 3 arylalkyl
- organometallic of formula R 1 CH 2 Cu (CN) ZnHal where Hal represents a halogen atom (for X -CH 2 -) and a compound of formula (le) is obtained which corresponds to a compound of formula (I) in which R represents a group -N0 2 .
- a compound of formula (If) which corresponds to a compound of formula (I) in which R represents a group -NH 2 then we submit the compound of formula (le) corresponding to a hydrogenation, when X represents an atom of oxygen or a group -CH 2 -, -S0 2 - or -NR X -, or to a treatment with zinc in an acid medium when X represents a sulfur atom.
- the compounds of formula (I) in which X represents a group -SO 2 - can also be prepared from the corresponding compound of formula (I) in which X represents a sulfur atom by treatment with 3-chloroperoxy-benzoic acid .
- the starting compounds are commercially available or described in the literature or can be prepared according to methods which are described therein or which are known to those skilled in the art.
- organometallics of formula R 1 CH 2 Cu (CN) ZnHal are prepared according to the method described by P. Knochel et al., Chemical Reviews, (1993), H, 2117.
- the product obtained is hydrolyzed according to the procedure of Example 3 using 4.8 ml of a 1N aqueous sodium hydroxide solution. 1.1 g of product are obtained.
- This compound is prepared from 5 g (13.4 mmol) of 6-methyl-3-nitro-2-oxo-4- [[(trifluoromethyl) sulfonyl] oxy] - 1,2-dihydropyridine-1-acetate methyl and 2.9 g (16.4 mmol) of 3-bromomethylthiophene according to the method described in 1.5.
- This compound is prepared from 3.2 g (11 mmol) of
- This compound is prepared from 5 g (13.4 mmol) of
- Example 12 (Compound No. 42) 4- [[4- (1, 1-dimethylethyl) phenyl] methyl] -6-methyl -2 -oxo-3- [[(phenylmethoxy) carbonyl] amino] -1,2 -dihydropyridine-l- acetic
- This compound is prepared from 11 g (29.4 mmol) of 6-methyl-3-nitro-2-oxo-4- [[(trifluoromethyl) sulfonyl] oxy] - 1, 2-dihydropyridine-1-acetate methyl and 10 g (52.9 mmol) of (4-fluorophenyl) methyl bromide according to the method described in 1.5.
- Example 17 6-methyl-3-nitro-2-oxo-4- [[4- (trifluoromethyl) phenyl] methyl] -1,2-dihydropyridine-1-acetic acid
- Example 19 (Compound No. 33) 4- [(4 -cyanophenyl) methyl] -3- [(methoxycarbonyl) amino] -6- methyl -2 -oxo-1,2-dihydropyridine- 1-acetic acid
- This compound is prepared from 3 g (8 mmol) of 6-methyl -
- Example 21 (compound 38) 4- (cyclohexylmethyl) -6-methyl-2 -oxo-3- [[(phenylmethoxy) carbonyl] amino] -1,2-dihydropyridine-1-acetic acid
- 2-oxo-1,2-dihydropyridine-1-phenylmethyl acetate It is prepared from 6.6 g (14.6 mmol) of 6-methyl-3-nitro-2-oxo-4- [[(trifluoromethyl ) suifonyl] oxy] -1,2-dihydropyridin-1-phenylmethyl acetate and 4.58 g (20 mmol) of (4-methoxycarbonyl) phenylmethyl bromide according to the method described in Example 1.5, the addition of the intermediate zinc compound being carried out at -30 ° C.
- Example 30 6-methyl-2-oxo-3- [[(phenylmethoxy) carbonyl] amino] -4- (phenylthio) -1,2-dihydropyridine-1-acetic acid
- reaction medium is concentrated under vacuum and 8 ml of water and 5.8 ml of a 1N aqueous hydrochloric acid solution are added.
- the precipitate is filtered, rinsed with water and dried under vacuum. . 1.39 g of product are obtained in the form of a pale yellow powder.
- Example 33 (Compound No. 31) 3- [(methoxycarbonyl) amino] -6-methyl-2-oxo-4- (phenylsul-fonyl) -1,2-dihydropyridine-l-acetic acid
- the compounds of formula (I) according to the invention are useful as synthesis intermediates.
- R, R x and X are as defined above and R 9 and R ' 9 each independently of one another represent a hydrogen atom or a (C 1 -C 4 ) alkyl group.
- R 9 and R ' 9 each independently of one another represent a hydrogen atom or a (C 1 -C 4 ) alkyl group.
- a compound of formula (I) is reacted in which R, R ⁇ and X are as defined above and R 2 represents a hydrogen atom with N-hydroxysuccinimide in the presence of a coupling agent such as for example 1, 3-dicyclohexylcar-bodiimide to prepare a compound of formula (VII) which is condensed with a compound of formula (VIII) in which R 10 and R X1 together represent the residue of a dihydroxylated compound such as for example butane-2 , 3-diol, 2,3-dimethylbutane-2, 3-diol or (la, 3a, 5a) -2,6,6- trimethylbicyclo [3.1.1] heptane-2, 3-diol [(+) - ⁇ -pinanediol], in the presence of a base such as for example triethylamine and an intermediate compound is obtained which is treated with phenylboronic acid.
- a base such as for example triethylamine and
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/341,574 US6252082B1 (en) | 1997-01-16 | 1998-01-13 | Pyridone derivatives, their preparation and their use as synthesis intermediates |
JP53331198A JP2001513079A (ja) | 1997-01-16 | 1998-01-13 | ピリドン誘導体、その製造法およびそれらの合成中間体としての用途 |
EP98902060A EP1019376A1 (fr) | 1997-01-16 | 1998-01-13 | Derives de pyridone, leur preparation et leur utilisation comme intermediaires de synthese |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR97/00378 | 1997-01-16 | ||
FR9700378A FR2758326B1 (fr) | 1997-01-16 | 1997-01-16 | Derives de pyridone, leur prepaparation et leur utilisation comme intermediaires de synthese |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1998031671A1 true WO1998031671A1 (fr) | 1998-07-23 |
Family
ID=9502640
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR1998/000044 WO1998031671A1 (fr) | 1997-01-16 | 1998-01-13 | Derives de pyridone, leur preparation et leur utilisation comme intermediaires de synthese |
Country Status (5)
Country | Link |
---|---|
US (1) | US6252082B1 (fr) |
EP (1) | EP1019376A1 (fr) |
JP (1) | JP2001513079A (fr) |
FR (1) | FR2758326B1 (fr) |
WO (1) | WO1998031671A1 (fr) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6867217B1 (en) * | 1999-05-19 | 2005-03-15 | Pharmacia Corporation | Substituted polycyclic aryl and heteroaryl pyridones useful for selective inhibition of the coagulation cascade |
WO2007104034A2 (fr) * | 2006-03-08 | 2007-09-13 | Takeda San Diego, Inc. | Activateurs de la glucokinase |
JP5419706B2 (ja) * | 2006-12-20 | 2014-02-19 | タケダ カリフォルニア インコーポレイテッド | グルコキナーゼアクチベーター |
WO2008116107A2 (fr) | 2007-03-21 | 2008-09-25 | Takeda San Diego, Inc. | Activateurs de glucokinase |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0677525A1 (fr) * | 1994-04-12 | 1995-10-18 | Synthelabo | Dérivés d'acides aminoboroniques, leur préparation et leur utilisation comme intermédiaires de synthèse |
EP0718307A2 (fr) * | 1994-12-23 | 1996-06-26 | Synthelabo | Dérivés de 1-oxo-2-(phénylsulfonyl-amino)pentylpipéridine, leur préparation et leur application en thérapeutique |
-
1997
- 1997-01-16 FR FR9700378A patent/FR2758326B1/fr not_active Expired - Fee Related
-
1998
- 1998-01-13 EP EP98902060A patent/EP1019376A1/fr not_active Ceased
- 1998-01-13 US US09/341,574 patent/US6252082B1/en not_active Expired - Fee Related
- 1998-01-13 JP JP53331198A patent/JP2001513079A/ja active Pending
- 1998-01-13 WO PCT/FR1998/000044 patent/WO1998031671A1/fr not_active Application Discontinuation
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0677525A1 (fr) * | 1994-04-12 | 1995-10-18 | Synthelabo | Dérivés d'acides aminoboroniques, leur préparation et leur utilisation comme intermédiaires de synthèse |
EP0718307A2 (fr) * | 1994-12-23 | 1996-06-26 | Synthelabo | Dérivés de 1-oxo-2-(phénylsulfonyl-amino)pentylpipéridine, leur préparation et leur application en thérapeutique |
Also Published As
Publication number | Publication date |
---|---|
US6252082B1 (en) | 2001-06-26 |
JP2001513079A (ja) | 2001-08-28 |
EP1019376A1 (fr) | 2000-07-19 |
FR2758326B1 (fr) | 1999-02-12 |
FR2758326A1 (fr) | 1998-07-17 |
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