PH26332A - A process for the preparation of (S)-ethyl-2-oxo-1-pyrrolidineacetamide - Google Patents
A process for the preparation of (S)-ethyl-2-oxo-1-pyrrolidineacetamide Download PDFInfo
- Publication number
- PH26332A PH26332A PH39568A PH39568A PH26332A PH 26332 A PH26332 A PH 26332A PH 39568 A PH39568 A PH 39568A PH 39568 A PH39568 A PH 39568A PH 26332 A PH26332 A PH 26332A
- Authority
- PH
- Philippines
- Prior art keywords
- ethyl
- pyrrolidineacetamide
- oxo
- methylthio
- temperature
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 25
- 238000002360 preparation method Methods 0.000 title claims description 13
- ZDGXMOZHFUQHKZ-LURJTMIESA-N 2-[(3s)-3-ethyl-2-oxopyrrolidin-1-yl]acetamide Chemical compound CC[C@H]1CCN(CC(N)=O)C1=O ZDGXMOZHFUQHKZ-LURJTMIESA-N 0.000 title 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 claims description 12
- 150000001875 compounds Chemical class 0.000 claims description 11
- 239000003153 chemical reaction reagent Substances 0.000 claims description 7
- 239000007868 Raney catalyst Substances 0.000 claims description 6
- NPXOKRUENSOPAO-UHFFFAOYSA-N Raney nickel Chemical group [Al].[Ni] NPXOKRUENSOPAO-UHFFFAOYSA-N 0.000 claims description 6
- 229910000564 Raney nickel Inorganic materials 0.000 claims description 6
- 125000000217 alkyl group Chemical group 0.000 claims description 6
- 239000012442 inert solvent Substances 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- GSYTVXOARWSQSV-BYPYZUCNSA-N L-methioninamide Chemical compound CSCC[C@H](N)C(N)=O GSYTVXOARWSQSV-BYPYZUCNSA-N 0.000 claims description 4
- 125000005843 halogen group Chemical group 0.000 claims description 4
- 238000007327 hydrogenolysis reaction Methods 0.000 claims description 4
- LBTUTDYXOOUODJ-UHFFFAOYSA-N 2-pyrrolidin-1-ylacetamide Chemical compound NC(=O)CN1CCCC1 LBTUTDYXOOUODJ-UHFFFAOYSA-N 0.000 claims description 3
- 150000004820 halides Chemical class 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 125000002816 methylsulfanyl group Chemical group [H]C([H])([H])S[*] 0.000 claims description 3
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 claims description 3
- -1 (aminocarbonyl)-3- (methylthio)propyl Chemical group 0.000 claims description 2
- 206010001488 Aggression Diseases 0.000 claims description 2
- 206010021143 Hypoxia Diseases 0.000 claims description 2
- 239000002253 acid Substances 0.000 claims description 2
- 230000016571 aggressive behavior Effects 0.000 claims description 2
- 125000004432 carbon atom Chemical group C* 0.000 claims description 2
- 210000003169 central nervous system Anatomy 0.000 claims description 2
- 230000001146 hypoxic effect Effects 0.000 claims description 2
- 230000000302 ischemic effect Effects 0.000 claims description 2
- 230000002265 prevention Effects 0.000 claims description 2
- 229910052799 carbon Inorganic materials 0.000 claims 2
- 150000002816 nickel compounds Chemical class 0.000 claims 2
- 125000004429 atom Chemical group 0.000 claims 1
- 229910052736 halogen Inorganic materials 0.000 claims 1
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 18
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 12
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 9
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 9
- 239000000203 mixture Substances 0.000 description 9
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 6
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 6
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 6
- 125000006297 carbonyl amino group Chemical group [H]N([*:2])C([*:1])=O 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- UBQKCCHYAOITMY-UHFFFAOYSA-N pyridin-2-ol Chemical compound OC1=CC=CC=N1 UBQKCCHYAOITMY-UHFFFAOYSA-N 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- FERIUCNNQQJTOY-UHFFFAOYSA-N Butyric acid Natural products CCCC(O)=O FERIUCNNQQJTOY-UHFFFAOYSA-N 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 3
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- FFEARJCKVFRZRR-UHFFFAOYSA-N L-Methionine Natural products CSCCC(N)C(O)=O FFEARJCKVFRZRR-UHFFFAOYSA-N 0.000 description 2
- FFEARJCKVFRZRR-BYPYZUCNSA-N L-methionine Chemical compound CSCC[C@H](N)C(O)=O FFEARJCKVFRZRR-BYPYZUCNSA-N 0.000 description 2
- 229930195722 L-methionine Natural products 0.000 description 2
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 2
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 2
- PWCBMJHINDTXGV-WCCKRBBISA-N [(2s)-1-amino-4-methylsulfanyl-1-oxobutan-2-yl]azanium;chloride Chemical compound Cl.CSCC[C@H](N)C(N)=O PWCBMJHINDTXGV-WCCKRBBISA-N 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 238000004587 chromatography analysis Methods 0.000 description 2
- 239000003480 eluent Substances 0.000 description 2
- 239000000706 filtrate Substances 0.000 description 2
- 229960004452 methionine Drugs 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000000376 reactant Substances 0.000 description 2
- 238000007363 ring formation reaction Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- JRMUNVKIHCOMHV-UHFFFAOYSA-M tetrabutylammonium bromide Chemical compound [Br-].CCCC[N+](CCCC)(CCCC)CCCC JRMUNVKIHCOMHV-UHFFFAOYSA-M 0.000 description 2
- 239000008096 xylene Substances 0.000 description 2
- HNNJFUDLLWOVKZ-VKHMYHEASA-N (2s)-2-aminobutanamide Chemical compound CC[C@H](N)C(N)=O HNNJFUDLLWOVKZ-VKHMYHEASA-N 0.000 description 1
- YAQLSKVCTLCIIE-UHFFFAOYSA-M 2-bromobutanoate Chemical compound CCC(Br)C([O-])=O YAQLSKVCTLCIIE-UHFFFAOYSA-M 0.000 description 1
- CDIIZULDSLKBKV-UHFFFAOYSA-N 4-chlorobutanoyl chloride Chemical compound ClCCCC(Cl)=O CDIIZULDSLKBKV-UHFFFAOYSA-N 0.000 description 1
- HBAQYPYDRFILMT-UHFFFAOYSA-N 8-[3-(1-cyclopropylpyrazol-4-yl)-1H-pyrazolo[4,3-d]pyrimidin-5-yl]-3-methyl-3,8-diazabicyclo[3.2.1]octan-2-one Chemical class C1(CC1)N1N=CC(=C1)C1=NNC2=C1N=C(N=C2)N1C2C(N(CC1CC2)C)=O HBAQYPYDRFILMT-UHFFFAOYSA-N 0.000 description 1
- FERIUCNNQQJTOY-UHFFFAOYSA-M Butyrate Chemical compound CCCC([O-])=O FERIUCNNQQJTOY-UHFFFAOYSA-M 0.000 description 1
- GMZVRMREEHBGGF-UHFFFAOYSA-N Piracetam Chemical compound NC(=O)CN1CCCC1=O GMZVRMREEHBGGF-UHFFFAOYSA-N 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- 150000001413 amino acids Chemical class 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- HYTACLVSJIFYBY-UHFFFAOYSA-N azane;dichloromethane;methanol Chemical compound N.OC.ClCCl HYTACLVSJIFYBY-UHFFFAOYSA-N 0.000 description 1
- ZTZTWQPPCCBBML-UHFFFAOYSA-N azane;ethyl acetate;methanol Chemical compound N.OC.CCOC(C)=O ZTZTWQPPCCBBML-UHFFFAOYSA-N 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 125000003917 carbamoyl group Chemical group [H]N([H])C(*)=O 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 125000001309 chloro group Chemical group Cl* 0.000 description 1
- 239000012043 crude product Substances 0.000 description 1
- RIFGWPKJUGCATF-UHFFFAOYSA-N ethyl chloroformate Chemical compound CCOC(Cl)=O RIFGWPKJUGCATF-UHFFFAOYSA-N 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000012458 free base Substances 0.000 description 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 150000007530 organic bases Chemical group 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000012429 reaction media Substances 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 230000000707 stereoselective effect Effects 0.000 description 1
- 230000001225 therapeutic effect Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D207/00—Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom
- C07D207/02—Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with only hydrogen or carbon atoms directly attached to the ring nitrogen atom
- C07D207/18—Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having one double bond between ring members or between a ring member and a non-ring member
- C07D207/22—Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having one double bond between ring members or between a ring member and a non-ring member 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
- C07D207/24—Oxygen or sulfur atoms
- C07D207/26—2-Pyrrolidones
- C07D207/263—2-Pyrrolidones with only hydrogen atoms or radicals containing only hydrogen and carbon atoms directly attached to other ring carbon atoms
- C07D207/27—2-Pyrrolidones with only hydrogen atoms or radicals containing only hydrogen and carbon atoms directly attached to other ring carbon atoms with substituted hydrocarbon radicals directly attached to the ring nitrogen atom
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Pyrrole Compounds (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Plural Heterocyclic Compounds (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB888827389A GB8827389D0 (en) | 1988-11-23 | 1988-11-23 | Process for preparation of(s)alpha-ethyl-2-oxo-1-pyrrolidineacetamide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| PH26332A true PH26332A (en) | 1992-04-29 |
Family
ID=10647345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PH39568A PH26332A (en) | 1988-11-23 | 1989-11-23 | A process for the preparation of (S)-ethyl-2-oxo-1-pyrrolidineacetamide |
Country Status (17)
| Country | Link |
|---|---|
| KR (1) | KR0157610B1 (no) |
| CN (1) | CN1020604C (no) |
| AT (1) | AT392781B (no) |
| BG (1) | BG51041A3 (no) |
| CY (1) | CY1672A (no) |
| ES (1) | ES2023532A6 (no) |
| FI (1) | FI91961C (no) |
| GB (2) | GB8827389D0 (no) |
| GR (1) | GR1000719B (no) |
| HK (1) | HK102492A (no) |
| HU (1) | HU204508B (no) |
| NO (1) | NO173823C (no) |
| PH (1) | PH26332A (no) |
| PL (1) | PL161781B1 (no) |
| PT (1) | PT92365B (no) |
| RU (1) | RU1797607C (no) |
| SG (1) | SG89392G (no) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9319732D0 (en) | 1993-09-24 | 1993-11-10 | Ucb Sa | Use of (s)-alpha-ethyl-2-oxo-l-pyrrolidineacetamide for the treatment of anxiety |
| US6107492A (en) * | 1998-05-08 | 2000-08-22 | Ucb, S.A. | Process for the preparation of levetiracetam |
| NZ518901A (en) | 1999-12-01 | 2004-08-27 | Ucb S | A levetiracetam alone or in combination with a compound inducing neural inhibition mediated by the GABA receptors for treatment of chronic pain, bipolar disorder, mania and migraine |
| GB0004297D0 (en) | 2000-02-23 | 2000-04-12 | Ucb Sa | 2-oxo-1 pyrrolidine derivatives process for preparing them and their uses |
| EP1517893A2 (en) * | 2003-02-03 | 2005-03-30 | Teva Pharmaceutical Industries Limited | Process for producing levetiracetam |
| ES2214147B1 (es) * | 2003-02-28 | 2005-10-01 | Farma-Lepori S.A. | Procedimiento de obtencion de un agente antiepileptico. |
| CA2538938C (en) * | 2003-09-24 | 2011-08-09 | Ucb, S.A. | Process for preparing 2-oxo-1-pyrrolidine derivatives |
| CA2488325C (en) | 2004-11-22 | 2010-08-24 | Apotex Pharmachem Inc. | Improved process for the preparation of (s)-alpha-ethyl-2-oxo-1-pyrrolidineacetamide and (r)-alpha-ethyl-2-oxo-1-pyrrolidineacetamide |
| US8178533B2 (en) | 2005-06-01 | 2012-05-15 | Ucb Pharma, S.A. | 2-oxo-1-pyrrolidine derivatives, processes for preparing them and their uses |
| US8338621B2 (en) | 2005-12-21 | 2012-12-25 | Ucb S.A. | Process for the preparation of 2-oxo-1-pyrrolidine derivatives |
| WO2009050735A1 (en) * | 2007-10-15 | 2009-04-23 | Lupin Limited | A novel polymorph of levetiracetam and a process for its preparation |
| EP2147911A1 (en) | 2008-07-24 | 2010-01-27 | ZaCh System S.p.A. | Process for the preparation of levetiracetam |
| US7939676B2 (en) | 2009-09-17 | 2011-05-10 | Zach System S.P.A. | Process for the preparation of levetiracetam |
| ME03518B (me) | 2014-01-21 | 2020-04-20 | Janssen Pharmaceutica Nv | Kombinacije koje obuhvataju pozitivne alosterične modulatore ili ortosterične agoniste metabotropnog glutamatergičnog receptora podtipa 2 i njihova primjena |
| WO2015110435A1 (en) | 2014-01-21 | 2015-07-30 | Janssen Pharmaceutica Nv | Combinations comprising positive allosteric modulators or orthosteric agonists of metabotropic glutamatergic receptor subtype 2 and their use |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1309692A (en) * | 1970-02-13 | 1973-03-14 | Ucb Sa | N-substituted lactams |
| GB8412357D0 (en) * | 1984-05-15 | 1984-06-20 | Ucb Sa | Pharmaceutical composition |
| GB8412358D0 (en) * | 1984-05-15 | 1984-06-20 | Ucb Sa | Pharmaceutical composition |
-
1988
- 1988-11-23 GB GB888827389A patent/GB8827389D0/en active Pending
-
1989
- 1989-11-20 BG BG90398A patent/BG51041A3/xx unknown
- 1989-11-20 GR GR890100769A patent/GR1000719B/el not_active IP Right Cessation
- 1989-11-21 GB GB8926244A patent/GB2225322B/en not_active Expired - Lifetime
- 1989-11-21 PT PT92365A patent/PT92365B/pt not_active IP Right Cessation
- 1989-11-22 FI FI895562A patent/FI91961C/fi active IP Right Grant
- 1989-11-22 NO NO894649A patent/NO173823C/no unknown
- 1989-11-22 PL PL89282413A patent/PL161781B1/pl unknown
- 1989-11-22 RU SU4742434A patent/RU1797607C/ru active
- 1989-11-22 CN CN89108764A patent/CN1020604C/zh not_active Expired - Fee Related
- 1989-11-22 ES ES8903978A patent/ES2023532A6/es not_active Expired - Lifetime
- 1989-11-22 HU HU896132A patent/HU204508B/hu not_active IP Right Cessation
- 1989-11-22 AT AT2666/89A patent/AT392781B/de not_active IP Right Cessation
- 1989-11-23 KR KR1019890017038A patent/KR0157610B1/ko not_active IP Right Cessation
- 1989-11-23 PH PH39568A patent/PH26332A/en unknown
-
1992
- 1992-09-05 SG SG893/92A patent/SG89392G/en unknown
- 1992-12-17 HK HK1024/92A patent/HK102492A/xx not_active IP Right Cessation
-
1993
- 1993-05-14 CY CY1672A patent/CY1672A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| HK102492A (en) | 1992-12-24 |
| PL161781B1 (en) | 1993-07-30 |
| GR890100769A (en) | 1990-12-31 |
| NO894649L (no) | 1990-05-25 |
| CN1042904A (zh) | 1990-06-13 |
| GB2225322A (en) | 1990-05-30 |
| HU896132D0 (en) | 1990-02-28 |
| RU1797607C (ru) | 1993-02-23 |
| ATA266689A (de) | 1990-11-15 |
| GB8926244D0 (en) | 1990-01-10 |
| ES2023532A6 (es) | 1992-01-16 |
| PT92365A (pt) | 1990-05-31 |
| SG89392G (en) | 1992-12-04 |
| PT92365B (pt) | 1995-07-18 |
| KR900007797A (ko) | 1990-06-02 |
| NO894649D0 (no) | 1989-11-22 |
| NO173823B (no) | 1993-11-01 |
| GR1000719B (el) | 1992-11-23 |
| AT392781B (de) | 1991-06-10 |
| CY1672A (en) | 1993-05-14 |
| NO173823C (no) | 1994-02-09 |
| FI91961C (fi) | 1994-09-12 |
| HUT53072A (en) | 1990-09-28 |
| GB8827389D0 (en) | 1988-12-29 |
| GB2225322B (en) | 1992-03-25 |
| BG51041A3 (en) | 1993-01-15 |
| FI895562A0 (fi) | 1989-11-22 |
| FI91961B (fi) | 1994-05-31 |
| HU204508B (en) | 1992-01-28 |
| CN1020604C (zh) | 1993-05-12 |
| KR0157610B1 (ko) | 1998-11-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| PH26332A (en) | A process for the preparation of (S)-ethyl-2-oxo-1-pyrrolidineacetamide | |
| US5153358A (en) | Process for the preparation of alpha-alkylated alpha-amino acids and alpha-halogenated alpha-amino acids | |
| US5424454A (en) | Process for the stereoselective preparation of l-alanyl-l-proline | |
| EP1566376A1 (en) | Preparation of amino acid amides | |
| AU703927B2 (en) | 7-amino-2-heptenoates and their use in the preparation of methylphenidate | |
| MXPA98007879A (en) | 7-amino-2-heptenoatos and its use in the preparation of metilfenid | |
| US4910320A (en) | Process for preparing 3-pyrrolidinol | |
| US4642351A (en) | Preparation of N-substituted imidazolidinones and N-substituted 2-thionimidazolidinones | |
| EP1879861A2 (en) | Process for preparing levetiracetam and racemization of (r)- and (s)-2-amino butynamide and the corresponding acid derivatives | |
| EP1554235B1 (en) | Process for synthesizing l-y-methylene glutamic acid and analogs | |
| EP0784608B1 (en) | The manufacture of levobupivacaine and analogues thereof from l-lysine | |
| KR0136706B1 (ko) | 광학 활성이 있는 3-아미노 피롤리딘 유도체의 제조방법 | |
| CA2166061C (en) | Novel processes for preparing (s)-4-amino-hepta-5,6-dienoic acid and intermediates thereof | |
| Misiti et al. | Synthesis of (3R)-and (3S)-3, 4-Diamino-Butyric Acid from L-Aspartic Acid | |
| US4789746A (en) | Process for the preparation of the (+)-antipode of (E)-1-cyclohexyl-4,4-dimethyl-3-hydroxy-2-(1,2,4-triazol-1-yl)-pent-1-ene | |
| KR820002047B1 (ko) | 피페리딘 유도체의 제조방법 | |
| Lee et al. | Efficient synthesis of a new amino acid,(2S, 3R, 4R)-4-chloro-3-hydroxyproline. | |
| AU782818C (en) | Process for producing substituted alkylamine derivative | |
| GB2116553A (en) | Preparation of nitriles and thioamides of fused ring pyridine derivatives | |
| GB2235452A (en) | Process for preparing a 4-cyclohexyl-proline | |
| ES2099014A1 (es) | Nuevos eteres de oxima quirales derivados del limoneno, procedimiento para su preparacion y aplicaciones. | |
| JPS63222156A (ja) | β−ラクタム中間体 | |
| CA2244364A1 (en) | Resolution of 4-cyano-4-(3,4-dimethoxyphenyl)-5-methylhexanoic acid | |
| JPH01121297A (ja) | Ｎ−置換−アミノ酸誘導体の製造方法 |