CS70091A2 - Method of aspartame production - Google Patents
Method of aspartame production Download PDFInfo
- Publication number
- CS70091A2 CS70091A2 CS91700A CS70091A CS70091A2 CS 70091 A2 CS70091 A2 CS 70091A2 CS 91700 A CS91700 A CS 91700A CS 70091 A CS70091 A CS 70091A CS 70091 A2 CS70091 A2 CS 70091A2
- Authority
- CS
- Czechoslovakia
- Prior art keywords
- dioxopiperazine
- acetate
- alkyl
- acyl
- compound
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 77
- IAOZJIPTCAWIRG-QWRGUYRKSA-N aspartame Chemical compound OC(=O)C[C@H](N)C(=O)N[C@H](C(=O)OC)CC1=CC=CC=C1 IAOZJIPTCAWIRG-QWRGUYRKSA-N 0.000 title claims abstract description 7
- 235000010357 aspartame Nutrition 0.000 title claims 4
- 108010011485 Aspartame Proteins 0.000 title claims 3
- 239000000605 aspartame Substances 0.000 title claims 3
- 229960003438 aspartame Drugs 0.000 title claims 3
- 238000004519 manufacturing process Methods 0.000 title abstract description 11
- QTBSBXVTEAMEQO-UHFFFAOYSA-N acetic acid Substances CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims abstract description 74
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims abstract description 63
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 75
- 125000000217 alkyl group Chemical group 0.000 claims description 68
- 150000001875 compounds Chemical class 0.000 claims description 53
- 125000004122 cyclic group Chemical group 0.000 claims description 37
- 125000004432 carbon atom Chemical group C* 0.000 claims description 36
- CKLJMWTZIZZHCS-REOHCLBHSA-N L-aspartic acid Chemical compound OC(=O)[C@@H](N)CC(O)=O CKLJMWTZIZZHCS-REOHCLBHSA-N 0.000 claims description 32
- 238000002360 preparation method Methods 0.000 claims description 30
- 125000002252 acyl group Chemical group 0.000 claims description 27
- -1 alkoxide compound Chemical class 0.000 claims description 26
- 239000000203 mixture Substances 0.000 claims description 26
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 24
- 239000002253 acid Substances 0.000 claims description 23
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 21
- 238000006243 chemical reaction Methods 0.000 claims description 20
- 239000001257 hydrogen Substances 0.000 claims description 20
- 229910052739 hydrogen Inorganic materials 0.000 claims description 20
- 125000003118 aryl group Chemical group 0.000 claims description 18
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 18
- 239000003795 chemical substances by application Substances 0.000 claims description 16
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 15
- 239000003054 catalyst Substances 0.000 claims description 15
- 239000011541 reaction mixture Substances 0.000 claims description 15
- WFDIJRYMOXRFFG-UHFFFAOYSA-N Acetic anhydride Chemical compound CC(=O)OC(C)=O WFDIJRYMOXRFFG-UHFFFAOYSA-N 0.000 claims description 14
- HUMNYLRZRPPJDN-UHFFFAOYSA-N benzaldehyde Chemical compound O=CC1=CC=CC=C1 HUMNYLRZRPPJDN-UHFFFAOYSA-N 0.000 claims description 14
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 claims description 14
- 229910000041 hydrogen chloride Inorganic materials 0.000 claims description 14
- 239000002904 solvent Substances 0.000 claims description 13
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 12
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims description 11
- 229960005261 aspartic acid Drugs 0.000 claims description 11
- OJURWUUOVGOHJZ-UHFFFAOYSA-N methyl 2-[(2-acetyloxyphenyl)methyl-[2-[(2-acetyloxyphenyl)methyl-(2-methoxy-2-oxoethyl)amino]ethyl]amino]acetate Chemical compound C=1C=CC=C(OC(C)=O)C=1CN(CC(=O)OC)CCN(CC(=O)OC)CC1=CC=CC=C1OC(C)=O OJURWUUOVGOHJZ-UHFFFAOYSA-N 0.000 claims description 11
- 150000002148 esters Chemical class 0.000 claims description 10
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 claims description 9
- WMFOQBRAJBCJND-UHFFFAOYSA-M Lithium hydroxide Chemical compound [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 claims description 9
- 239000012442 inert solvent Substances 0.000 claims description 9
- 150000004702 methyl esters Chemical class 0.000 claims description 9
- 239000012452 mother liquor Substances 0.000 claims description 9
- 230000007935 neutral effect Effects 0.000 claims description 9
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 8
- 229910021529 ammonia Inorganic materials 0.000 claims description 8
- 238000005984 hydrogenation reaction Methods 0.000 claims description 8
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 8
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 7
- QNGNSVIICDLXHT-UHFFFAOYSA-N para-ethylbenzaldehyde Natural products CCC1=CC=C(C=O)C=C1 QNGNSVIICDLXHT-UHFFFAOYSA-N 0.000 claims description 7
- 150000003839 salts Chemical class 0.000 claims description 7
- 239000007858 starting material Substances 0.000 claims description 7
- CKLJMWTZIZZHCS-UHFFFAOYSA-N D-OH-Asp Natural products OC(=O)C(N)CC(O)=O CKLJMWTZIZZHCS-UHFFFAOYSA-N 0.000 claims description 6
- CKLJMWTZIZZHCS-UWTATZPHSA-N L-Aspartic acid Natural products OC(=O)[C@H](N)CC(O)=O CKLJMWTZIZZHCS-UWTATZPHSA-N 0.000 claims description 6
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 6
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 claims description 5
- 239000006184 cosolvent Substances 0.000 claims description 5
- 229910052763 palladium Inorganic materials 0.000 claims description 5
- 239000001632 sodium acetate Substances 0.000 claims description 5
- 235000017281 sodium acetate Nutrition 0.000 claims description 5
- COXKWXFZCRVVQB-VKHMYHEASA-N (2s)-2-[(2-chloroacetyl)amino]butanedioic acid Chemical compound OC(=O)C[C@@H](C(O)=O)NC(=O)CCl COXKWXFZCRVVQB-VKHMYHEASA-N 0.000 claims description 4
- WYYUBJAMROQJSF-QWRGUYRKSA-N (3s)-4-[[(1s)-1-carboxy-2-phenylethyl]amino]-3-formamido-4-oxobutanoic acid Chemical compound OC(=O)C[C@H](NC=O)C(=O)N[C@H](C(O)=O)CC1=CC=CC=C1 WYYUBJAMROQJSF-QWRGUYRKSA-N 0.000 claims description 4
- VGCXGMAHQTYDJK-UHFFFAOYSA-N Chloroacetyl chloride Chemical compound ClCC(Cl)=O VGCXGMAHQTYDJK-UHFFFAOYSA-N 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- XBDQKXXYIPTUBI-UHFFFAOYSA-N dimethylselenoniopropionate Natural products CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 claims description 4
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- 229910052697 platinum Inorganic materials 0.000 claims description 4
- 229910052703 rhodium Inorganic materials 0.000 claims description 4
- 239000010948 rhodium Substances 0.000 claims description 4
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 claims description 4
- 238000007363 ring formation reaction Methods 0.000 claims description 4
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 3
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 claims description 3
- 150000001412 amines Chemical class 0.000 claims description 3
- 150000008064 anhydrides Chemical group 0.000 claims description 3
- 235000003704 aspartic acid Nutrition 0.000 claims description 3
- OQFSQFPPLPISGP-UHFFFAOYSA-N beta-carboxyaspartic acid Natural products OC(=O)C(N)C(C(O)=O)C(O)=O OQFSQFPPLPISGP-UHFFFAOYSA-N 0.000 claims description 3
- 229910052700 potassium Inorganic materials 0.000 claims description 3
- 239000011591 potassium Substances 0.000 claims description 3
- 235000019260 propionic acid Nutrition 0.000 claims description 3
- 230000035484 reaction time Effects 0.000 claims description 3
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 3
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 claims description 2
- 235000019253 formic acid Nutrition 0.000 claims description 2
- DUWWHGPELOTTOE-UHFFFAOYSA-N n-(5-chloro-2,4-dimethoxyphenyl)-3-oxobutanamide Chemical compound COC1=CC(OC)=C(NC(=O)CC(C)=O)C=C1Cl DUWWHGPELOTTOE-UHFFFAOYSA-N 0.000 claims description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims 6
- 229910052796 boron Inorganic materials 0.000 claims 6
- 125000005907 alkyl ester group Chemical group 0.000 claims 5
- 125000004429 atom Chemical group 0.000 claims 3
- 239000003153 chemical reaction reagent Substances 0.000 claims 3
- 229910052751 metal Inorganic materials 0.000 claims 3
- 239000002184 metal Substances 0.000 claims 3
- IXVJKFCFNGQJTG-UHFFFAOYSA-N 3-oxopropanoyl 3-oxopropanoate Chemical group O=CCC(=O)OC(=O)CC=O IXVJKFCFNGQJTG-UHFFFAOYSA-N 0.000 claims 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 claims 2
- 150000001242 acetic acid derivatives Chemical class 0.000 claims 1
- 150000001299 aldehydes Chemical class 0.000 claims 1
- 150000002431 hydrogen Chemical class 0.000 claims 1
- 239000011236 particulate material Substances 0.000 claims 1
- WYVAMUWZEOHJOQ-UHFFFAOYSA-N propionic anhydride Chemical group CCC(=O)OC(=O)CC WYVAMUWZEOHJOQ-UHFFFAOYSA-N 0.000 claims 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 claims 1
- 239000012429 reaction media Substances 0.000 claims 1
- 239000000543 intermediate Substances 0.000 abstract description 9
- 239000000243 solution Substances 0.000 description 37
- COLNVLDHVKWLRT-QMMMGPOBSA-N L-phenylalanine Chemical compound OC(=O)[C@@H](N)CC1=CC=CC=C1 COLNVLDHVKWLRT-QMMMGPOBSA-N 0.000 description 12
- 239000007787 solid Substances 0.000 description 11
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 9
- 229960005190 phenylalanine Drugs 0.000 description 8
- MFRIHAYPQRLWNB-UHFFFAOYSA-N sodium tert-butoxide Chemical compound [Na+].CC(C)(C)[O-] MFRIHAYPQRLWNB-UHFFFAOYSA-N 0.000 description 8
- 230000015572 biosynthetic process Effects 0.000 description 7
- 239000000047 product Substances 0.000 description 7
- 102100022997 Acidic leucine-rich nuclear phosphoprotein 32 family member A Human genes 0.000 description 6
- 101000757200 Homo sapiens Acidic leucine-rich nuclear phosphoprotein 32 family member A Proteins 0.000 description 6
- 230000007062 hydrolysis Effects 0.000 description 6
- 238000006460 hydrolysis reaction Methods 0.000 description 6
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 5
- 235000011114 ammonium hydroxide Nutrition 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 238000004128 high performance liquid chromatography Methods 0.000 description 5
- JMMWKPVZQRWMSS-UHFFFAOYSA-N isopropanol acetate Natural products CC(C)OC(C)=O JMMWKPVZQRWMSS-UHFFFAOYSA-N 0.000 description 5
- 229940011051 isopropyl acetate Drugs 0.000 description 5
- GWYFCOCPABKNJV-UHFFFAOYSA-M isovalerate Chemical compound CC(C)CC([O-])=O GWYFCOCPABKNJV-UHFFFAOYSA-M 0.000 description 5
- 238000010992 reflux Methods 0.000 description 5
- 239000000725 suspension Substances 0.000 description 5
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 4
- 239000012044 organic layer Substances 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 description 3
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 description 3
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 125000000218 acetic acid group Chemical group C(C)(=O)* 0.000 description 3
- 230000002378 acidificating effect Effects 0.000 description 3
- 239000012141 concentrate Substances 0.000 description 3
- 239000000706 filtrate Substances 0.000 description 3
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 description 3
- 238000002955 isolation Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000003039 volatile agent Substances 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- YLQBMQCUIZJEEH-UHFFFAOYSA-N Furan Chemical compound C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 2
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 2
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 2
- 150000007513 acids Chemical class 0.000 description 2
- 238000005917 acylation reaction Methods 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 2
- 230000020176 deacylation Effects 0.000 description 2
- 238000005947 deacylation reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052740 iodine Inorganic materials 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- KWGKDLIKAYFUFQ-UHFFFAOYSA-M lithium chloride Chemical compound [Li+].[Cl-] KWGKDLIKAYFUFQ-UHFFFAOYSA-M 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000002243 precursor Substances 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 239000008096 xylene Substances 0.000 description 2
- YTPVNYPJOQKPQB-UHFFFAOYSA-N 1-(2-chlorophenyl)-3,4-dihydroisoquinoline Chemical compound ClC1=CC=CC=C1C1=NCCC2=CC=CC=C12 YTPVNYPJOQKPQB-UHFFFAOYSA-N 0.000 description 1
- SXAMGRAIZSSWIH-UHFFFAOYSA-N 2-[3-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]-1,2,4-oxadiazol-5-yl]-1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethanone Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C1=NOC(=N1)CC(=O)N1CC2=C(CC1)NN=N2 SXAMGRAIZSSWIH-UHFFFAOYSA-N 0.000 description 1
- GELMWIVBBPAMIO-UHFFFAOYSA-N 2-methylbutan-2-amine Chemical compound CCC(C)(C)N GELMWIVBBPAMIO-UHFFFAOYSA-N 0.000 description 1
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonium chloride Substances [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 1
- BSYNRYMUTXBXSQ-UHFFFAOYSA-N Aspirin Chemical class CC(=O)OC1=CC=CC=C1C(O)=O BSYNRYMUTXBXSQ-UHFFFAOYSA-N 0.000 description 1
- 241000283707 Capra Species 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 240000000491 Corchorus aestuans Species 0.000 description 1
- 235000011777 Corchorus aestuans Nutrition 0.000 description 1
- 235000010862 Corchorus capsularis Nutrition 0.000 description 1
- 101000608154 Homo sapiens Peroxiredoxin-like 2A Proteins 0.000 description 1
- 229930194542 Keto Natural products 0.000 description 1
- JOCBASBOOFNAJA-UHFFFAOYSA-N N-tris(hydroxymethyl)methyl-2-aminoethanesulfonic acid Chemical compound OCC(CO)(CO)NCCS(O)(=O)=O JOCBASBOOFNAJA-UHFFFAOYSA-N 0.000 description 1
- LDCGGKRTQISQAW-UHFFFAOYSA-N N1C(=O)C(C)N(C(C)=O)C(=O)C1=CC1=CC=CC=C1 Chemical compound N1C(=O)C(C)N(C(C)=O)C(=O)C1=CC1=CC=CC=C1 LDCGGKRTQISQAW-UHFFFAOYSA-N 0.000 description 1
- 102100039896 Peroxiredoxin-like 2A Human genes 0.000 description 1
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 description 1
- 241001648319 Toronia toru Species 0.000 description 1
- KXKVLQRXCPHEJC-UHFFFAOYSA-N acetic acid trimethyl ester Natural products COC(C)=O KXKVLQRXCPHEJC-UHFFFAOYSA-N 0.000 description 1
- 230000010933 acylation Effects 0.000 description 1
- 150000004703 alkoxides Chemical class 0.000 description 1
- 125000003545 alkoxy group Chemical group 0.000 description 1
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
- 229940024606 amino acid Drugs 0.000 description 1
- 125000003277 amino group Chemical group 0.000 description 1
- 150000003927 aminopyridines Chemical class 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- AYJRCSIUFZENHW-DEQYMQKBSA-L barium(2+);oxomethanediolate Chemical compound [Ba+2].[O-][14C]([O-])=O AYJRCSIUFZENHW-DEQYMQKBSA-L 0.000 description 1
- 125000003236 benzoyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C(*)=O 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 125000000837 carbohydrate group Chemical group 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 239000007810 chemical reaction solvent Substances 0.000 description 1
- FOCAUTSVDIKZOP-UHFFFAOYSA-N chloroacetic acid Chemical compound OC(=O)CCl FOCAUTSVDIKZOP-UHFFFAOYSA-N 0.000 description 1
- 229940106681 chloroacetic acid Drugs 0.000 description 1
- 238000004587 chromatography analysis Methods 0.000 description 1
- 238000003776 cleavage reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- CCAFPWNGIUBUSD-UHFFFAOYSA-N diethyl sulfoxide Chemical compound CCS(=O)CC CCAFPWNGIUBUSD-UHFFFAOYSA-N 0.000 description 1
- 230000001079 digestive effect Effects 0.000 description 1
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 235000003599 food sweetener Nutrition 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000001963 growth medium Substances 0.000 description 1
- FUKUFMFMCZIRNT-UHFFFAOYSA-N hydron;methanol;chloride Chemical compound Cl.OC FUKUFMFMCZIRNT-UHFFFAOYSA-N 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 229960004717 insulin aspart Drugs 0.000 description 1
- 239000011630 iodine Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 125000000468 ketone group Chemical group 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 1
- 235000019341 magnesium sulphate Nutrition 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- MYWUZJCMWCOHBA-VIFPVBQESA-N methamphetamine Chemical class CN[C@@H](C)CC1=CC=CC=C1 MYWUZJCMWCOHBA-VIFPVBQESA-N 0.000 description 1
- XOPUORAQCYGJPT-UHFFFAOYSA-N methanesulfonic acid;hydrochloride Chemical compound Cl.CS(O)(=O)=O XOPUORAQCYGJPT-UHFFFAOYSA-N 0.000 description 1
- VSDUZFOSJDMAFZ-VIFPVBQESA-N methyl L-phenylalaninate Chemical compound COC(=O)[C@@H](N)CC1=CC=CC=C1 VSDUZFOSJDMAFZ-VIFPVBQESA-N 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 150000002923 oximes Chemical class 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- BXRNXXXXHLBUKK-UHFFFAOYSA-N piperazine-2,5-dione Chemical compound O=C1CNC(=O)CN1 BXRNXXXXHLBUKK-UHFFFAOYSA-N 0.000 description 1
- IUGYQRQAERSCNH-UHFFFAOYSA-N pivalic acid Chemical compound CC(C)(C)C(O)=O IUGYQRQAERSCNH-UHFFFAOYSA-N 0.000 description 1
- LPNYRYFBWFDTMA-UHFFFAOYSA-N potassium tert-butoxide Chemical compound [K+].CC(C)(C)[O-] LPNYRYFBWFDTMA-UHFFFAOYSA-N 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 108090000765 processed proteins & peptides Proteins 0.000 description 1
- 229940002612 prodrug Drugs 0.000 description 1
- 239000000651 prodrug Substances 0.000 description 1
- SSOLNOMRVKKSON-UHFFFAOYSA-N proguanil Chemical compound CC(C)\N=C(/N)N=C(N)NC1=CC=C(Cl)C=C1 SSOLNOMRVKKSON-UHFFFAOYSA-N 0.000 description 1
- 125000006239 protecting group Chemical group 0.000 description 1
- IUVKMZGDUIUOCP-BTNSXGMBSA-N quinbolone Chemical compound O([C@H]1CC[C@H]2[C@H]3[C@@H]([C@]4(C=CC(=O)C=C4CC3)C)CC[C@@]21C)C1=CCCC1 IUVKMZGDUIUOCP-BTNSXGMBSA-N 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000007142 ring opening reaction Methods 0.000 description 1
- LMHHRCOWPQNFTF-UHFFFAOYSA-N s-propan-2-yl azepane-1-carbothioate Chemical compound CC(C)SC(=O)N1CCCCCC1 LMHHRCOWPQNFTF-UHFFFAOYSA-N 0.000 description 1
- 230000007017 scission Effects 0.000 description 1
- 239000004460 silage Substances 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- CBXWGGFGZDVPNV-UHFFFAOYSA-N so4-so4 Chemical compound OS(O)(=O)=O.OS(O)(=O)=O CBXWGGFGZDVPNV-UHFFFAOYSA-N 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000004317 sodium nitrate Substances 0.000 description 1
- 235000010344 sodium nitrate Nutrition 0.000 description 1
- CGRKYEALWSRNJS-UHFFFAOYSA-N sodium;2-methylbutan-2-olate Chemical compound [Na+].CCC(C)(C)[O-] CGRKYEALWSRNJS-UHFFFAOYSA-N 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000003765 sweetening agent Substances 0.000 description 1
- 230000009885 systemic effect Effects 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 125000000026 trimethylsilyl group Chemical group [H]C([H])([H])[Si]([*])(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 238000005292 vacuum distillation Methods 0.000 description 1
- 239000006200 vaporizer Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K5/00—Peptides containing up to four amino acids in a fully defined sequence; Derivatives thereof
- C07K5/04—Peptides containing up to four amino acids in a fully defined sequence; Derivatives thereof containing only normal peptide links
- C07K5/06—Dipeptides
- C07K5/06104—Dipeptides with the first amino acid being acidic
- C07K5/06113—Asp- or Asn-amino acid
- C07K5/06121—Asp- or Asn-amino acid the second amino acid being aromatic or cycloaliphatic
- C07K5/0613—Aspartame
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D241/00—Heterocyclic compounds containing 1,4-diazine or hydrogenated 1,4-diazine rings
- C07D241/02—Heterocyclic compounds containing 1,4-diazine or hydrogenated 1,4-diazine rings not condensed with other rings
- C07D241/06—Heterocyclic compounds containing 1,4-diazine or hydrogenated 1,4-diazine rings not condensed with other rings having one or two double bonds between ring members or between ring members and non-ring members
- C07D241/08—Heterocyclic compounds containing 1,4-diazine or hydrogenated 1,4-diazine rings not condensed with other rings having one or two double bonds between ring members or between ring members and non-ring members with oxygen atoms directly attached to ring carbon atoms
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Genetics & Genomics (AREA)
- Biochemistry (AREA)
- Biophysics (AREA)
- General Health & Medical Sciences (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Molecular Biology (AREA)
- Proteomics, Peptides & Aminoacids (AREA)
- Life Sciences & Earth Sciences (AREA)
- Peptides Or Proteins (AREA)
- Plural Heterocyclic Compounds (AREA)
- Hydrogenated Pyridines (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US49824390A | 1990-03-15 | 1990-03-15 | |
| US60665690A | 1990-10-31 | 1990-10-31 | |
| US65878491A | 1991-02-26 | 1991-02-26 | |
| US66480691A | 1991-03-08 | 1991-03-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CS70091A2 true CS70091A2 (en) | 1991-10-15 |
Family
ID=27504394
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CS91700A CS70091A2 (en) | 1990-03-15 | 1991-03-15 | Method of aspartame production |
Country Status (16)
| Country | Link |
|---|---|
| EP (1) | EP0478729B1 (pt) |
| CN (1) | CN1057835A (pt) |
| AT (1) | ATE141613T1 (pt) |
| AU (1) | AU628257B2 (pt) |
| CA (1) | CA2060515A1 (pt) |
| CS (1) | CS70091A2 (pt) |
| DE (1) | DE69121502T2 (pt) |
| DK (1) | DK0478729T3 (pt) |
| ES (1) | ES2091324T3 (pt) |
| GR (1) | GR3020839T3 (pt) |
| HU (1) | HUT60712A (pt) |
| IE (1) | IE910896A1 (pt) |
| NO (1) | NO920193D0 (pt) |
| NZ (1) | NZ237469A (pt) |
| PT (1) | PT97049B (pt) |
| WO (1) | WO1991014378A1 (pt) |
Families Citing this family (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04234375A (ja) * | 1990-12-27 | 1992-08-24 | Ajinomoto Co Inc | 新規２，５−ジオキソピペラジン化合物及びその製造法 |
| JPH04234374A (ja) * | 1990-12-27 | 1992-08-24 | Ajinomoto Co Inc | ジケトピペラジン誘導体の製造方法 |
| JPH05117246A (ja) * | 1991-10-23 | 1993-05-14 | Ajinomoto Co Inc | 新規２，５−ジオキソピペラジン化合物とその製造法及びα−Ｌ−アスパルチル−Ｌ−フエニルアラニンメチルエステル誘導体の製造法 |
| US6465677B1 (en) * | 1998-11-19 | 2002-10-15 | The Nutrasweet Company | Method for the preparation of N-neohexyl-α-aspartyl-L-phenylalanine methyl ester from imidazolidin-4-one intermediates |
| DE10019879A1 (de) * | 2000-04-20 | 2001-10-25 | Degussa | Verfahren zur Herstellung von 2,5-Diketopiperazinen, neue 2,5-Diketopiperazine und deren Verwendung |
| AU2001284697A1 (en) | 2000-08-04 | 2002-02-18 | Dmi Biosciences, Inc. | Method of synthesizing diketopiperazines |
| AU2001279313B2 (en) | 2000-08-04 | 2007-03-01 | Ampio Pharmaceuticals, Inc. | Method of using diketopiperazines and composition containing them |
| ATE520981T1 (de) | 2002-10-02 | 2011-09-15 | Dmi Biosciences Inc | Diagnose und überwachung von krankheiten |
| CA3050734A1 (en) | 2003-05-15 | 2004-12-02 | Ampio Pharmaceuticals, Inc. | Treatment of t-cell mediated diseases |
| WO2009146320A1 (en) | 2008-05-27 | 2009-12-03 | Dmi Life Sciences, Inc. | Therapeutic methods and compounds |
| US8507496B2 (en) | 2010-09-07 | 2013-08-13 | Dmi Acquisition Corp. | Treatment of diseases |
| EA027343B1 (ru) | 2011-10-10 | 2017-07-31 | Ампио Фармасьютикалз, Инк. | Имплантируемые устройства медицинского назначения с повышенной иммунной толерантностью и способы изготовления и имплантирования |
| EP2766029B1 (en) | 2011-10-10 | 2020-03-25 | Ampio Pharmaceuticals, Inc. | Treatment of degenerative joint disease |
| CA2846394A1 (en) | 2011-10-28 | 2013-05-02 | Ampio Pharmaceuticals, Inc. | Treatment of rhinitis |
| BR112015020469A2 (pt) | 2013-03-15 | 2020-01-28 | Ampio Pharmaceuticals Inc | Usos de da-dkp, composição e método para fornecimento de células-tronco a umindivíduo |
| AU2015305611B2 (en) | 2014-08-18 | 2020-04-23 | Ampio Pharmaceuticals, Inc. | Treatment of joint conditions |
| US11389512B2 (en) | 2015-06-22 | 2022-07-19 | Ampio Pharmaceuticals, Inc. | Use of low molecular weight fractions of human serum albumin in treating diseases |
| ES2957286T3 (es) * | 2016-12-21 | 2024-01-16 | Suntory Holdings Ltd | Alimentos y bebidas que contienen ciclo(aspartil-glicina), glucosa y maltosa |
| WO2024075813A1 (ja) * | 2022-10-07 | 2024-04-11 | 学校法人中部大学 | ジケトピペラジン化合物を用いるポリペプチド合成 |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2038106A1 (de) * | 1970-07-31 | 1972-02-10 | Henkel & Cie Gmbh | Aktivatoren fuer Perverbindungen |
| JPS58185545A (ja) * | 1982-04-22 | 1983-10-29 | Ajinomoto Co Inc | α−Ｌ−アスパルチル−Ｌ−フエニルアラニンメチルエステルまたはその塩酸塩の製法 |
| IT1197461B (it) * | 1983-05-13 | 1988-11-30 | Debi Derivati Biologici | Procedimento per la preparazione dell'estere metilico di alfa-l-aspartil-l-fenil-alanina |
| JPS60174799A (ja) * | 1984-02-21 | 1985-09-09 | Ajinomoto Co Inc | α−Ｌ−アスパルチル−Ｌ−フエニルアラニンメチルエステルの製造法 |
| AU586669B2 (en) * | 1985-03-29 | 1989-07-20 | Mitsui Toatsu Chemicals Inc. | Preparation process of ```-L-aspartyl-L-phenylalanine methyl ester or hydrochloride thereof |
| JPH0647600B2 (ja) * | 1985-06-04 | 1994-06-22 | 味の素株式会社 | β−アスパルチルフエニルアラニン誘導体のα−アスパルチルフエニルアラニン誘導体への変換法 |
| US4677220A (en) * | 1985-10-31 | 1987-06-30 | Monsanto Company | Process for the preparation of α-L-aspartyl-L-phenylalanine methyl ester |
| DE3600731A1 (de) * | 1986-01-13 | 1987-07-16 | Green Cross Korea | Verfahren zur herstellung von (alpha)-l-aspartyl-l-phenylalaninmethylester |
| US4992552A (en) * | 1988-08-31 | 1991-02-12 | Eastman Kodak Company | Process for preparation of amino acids |
-
1991
- 1991-03-12 WO PCT/US1991/001646 patent/WO1991014378A1/en not_active Ceased
- 1991-03-12 CA CA002060515A patent/CA2060515A1/en not_active Abandoned
- 1991-03-12 AT AT91906948T patent/ATE141613T1/de not_active IP Right Cessation
- 1991-03-12 EP EP91906948A patent/EP0478729B1/en not_active Expired - Lifetime
- 1991-03-12 DE DE69121502T patent/DE69121502T2/de not_active Expired - Fee Related
- 1991-03-12 AU AU75648/91A patent/AU628257B2/en not_active Ceased
- 1991-03-12 ES ES91906948T patent/ES2091324T3/es not_active Expired - Lifetime
- 1991-03-12 HU HU913921A patent/HUT60712A/hu unknown
- 1991-03-12 DK DK91906948.4T patent/DK0478729T3/da active
- 1991-03-15 PT PT97049A patent/PT97049B/pt not_active IP Right Cessation
- 1991-03-15 CN CN91102471.9A patent/CN1057835A/zh active Pending
- 1991-03-15 CS CS91700A patent/CS70091A2/cs unknown
- 1991-03-15 IE IE089691A patent/IE910896A1/en unknown
- 1991-03-18 NZ NZ237469A patent/NZ237469A/en unknown
-
1992
- 1992-01-15 NO NO920193A patent/NO920193D0/no unknown
-
1996
- 1996-08-22 GR GR960402052T patent/GR3020839T3/el unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CN1057835A (zh) | 1992-01-15 |
| DK0478729T3 (da) | 1996-09-16 |
| EP0478729B1 (en) | 1996-08-21 |
| PT97049B (pt) | 1998-07-31 |
| AU7564891A (en) | 1991-10-21 |
| ATE141613T1 (de) | 1996-09-15 |
| DE69121502D1 (de) | 1996-09-26 |
| EP0478729A4 (en) | 1993-06-16 |
| ES2091324T3 (es) | 1996-11-01 |
| NZ237469A (en) | 1993-08-26 |
| WO1991014378A1 (en) | 1991-10-03 |
| CA2060515A1 (en) | 1991-09-16 |
| AU628257B2 (en) | 1992-09-10 |
| HUT60712A (en) | 1992-10-28 |
| PT97049A (pt) | 1991-12-31 |
| NO920193L (no) | 1992-01-15 |
| IE910896A1 (en) | 1991-09-25 |
| GR3020839T3 (en) | 1996-11-30 |
| NO920193D0 (no) | 1992-01-15 |
| EP0478729A1 (en) | 1992-04-08 |
| DE69121502T2 (de) | 1997-01-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR910000234B1 (ko) | 시스, 엔도-2-아자비사이클로[5.3.0]데칸-3-카복실산 유도체의 제조방법 | |
| HU198445B (en) | Process for production of derivatives of 5-amin-4-hydroxi-valeric acid | |
| FR2606018A1 (fr) | Nouveaux a-aminoacides substitues, leur preparation et leur utilisation en therapeutique comme medicaments | |
| HU190486B (en) | Process for producing spiro /4./3+n// -2-azaalkane-3-carboxylic acid-derivatives and pharmaceutical compositions containing the same | |
| AU628257B2 (en) | Process for manufacturing aspartame from a diketopiperazine and novel intermediates and derivatives therefor | |
| JP2003171365A (ja) | モナティン類及びその製造中間体の製造方法並びに新規中間体 | |
| HRP20040935A2 (en) | Method for preparing combretastatins | |
| EP1603558B1 (en) | Process for preparation of perindopril and salts thereof | |
| HUT74935A (en) | Novel high enantio-selective process for producing pure enantiomeric cyclopentane and cyclopentene-beta-amino acids | |
| JP3247696B2 (ja) | 〔１ｓ−（１ｒ＊，２ｓ＊，３ｒ＊）〕−ｎ−（４−モルホリニルスルホニル）−ｌ−フェニルアラニル−３−（２−アミノ−４−チアゾリル）−ｎ−〔（１−シクロヘキシルメチル）−２，３−ジヒドロキシ−５−メチルヘキシル〕−ｌ−アラニンアミドの改良された製法 | |
| US5420283A (en) | Resolution of (R)-2-benzylsuccinic acid 4-[4-(N-t-butoxycarbonylmethylamino)-piperidine] amide | |
| KR100563894B1 (ko) | 가바펜틴 동족체의 신규 입체선택적 제조 방법 | |
| IE47073B1 (en) | Alpha amino-acids, compositions and process for preparing said compounds | |
| US6759555B2 (en) | Process for the preparation of combretastatins | |
| JPH02256655A (ja) | 光学活性なスレオージヒドロキシフェニルセリン誘導体の製造方法 | |
| JPH06184069A (ja) | α−ヒドロキシ−β−アミノカルボン酸の製造方法 | |
| Shin et al. | Dehydrooligopeptides. VIII. Convenient syntheses of various dehydrotyrosine derivatives protected with useful N, O-protecting groups via N-carboxy dehydrotyrosine anhydrides. | |
| JP2730135B2 (ja) | 酸アミド誘導体 | |
| NO172940B (no) | Analogifremgangsmaate for fremstilling av terapeutisk aktive bisykliske aminosyrer | |
| WO2007085933A2 (en) | Process for the preparation of n-[1-(s)-ethoxycarbonyl-1-butyl]-(s)-alanine-dmt complex and its use in the preparation of perindopril | |
| EP1724260B1 (en) | Process for the synthesis of (2S, 3aR, 7aS)octahydroindole-2-carboxylic acid and its conversion to trandolapril | |
| CA1275348C (en) | Method and intermediates for producing -l-aspartyl- l-phenylalanine | |
| JPH06340623A (ja) | ベンジルコハク酸誘導体の製造方法およびその製造中間体 | |
| EP0239063A2 (en) | Process for preparing N-omega-trifluoroacetyl amino acid | |
| GB2390539A (en) | Tri-substituted benzene & pyridine derivatives with 2 or 3 carboxy-comprising substituents for use as antibiotic or antibacterial agents |