CA1071621A - Process for preparing 7-aminocephalosporanic acid derivatives - Google Patents
Process for preparing 7-aminocephalosporanic acid derivativesInfo
- Publication number
- CA1071621A CA1071621A CA244,626A CA244626A CA1071621A CA 1071621 A CA1071621 A CA 1071621A CA 244626 A CA244626 A CA 244626A CA 1071621 A CA1071621 A CA 1071621A
- Authority
- CA
- Canada
- Prior art keywords
- group
- ester
- phthalidyl
- formula
- methyl
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- HSHGZXNAXBPPDL-HZGVNTEJSA-N 7beta-aminocephalosporanic acid Chemical class S1CC(COC(=O)C)=C(C([O-])=O)N2C(=O)[C@@H]([NH3+])[C@@H]12 HSHGZXNAXBPPDL-HZGVNTEJSA-N 0.000 title description 4
- 238000004519 manufacturing process Methods 0.000 title 1
- 150000002148 esters Chemical class 0.000 claims abstract description 14
- 238000002360 preparation method Methods 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims description 33
- 125000005633 phthalidyl group Chemical group 0.000 claims description 26
- 230000008569 process Effects 0.000 claims description 26
- -1 carbamoyloxy Chemical group 0.000 claims description 22
- 150000001875 compounds Chemical class 0.000 claims description 20
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 12
- 125000003277 amino group Chemical group 0.000 claims description 12
- 229910052708 sodium Inorganic materials 0.000 claims description 12
- 239000011734 sodium Substances 0.000 claims description 12
- 229910052739 hydrogen Inorganic materials 0.000 claims description 11
- 239000001257 hydrogen Substances 0.000 claims description 11
- 125000000217 alkyl group Chemical group 0.000 claims description 10
- BXRVAIYLQLSKIJ-UHFFFAOYSA-N 3-iodo-3h-2-benzofuran-1-one Chemical compound C1=CC=C2C(I)OC(=O)C2=C1 BXRVAIYLQLSKIJ-UHFFFAOYSA-N 0.000 claims description 8
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 8
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- 229910052760 oxygen Inorganic materials 0.000 claims description 6
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 5
- 239000005864 Sulphur Substances 0.000 claims description 5
- 125000003118 aryl group Chemical group 0.000 claims description 5
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 5
- 239000002904 solvent Substances 0.000 claims description 5
- 125000003668 acetyloxy group Chemical group [H]C([H])([H])C(=O)O[*] 0.000 claims description 4
- 125000004442 acylamino group Chemical group 0.000 claims description 4
- 125000003342 alkenyl group Chemical group 0.000 claims description 4
- 125000003545 alkoxy group Chemical group 0.000 claims description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 4
- 229910052736 halogen Inorganic materials 0.000 claims description 4
- 150000002367 halogens Chemical class 0.000 claims description 4
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- 239000001301 oxygen Substances 0.000 claims description 4
- 239000002253 acid Substances 0.000 claims description 3
- 125000003710 aryl alkyl group Chemical group 0.000 claims description 3
- 125000000623 heterocyclic group Chemical group 0.000 claims description 3
- 125000001399 1,2,3-triazolyl group Chemical group N1N=NC(=C1)* 0.000 claims description 2
- 125000004514 1,2,4-thiadiazolyl group Chemical group 0.000 claims description 2
- 125000001781 1,3,4-oxadiazolyl group Chemical group 0.000 claims description 2
- 125000004520 1,3,4-thiadiazolyl group Chemical group 0.000 claims description 2
- OROGUZVNAFJPHA-UHFFFAOYSA-N 3-hydroxy-2,4-dimethyl-2H-thiophen-5-one Chemical compound CC1SC(=O)C(C)=C1O OROGUZVNAFJPHA-UHFFFAOYSA-N 0.000 claims description 2
- 125000004183 alkoxy alkyl group Chemical group 0.000 claims description 2
- 125000004429 atom Chemical group 0.000 claims description 2
- 125000002768 hydroxyalkyl group Chemical group 0.000 claims description 2
- 150000002596 lactones Chemical class 0.000 claims description 2
- 125000002950 monocyclic group Chemical group 0.000 claims description 2
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 claims description 2
- 125000002971 oxazolyl group Chemical group 0.000 claims description 2
- 125000001424 substituent group Chemical group 0.000 claims description 2
- 229910052717 sulfur Inorganic materials 0.000 claims description 2
- 125000000335 thiazolyl group Chemical group 0.000 claims description 2
- 125000002023 trifluoromethyl group Chemical group FC(F)(F)* 0.000 claims description 2
- 125000001376 1,2,4-triazolyl group Chemical group N1N=C(N=C1)* 0.000 claims 1
- 125000002030 1,2-phenylene group Chemical group [H]C1=C([H])C([*:1])=C([*:2])C([H])=C1[H] 0.000 claims 1
- QXNVGIXVLWOKEQ-UHFFFAOYSA-N Disodium Chemical class [Na][Na] QXNVGIXVLWOKEQ-UHFFFAOYSA-N 0.000 claims 1
- 125000000304 alkynyl group Chemical group 0.000 claims 1
- 125000004181 carboxyalkyl group Chemical group 0.000 claims 1
- 125000004122 cyclic group Chemical group 0.000 claims 1
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 claims 1
- 125000006239 protecting group Chemical group 0.000 claims 1
- 238000005886 esterification reaction Methods 0.000 abstract description 9
- 230000005012 migration Effects 0.000 abstract description 5
- 238000013508 migration Methods 0.000 abstract description 5
- 229930186147 Cephalosporin Natural products 0.000 abstract description 4
- 229940124587 cephalosporin Drugs 0.000 abstract description 4
- 150000001780 cephalosporins Chemical class 0.000 abstract description 3
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N dimethyl sulfoxide Natural products CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 19
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 12
- 239000000243 solution Substances 0.000 description 9
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 8
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 8
- 101150041968 CDC13 gene Proteins 0.000 description 7
- HEDRZPFGACZZDS-MICDWDOJSA-N Trichloro(2H)methane Chemical compound [2H]C(Cl)(Cl)Cl HEDRZPFGACZZDS-MICDWDOJSA-N 0.000 description 7
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 6
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 6
- 230000032050 esterification Effects 0.000 description 6
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 4
- 239000005457 ice water Substances 0.000 description 4
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- 238000005917 acylation reaction Methods 0.000 description 3
- 150000001408 amides Chemical class 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 150000007942 carboxylates Chemical class 0.000 description 3
- FUBBGQLTSCSAON-PBFPGSCMSA-N cefaloglycin Chemical compound C1([C@@H](N)C(=O)N[C@H]2[C@@H]3N(C2=O)C(=C(CS3)COC(=O)C)C(O)=O)=CC=CC=C1 FUBBGQLTSCSAON-PBFPGSCMSA-N 0.000 description 3
- 229950004030 cefaloglycin Drugs 0.000 description 3
- 150000002500 ions Chemical class 0.000 description 3
- 239000012038 nucleophile Substances 0.000 description 3
- FVAUCKIRQBBSSJ-UHFFFAOYSA-M sodium iodide Chemical compound [Na+].[I-] FVAUCKIRQBBSSJ-UHFFFAOYSA-M 0.000 description 3
- 159000000000 sodium salts Chemical class 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 2
- 238000005903 acid hydrolysis reaction Methods 0.000 description 2
- 230000010933 acylation Effects 0.000 description 2
- 125000004423 acyloxy group Chemical group 0.000 description 2
- 125000000852 azido group Chemical group *N=[N+]=[N-] 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000009903 catalytic hydrogenation reaction Methods 0.000 description 2
- 229960000603 cefalotin Drugs 0.000 description 2
- YGBFLZPYDUKSPT-MRVPVSSYSA-N cephalosporanic acid Chemical compound S1CC(COC(=O)C)=C(C(O)=O)N2C(=O)C[C@H]21 YGBFLZPYDUKSPT-MRVPVSSYSA-N 0.000 description 2
- VUFGUVLLDPOSBC-XRZFDKQNSA-M cephalothin sodium Chemical compound [Na+].N([C@H]1[C@@H]2N(C1=O)C(=C(CS2)COC(=O)C)C([O-])=O)C(=O)CC1=CC=CS1 VUFGUVLLDPOSBC-XRZFDKQNSA-M 0.000 description 2
- 125000000753 cycloalkyl group Chemical group 0.000 description 2
- 125000000596 cyclohexenyl group Chemical group C1(=CCCCC1)* 0.000 description 2
- 229960001760 dimethyl sulfoxide Drugs 0.000 description 2
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 description 2
- 125000001160 methoxycarbonyl group Chemical group [H]C([H])([H])OC(*)=O 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 125000004076 pyridyl group Chemical group 0.000 description 2
- 125000003831 tetrazolyl group Chemical group 0.000 description 2
- 125000001544 thienyl group Chemical group 0.000 description 2
- HFQTWHIUBSEYBQ-SBXXRYSUSA-N (6r)-3-(carbamoyloxymethyl)-7-[(4-nitrophenyl)methoxycarbonylamino]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid Chemical compound C1([C@@H]2N(C1=O)C(=C(CS2)COC(=O)N)C(O)=O)NC(=O)OCC1=CC=C([N+]([O-])=O)C=C1 HFQTWHIUBSEYBQ-SBXXRYSUSA-N 0.000 description 1
- SXBDXXFTJVHSAF-ZCFIWIBFSA-N (6r)-5-thia-1-azabicyclo[4.2.0]oct-3-en-8-one Chemical compound S1C=CCN2C(=O)C[C@H]21 SXBDXXFTJVHSAF-ZCFIWIBFSA-N 0.000 description 1
- KIYRSYYOVDHSPG-UHFFFAOYSA-N 2-amino-2-phenylacetamide Chemical compound NC(=O)C(N)C1=CC=CC=C1 KIYRSYYOVDHSPG-UHFFFAOYSA-N 0.000 description 1
- CLMSHAWYULIVFQ-UHFFFAOYSA-N 3-bromo-3h-2-benzofuran-1-one Chemical compound C1=CC=C2C(Br)OC(=O)C2=C1 CLMSHAWYULIVFQ-UHFFFAOYSA-N 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- 101100087530 Caenorhabditis elegans rom-1 gene Proteins 0.000 description 1
- DBTDEFJAFBUGPP-UHFFFAOYSA-N Methanethial Chemical compound S=C DBTDEFJAFBUGPP-UHFFFAOYSA-N 0.000 description 1
- WRQNANDWMGAFTP-UHFFFAOYSA-N Methylacetoacetic acid Chemical compound COC(=O)CC(C)=O WRQNANDWMGAFTP-UHFFFAOYSA-N 0.000 description 1
- 101100305983 Mus musculus Rom1 gene Proteins 0.000 description 1
- 101800000021 N-terminal protease Proteins 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical group C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 1
- PQUGCKBLVKJMNT-UHFFFAOYSA-N SC560 Chemical compound C1=CC(OC)=CC=C1N1C(C=2C=CC(Cl)=CC=2)=CC(C(F)(F)F)=N1 PQUGCKBLVKJMNT-UHFFFAOYSA-N 0.000 description 1
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 1
- DTQVDTLACAAQTR-UHFFFAOYSA-M Trifluoroacetate Chemical compound [O-]C(=O)C(F)(F)F DTQVDTLACAAQTR-UHFFFAOYSA-M 0.000 description 1
- DTQVDTLACAAQTR-UHFFFAOYSA-N Trifluoroacetic acid Chemical compound OC(=O)C(F)(F)F DTQVDTLACAAQTR-UHFFFAOYSA-N 0.000 description 1
- 238000005904 alkaline hydrolysis reaction Methods 0.000 description 1
- ZGUNAGUHMKGQNY-UHFFFAOYSA-N alpha-phenylglycine Chemical compound OC(=O)C(N)C1=CC=CC=C1 ZGUNAGUHMKGQNY-UHFFFAOYSA-N 0.000 description 1
- 125000003368 amide group Chemical group 0.000 description 1
- 125000002490 anilino group Chemical class [H]N(*)C1=C([H])C([H])=C([H])C([H])=C1[H] 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 description 1
- ZYFYTWZIMOACBS-UHFFFAOYSA-N butan-1-ol;ethanol;hydrate Chemical compound O.CCO.CCCCO ZYFYTWZIMOACBS-UHFFFAOYSA-N 0.000 description 1
- 125000002837 carbocyclic group Chemical group 0.000 description 1
- 150000001718 carbodiimides Chemical class 0.000 description 1
- 125000003262 carboxylic acid ester group Chemical group [H]C([H])([*:2])OC(=O)C([H])([H])[*:1] 0.000 description 1
- 239000012043 crude product Substances 0.000 description 1
- 125000000392 cycloalkenyl group Chemical group 0.000 description 1
- 125000003678 cyclohexadienyl group Chemical group C1(=CC=CCC1)* 0.000 description 1
- 238000010511 deprotection reaction Methods 0.000 description 1
- 125000000664 diazo group Chemical group [N-]=[N+]=[*] 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000012990 dithiocarbamate Substances 0.000 description 1
- 150000004659 dithiocarbamates Chemical class 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 125000001240 enamine group Chemical group 0.000 description 1
- 125000004185 ester group Chemical group 0.000 description 1
- 125000001301 ethoxy group Chemical group [H]C([H])([H])C([H])([H])O* 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 125000002795 guanidino group Chemical group C(N)(=N)N* 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- XMBWDFGMSWQBCA-UHFFFAOYSA-N hydrogen iodide Chemical compound I XMBWDFGMSWQBCA-UHFFFAOYSA-N 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000006317 isomerization reaction Methods 0.000 description 1
- 125000000842 isoxazolyl group Chemical group 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 125000000286 phenylethyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])C([H])([H])* 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 150000003222 pyridines Chemical class 0.000 description 1
- 239000012048 reactive intermediate Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 235000009518 sodium iodide Nutrition 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 125000005346 substituted cycloalkyl group Chemical group 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 150000003536 tetrazoles Chemical class 0.000 description 1
- 125000001425 triazolyl group Chemical group 0.000 description 1
- ZMANZCXQSJIPKH-UHFFFAOYSA-O triethylammonium ion Chemical compound CC[NH+](CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-O 0.000 description 1
- 238000001665 trituration Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000010626 work up procedure Methods 0.000 description 1
- 239000012991 xanthate Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D501/00—Heterocyclic compounds containing 5-thia-1-azabicyclo [4.2.0] octane ring systems, i.e. compounds containing a ring system of the formula:, e.g. cephalosporins; Such ring systems being further condensed, e.g. 2,3-condensed with an oxygen-, nitrogen- or sulfur-containing hetero ring
- C07D501/14—Compounds having a nitrogen atom directly attached in position 7
- C07D501/16—Compounds having a nitrogen atom directly attached in position 7 with a double bond between positions 2 and 3
- C07D501/20—7-Acylaminocephalosporanic or substituted 7-acylaminocephalosporanic acids in which the acyl radicals are derived from carboxylic acids
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D501/00—Heterocyclic compounds containing 5-thia-1-azabicyclo [4.2.0] octane ring systems, i.e. compounds containing a ring system of the formula:, e.g. cephalosporins; Such ring systems being further condensed, e.g. 2,3-condensed with an oxygen-, nitrogen- or sulfur-containing hetero ring
- C07D501/02—Preparation
- C07D501/04—Preparation from compounds already containing the ring or condensed ring systems, e.g. by dehydrogenation of the ring, by introduction, elimination or modification of substituents
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D501/00—Heterocyclic compounds containing 5-thia-1-azabicyclo [4.2.0] octane ring systems, i.e. compounds containing a ring system of the formula:, e.g. cephalosporins; Such ring systems being further condensed, e.g. 2,3-condensed with an oxygen-, nitrogen- or sulfur-containing hetero ring
- C07D501/14—Compounds having a nitrogen atom directly attached in position 7
- C07D501/16—Compounds having a nitrogen atom directly attached in position 7 with a double bond between positions 2 and 3
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Cephalosporin Compounds (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB7546/75A GB1544404A (en) | 1975-02-22 | 1975-02-22 | Process for preparing esters of 7-amino-cephalosporanic acid derivatives |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1071621A true CA1071621A (en) | 1980-02-12 |
Family
ID=9835213
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA244,626A Expired CA1071621A (en) | 1975-02-22 | 1976-01-30 | Process for preparing 7-aminocephalosporanic acid derivatives |
Country Status (18)
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3139534A (en) * | 1960-06-17 | 1964-06-30 | Honeywell Regulator Co | Pulse characterizing apparatus using saturable core means to effect pulse delay and shaping |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1377661A (en) * | 1971-06-05 | 1974-12-18 | Yamanouchi Pharma Co Ltd | Oxofuryl ester derivatives of penicillin and cephalosporin |
| GB1406113A (en) * | 1972-10-05 | 1975-09-17 | Leo Pharm Prod Ltd | Process for the preparation of cephalosporin estets |
-
1975
- 1975-02-22 GB GB7546/75A patent/GB1544404A/en not_active Expired
-
1976
- 1976-01-19 IE IE100/76A patent/IE42404B1/en unknown
- 1976-01-26 ZA ZA441A patent/ZA76441B/xx unknown
- 1976-01-30 CA CA244,626A patent/CA1071621A/en not_active Expired
- 1976-02-04 AR AR262151A patent/AR212809A1/es active
- 1976-02-06 FI FI760292A patent/FI760292A7/fi not_active Application Discontinuation
- 1976-02-07 JP JP51012737A patent/JPS51101995A/ja active Pending
- 1976-02-09 ES ES445009A patent/ES445009A1/es not_active Expired
- 1976-02-10 DE DE19762605159 patent/DE2605159A1/de not_active Withdrawn
- 1976-02-11 SE SE7601534A patent/SE7601534L/ not_active Application Discontinuation
- 1976-02-11 FR FR7603744A patent/FR2301527A1/fr active Granted
- 1976-02-12 BE BE164288A patent/BE838514A/xx unknown
- 1976-02-19 AT AT118476A patent/AT345456B/de not_active IP Right Cessation
- 1976-02-19 NL NL7601662A patent/NL7601662A/xx not_active Application Discontinuation
- 1976-02-20 NO NO760577A patent/NO760577L/no unknown
- 1976-02-20 DK DK72976*#A patent/DK72976A/da not_active Application Discontinuation
- 1976-02-20 CH CH211176A patent/CH619957A5/de not_active IP Right Cessation
- 1976-02-23 AU AU11339/76A patent/AU505037B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| AU505037B2 (en) | 1979-11-08 |
| JPS51101995A (enrdf_load_stackoverflow) | 1976-09-08 |
| SE7601534L (sv) | 1976-08-23 |
| DK72976A (da) | 1976-08-23 |
| ES445009A1 (es) | 1977-08-16 |
| FR2301527A1 (fr) | 1976-09-17 |
| CH619957A5 (en) | 1980-10-31 |
| ATA118476A (de) | 1978-01-15 |
| DE2605159A1 (de) | 1976-09-02 |
| AT345456B (de) | 1978-09-25 |
| IE42404B1 (en) | 1980-07-30 |
| IE42404L (en) | 1976-08-22 |
| BE838514A (fr) | 1976-08-12 |
| GB1544404A (en) | 1979-04-19 |
| FR2301527B1 (enrdf_load_stackoverflow) | 1980-03-07 |
| NL7601662A (nl) | 1976-08-24 |
| ZA76441B (en) | 1977-01-26 |
| FI760292A7 (enrdf_load_stackoverflow) | 1976-08-23 |
| AU1133976A (en) | 1977-09-01 |
| NO760577L (enrdf_load_stackoverflow) | 1976-08-24 |
| AR212809A1 (es) | 1978-10-13 |
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