CH498152A - 7-aminocephalosporanic acid derivs antibacterial - Google Patents
7-aminocephalosporanic acid derivs antibacterialInfo
- Publication number
- CH498152A CH498152A CH1228370A CH1228370A CH498152A CH 498152 A CH498152 A CH 498152A CH 1228370 A CH1228370 A CH 1228370A CH 1228370 A CH1228370 A CH 1228370A CH 498152 A CH498152 A CH 498152A
- Authority
- CH
- Switzerland
- Prior art keywords
- formula
- substituted
- compounds
- radical
- lower alkyl
- Prior art date
Links
- HSHGZXNAXBPPDL-HZGVNTEJSA-N 7beta-aminocephalosporanic acid Chemical compound S1CC(COC(=O)C)=C(C([O-])=O)N2C(=O)[C@@H]([NH3+])[C@@H]12 HSHGZXNAXBPPDL-HZGVNTEJSA-N 0.000 title claims abstract description 9
- 230000000844 anti-bacterial effect Effects 0.000 title abstract description 3
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims abstract description 19
- 150000003839 salts Chemical class 0.000 claims abstract description 12
- -1 carbamoyloxy Chemical group 0.000 claims abstract description 11
- 125000000738 acetamido group Chemical group [H]C([H])([H])C(=O)N([H])[*] 0.000 claims abstract description 4
- 125000003277 amino group Chemical group 0.000 claims abstract description 4
- 125000002883 imidazolyl group Chemical group 0.000 claims abstract description 4
- 125000004433 nitrogen atom Chemical group N* 0.000 claims abstract description 4
- 150000001875 compounds Chemical class 0.000 claims description 29
- 238000000034 method Methods 0.000 claims description 22
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 claims description 21
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 15
- 125000000217 alkyl group Chemical group 0.000 claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 claims description 12
- RAXXELZNTBOGNW-UHFFFAOYSA-N imidazole Natural products C1=CNC=N1 RAXXELZNTBOGNW-UHFFFAOYSA-N 0.000 claims description 12
- 125000003545 alkoxy group Chemical group 0.000 claims description 11
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 10
- 239000002253 acid Substances 0.000 claims description 8
- 125000002962 imidazol-1-yl group Chemical group [*]N1C([H])=NC([H])=C1[H] 0.000 claims description 8
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 claims description 8
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- 238000002360 preparation method Methods 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 5
- 239000001257 hydrogen Substances 0.000 claims description 5
- 229910052739 hydrogen Inorganic materials 0.000 claims description 5
- 229910052757 nitrogen Inorganic materials 0.000 claims description 5
- 239000000047 product Substances 0.000 claims description 5
- 239000000741 silica gel Substances 0.000 claims description 5
- 229910002027 silica gel Inorganic materials 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- 150000003566 thiocarboxylic acids Chemical class 0.000 claims description 5
- 238000002211 ultraviolet spectrum Methods 0.000 claims description 5
- 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 4
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 4
- 235000019253 formic acid Nutrition 0.000 claims description 4
- 150000002460 imidazoles Chemical class 0.000 claims description 4
- WREDNSAXDZCLCP-UHFFFAOYSA-N methanedithioic acid Chemical compound SC=S WREDNSAXDZCLCP-UHFFFAOYSA-N 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 4
- 239000002244 precipitate Substances 0.000 claims description 4
- 238000001228 spectrum Methods 0.000 claims description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 3
- 239000000706 filtrate Substances 0.000 claims description 3
- 239000000725 suspension Substances 0.000 claims description 3
- APQHKWPGGHMYKJ-UHFFFAOYSA-N Tributyltin oxide Chemical compound CCCC[Sn](CCCC)(CCCC)O[Sn](CCCC)(CCCC)CCCC APQHKWPGGHMYKJ-UHFFFAOYSA-N 0.000 claims description 2
- 125000001309 chloro group Chemical group Cl* 0.000 claims description 2
- 230000001419 dependent effect Effects 0.000 claims description 2
- 230000035484 reaction time Effects 0.000 claims description 2
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims description 2
- 235000017557 sodium bicarbonate Nutrition 0.000 claims description 2
- LMBFAGIMSUYTBN-MPZNNTNKSA-N teixobactin Chemical compound C([C@H](C(=O)N[C@@H]([C@@H](C)CC)C(=O)N[C@@H](CO)C(=O)N[C@H](CCC(N)=O)C(=O)N[C@H]([C@@H](C)CC)C(=O)N[C@@H]([C@@H](C)CC)C(=O)N[C@@H](CO)C(=O)N[C@H]1C(N[C@@H](C)C(=O)N[C@@H](C[C@@H]2NC(=N)NC2)C(=O)N[C@H](C(=O)O[C@H]1C)[C@@H](C)CC)=O)NC)C1=CC=CC=C1 LMBFAGIMSUYTBN-MPZNNTNKSA-N 0.000 claims description 2
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 claims 2
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 claims 1
- 150000003512 tertiary amines Chemical class 0.000 claims 1
- 241000894006 Bacteria Species 0.000 abstract description 2
- 241000588724 Escherichia coli Species 0.000 abstract description 2
- 229930182555 Penicillin Natural products 0.000 abstract description 2
- JGSARLDLIJGVTE-MBNYWOFBSA-N Penicillin G Chemical compound N([C@H]1[C@H]2SC([C@@H](N2C1=O)C(O)=O)(C)C)C(=O)CC1=CC=CC=C1 JGSARLDLIJGVTE-MBNYWOFBSA-N 0.000 abstract description 2
- 208000015181 infectious disease Diseases 0.000 abstract description 2
- 244000005700 microbiome Species 0.000 abstract description 2
- 229940049954 penicillin Drugs 0.000 abstract description 2
- 241001622982 Bombus soroeensis proteus Species 0.000 abstract 1
- 239000000654 additive Substances 0.000 abstract 1
- 239000000645 desinfectant Substances 0.000 abstract 1
- 150000004693 imidazolium salts Chemical class 0.000 abstract 1
- 239000003755 preservative agent Substances 0.000 abstract 1
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 6
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 6
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 5
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 4
- 125000005843 halogen group Chemical group 0.000 description 4
- 229960000583 acetic acid Drugs 0.000 description 3
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 3
- 239000007858 starting material Substances 0.000 description 3
- HTSGKJQDMSTCGS-UHFFFAOYSA-N 1,4-bis(4-chlorophenyl)-2-(4-methylphenyl)sulfonylbutane-1,4-dione Chemical compound C1=CC(C)=CC=C1S(=O)(=O)C(C(=O)C=1C=CC(Cl)=CC=1)CC(=O)C1=CC=C(Cl)C=C1 HTSGKJQDMSTCGS-UHFFFAOYSA-N 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- PQLVXDKIJBQVDF-UHFFFAOYSA-N acetic acid;hydrate Chemical compound O.CC(O)=O PQLVXDKIJBQVDF-UHFFFAOYSA-N 0.000 description 2
- 230000010933 acylation Effects 0.000 description 2
- 238000005917 acylation reaction Methods 0.000 description 2
- NDKBVBUGCNGSJJ-UHFFFAOYSA-M benzyltrimethylammonium hydroxide Chemical compound [OH-].C[N+](C)(C)CC1=CC=CC=C1 NDKBVBUGCNGSJJ-UHFFFAOYSA-M 0.000 description 2
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 2
- 239000012362 glacial acetic acid Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 150000007530 organic bases Chemical class 0.000 description 2
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 2
- ADFXKUOMJKEIND-UHFFFAOYSA-N 1,3-dicyclohexylurea Chemical compound C1CCCCC1NC(=O)NC1CCCCC1 ADFXKUOMJKEIND-UHFFFAOYSA-N 0.000 description 1
- NGNBDVOYPDDBFK-UHFFFAOYSA-N 2-[2,4-di(pentan-2-yl)phenoxy]acetyl chloride Chemical compound CCCC(C)C1=CC=C(OCC(Cl)=O)C(C(C)CCC)=C1 NGNBDVOYPDDBFK-UHFFFAOYSA-N 0.000 description 1
- GRWKNBPOGBTZMN-UHFFFAOYSA-N 2-benzyl-3-phenylpropane-1,2-diamine Chemical compound C=1C=CC=CC=1CC(N)(CN)CC1=CC=CC=C1 GRWKNBPOGBTZMN-UHFFFAOYSA-N 0.000 description 1
- HOKIDJSKDBPKTQ-UHFFFAOYSA-N 3-(acetyloxymethyl)-7-[(5-amino-5-carboxypentanoyl)amino]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid Chemical class S1CC(COC(=O)C)=C(C(O)=O)N2C(=O)C(NC(=O)CCCC(N)C(O)=O)C12 HOKIDJSKDBPKTQ-UHFFFAOYSA-N 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- QOSSAOTZNIDXMA-UHFFFAOYSA-N Dicylcohexylcarbodiimide Chemical compound C1CCCCC1N=C=NC1CCCCC1 QOSSAOTZNIDXMA-UHFFFAOYSA-N 0.000 description 1
- 108090000371 Esterases Proteins 0.000 description 1
- 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 description 1
- WRYCSMQKUKOKBP-UHFFFAOYSA-N Imidazolidine Chemical compound C1CNCN1 WRYCSMQKUKOKBP-UHFFFAOYSA-N 0.000 description 1
- OWIKHYCFFJSOEH-UHFFFAOYSA-N Isocyanic acid Chemical class N=C=O OWIKHYCFFJSOEH-UHFFFAOYSA-N 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 241000699670 Mus sp. Species 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 241000588769 Proteus <enterobacteria> Species 0.000 description 1
- 241000607142 Salmonella Species 0.000 description 1
- 229920005654 Sephadex Polymers 0.000 description 1
- 239000012507 Sephadex™ Substances 0.000 description 1
- 150000008065 acid anhydrides Chemical class 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 150000001342 alkaline earth metals Chemical class 0.000 description 1
- 125000004453 alkoxycarbonyl group Chemical group 0.000 description 1
- 125000004414 alkyl thio group Chemical group 0.000 description 1
- 150000001413 amino acids Chemical class 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 150000008064 anhydrides Chemical class 0.000 description 1
- 239000003674 animal food additive Substances 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 150000001540 azides Chemical class 0.000 description 1
- MNUWIHLYLCEUDD-UHFFFAOYSA-N benzene;n,n-dimethylmethanamine;hydrate Chemical compound [OH-].C[NH+](C)C.C1=CC=CC=C1 MNUWIHLYLCEUDD-UHFFFAOYSA-N 0.000 description 1
- 125000002619 bicyclic group Chemical group 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 125000003917 carbamoyl group Chemical group [H]N([H])C(*)=O 0.000 description 1
- 150000001718 carbodiimides Chemical class 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 239000012876 carrier material Substances 0.000 description 1
- 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 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 239000012043 crude product Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- MTNDZQHUAFNZQY-UHFFFAOYSA-N imidazoline Chemical compound C1CN=CN1 MTNDZQHUAFNZQY-UHFFFAOYSA-N 0.000 description 1
- 239000000543 intermediate Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 125000002950 monocyclic group Chemical group 0.000 description 1
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 125000001181 organosilyl group Chemical group [SiH3]* 0.000 description 1
- 238000007911 parenteral administration Methods 0.000 description 1
- 239000000825 pharmaceutical preparation Substances 0.000 description 1
- IUGYQRQAERSCNH-UHFFFAOYSA-N pivalic acid Chemical compound CC(C)(C)C(O)=O IUGYQRQAERSCNH-UHFFFAOYSA-N 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- MFDFERRIHVXMIY-UHFFFAOYSA-N procaine Chemical compound CCN(CC)CCOC(=O)C1=CC=C(N)C=C1 MFDFERRIHVXMIY-UHFFFAOYSA-N 0.000 description 1
- 229960004919 procaine Drugs 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 238000006884 silylation reaction Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 125000003638 stannyl group Chemical group [H][Sn]([H])([H])* 0.000 description 1
- 238000005797 stannylation reaction Methods 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 125000001424 substituent group Chemical group 0.000 description 1
- 238000004809 thin layer chromatography Methods 0.000 description 1
- 150000003565 thiocarboxylic acid derivatives Chemical class 0.000 description 1
- 238000011200 topical administration Methods 0.000 description 1
- 230000000699 topical effect Effects 0.000 description 1
- YNJBWRMUSHSURL-UHFFFAOYSA-N trichloroacetic acid Chemical compound OC(=O)C(Cl)(Cl)Cl YNJBWRMUSHSURL-UHFFFAOYSA-N 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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/33—Heterocyclic compounds
- A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
- A61K31/54—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with at least one nitrogen and one sulfur as the ring hetero atoms, e.g. sulthiame
- A61K31/542—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with at least one nitrogen and one sulfur as the ring hetero atoms, e.g. sulthiame ortho- or peri-condensed with heterocyclic ring systems
- A61K31/545—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, cefaclor, or cephalexine
-
- 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
- C07D501/24—7-Acylaminocephalosporanic or substituted 7-acylaminocephalosporanic acids in which the acyl radicals are derived from carboxylic acids with hydrocarbon radicals, substituted by hetero atoms or hetero rings, attached in position 3
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Pharmacology & Pharmacy (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Cephalosporin Compounds (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Abstract
(A) 7-Aminocephalosporanic acid derivs. (I) R1 = opt. hydrogenated imidazolium or imidazolyl, bound with an N-atom to the acetylamino R2 = a free- or carboxylic acid-esterified hydroxy group in which the ester-O-atoms are opt. replaced by -S; opt. N-substd. carbamoyloxy in which the -O-atoms are opt. replaced by -Sf or a quaternary amino group. (B) Salts of (I) including internal salts. (I) have antibacterial activity against Gram-pos. and esp. Gram-neg. bacteria such as penicillin-resistant S. aureus, E. coli, K. pneumoniae, S. typhosa and B. proteus. They may be used in the treatment of infections caused by these micro-organisms or may be used as feedstuff-additives, as food preserving- or disinfecting agents.
Description
Verfahren zur Herstellung neuer Derivate der 7-Aminocephalosporansäure
Gegenstand der Erfindung ist ein Verfahren zur Herstellung neuer therapeutisch wirksamer Derivate der 7-Aminocephalosporansäure der Formel I
EMI1.1
worin R1 ein gegebenenfalls substituierter Imidazol- oder hydrierrer Imidazolrest ist, der mit einem Stickstoff atom an die Acetylaminogruppe gebunden ist, und worin 2 eine durch eine Thio- oder Dithiocarbonsäure veresterte l1yoxylgruppe oder eine N-subst;tuierte Carbamyoloxygruppe ist, und ihrer Salze.
Unter einem hydrierten Imidazol ist ein Imidazolin oder Imidazolidin zu verstehen. Die Imidazolreste können auch substituiert sein, insbesondere durch Niederalkyl-, Niederalkoxy- oder Hydroxylgruppen, ferner z. B. durch Niederalkylmercaptogruppen oder Halogenatome. Die Ringe können einen oder mehr gleiche oder verschiedene Substituenten aufweisen.
Eine durch eine Thiocarbonsäure oder Dithiocarbonsäure veresterte Hydroxylgruppe R2 ist z. B. eine durch Niederalkyl-, Niederalkoxy- oder Niederalkylmercaptoreste, Halogenatome oder die Nitrogruppe substituierte mono- oder dicyclische Arylcarbonyimer- capto- oder Arylthiocarbonylmercaptogruppe, insbesondere die Benzoylmercaptogruppe. Die Thiocarbon säurederivate sind vorteilhafte Ausgangsstoffe für die Herstellung von Verbindungen der Formel I, worin R2 für eine quaternäre Aminogruppe steht.
Eine quaternäre Aminogruppe ist insbesondere eine Gruppe der Formel
EMI1.2
worin R5 für Wassenstoff oder eine oder mehrere Nie deralkyl-, Niederalkoxycarbonyl-, Carbamoyl- oder Carboxylgruppen oder ein oder mehrere Halogenatome steht.
Eine Carbamoyloxygruppe ist beispielsweise eine Gruppe der Formel -O-CO-NH-R, worin R3 ein aliphatischer, aromatischer, araliphati- scher oder heterocyclischer Rest, besonders ein unsub- stituierter oder substituierter, vorzugsweise durch eine oder mehrere Niederalkoxygruppen oder Halogenatome substituierter, gerader oder verzweigter Niederalkylrest, wie der Methyl-, Athyl-, vor allem aber der ss-Chloräthylrest, ist. Die N-substituierten Carbamoyl- oxyderivate können auch durch Umsetzung von Verbindungen, der Formel I, worin R2 für die Hydroxylgruppe steht, mit Isocyansäureestern erhalten werden.
Die Salze der neuen Verbindungen sind Metallsalze, vor allem solche von therapeutisch anwendbaren Alkali- oder Erdalkalimetallen, wie Natrium, Kalium, Ammonium, Calcium, oder Salze mit organischen Basen, z. B. Triäthylamin, N-äthylpiperidm, Dibenzyl- äthylendiamin, Procain. Ist die Gruppe R, oder R2 basische, so können sich innere Salze bilden.
Die neuen Verbindungen weisen eine antibakterielle Wirkung auf. Sie sind sowohl gegenüber grampositiven wie vor allem auch gegenüber gramnegativen Bakterien wirksam, z. B. gegen Staphyloccocus aureus penicillinresistent, Escherichia coli, Klebsielle pneumoniae, Salmonella typhosa und Bacterium proteus, wie sich auch im Tierversuch, z.B. an Mäusen, zeigt. Sie können daher zur Bekämpfung von Infektionen, die durch solche Mikroorganismen hervorgerufen werden, verwendet werden, ferner als Futtermittelzusätze, zur Konservierung von Nahrungsmitteln oder als Desinfek- tionsmittej.
Die neuen Verbindungen werden erhalten, wenn man eine Verbindung der Formel II
EMI2.1
worin Z für Wasserstoff steht und R2 die angegebene Bedeutung hat, mit einem die Gruppe R-CH2-CO enthaltenden Acyl ierungsmittel, worin Rt die angegebene Bedeutung hat, umsetzt.
Man kann die erhaltenen Verbindungen in ihre Metall-, wie Alkali- oder Erdalkalimetallsalze, oder Salze mit Ammoniak oder organischen Basen überführen oder aus erhaltenen Salzen die freien Carbonsäuren bilden.
Die Umsetzung mit dem Acylierungsmittel wird in der für die Acylierung von Aminosäuren bekannten Weise, z.B. mittels eines Säurehalogenids, besonders Säurechlorids, oder Säureazide oder eines Säureanhydrids, insbesondere eines gemischten An,hydrilds, z. B.
eines mit monoveresterter Kohlensäure, Pivalinsäure oder Trichloressigsäure gebildeten gemischten Anhydrids, oder mit der freien Säure selbst in Gegenwart eines Kondensationsm,itbels wie eines Carbodiimids, z. B. des Dicyclohexylcarbodiimids, vorgenommen.
Man kann die Acylierung der Verbindung II auch in der Weise vornehmen, dass man die Verbindung II, worin Z für Wasserstoff steht, zunächst silyliert oder stannyliert, das Silylierungs- bzw. Stannylierungsprodukt mit der Säune oder einem reaktionsfähigen Säurederivat, welches die Gruppe
R1S-CH2-COenthält, acyliert und gegebenenfalls vorhandene Silyloder Stannylgruppen durch Alkohol oder Wasser abspaltet, vgl. z. B. das britische Patent Nr. 1 073 530.
Die als Ausgangsstoffe verwendeten Cephalospo- rinderivate sind bekannt oder können nach an sich bekannten Verfahren hergestellt werden.
Die neuen Verbindungen können als Heilmittel, z. B. in Form pharmazeutischer Präparate Verwendung finden. Diese enthalten die Verbindungen in Mischung mit einem für die enterale, topicale oder parenterale Applikation geeigneten pharmazeutischen organischen oder anorganischen, feslten oder flüssigen Trägermate- rial. Die Verbindungen können auch als Zwischenprodukte verwendet wenden.
Im folgenden Beispiel sind die Temperaturen in Celsiusgraden angegeben.
Für 7-Aminocephalosporansäure wird im folgenden die Abkürzung 7-ACA gebraucht.
In der Dünnschichtchromatographie auf Silicagelplatten werden die folgenden Systeme verwendet:
System 52 = n-Butanol-Eisessig-Wasser (75 : 7,5 : 21)
System 101 A = n-Butanol-Pyndin-EisessigWasser (42: 24 : 4 : 30)
Beispiel
3,35 g O-Desacetrl4(ss-chloräthylcarbamoyl)-7-ACA werden in 35 ml Acetonitril suspendiert. Darauf wird unter intensivem Rühren soviel Triäthylamin zugetropft, dass die Säure eben in Lösung geht. Dazu gibt man unter weiterem Rühren zuerst eine Lösung von 1,3 g Imidazolyl(1)essigsäulre in 15 ml Acetonitril, dann eine Lösung von 2,1 N,N'-Dicyclohexyicarbodi- imid in 30 ml Tetrahydrofuran. Das Reaktionsgemisch bleibt 24 Stunden bei Raumtemperatur stehen.
Dann wird vom gebildeten Dicyclohexylharnstoff abfiltnert, das Filtrat mit 0,5 ml Eisessig versetzt und durch rasche Zugabe von 200 ml Äther unter intensivem Rühren das Produkt als Rohpräcipitat gefällt. Man lässt eine Stunde bei 0 C stehen, filtriert und wäscht mit Tetrahydrofuran und Äther. 4,2 g des auf diese Weise erhaltenen Rohproduktes werden in Wasser gelöst und an einer Säule von 110 ml Sephadex CM 25 C (H+-Form) (Verhältnis Durchmesser: Höhe = 1:10) chromatographiert. In den ersten ca. 250 ml des wässrigen Eluates erscheinen gefärbte Nebenprodukte, dann folgt die gewünschte Substanz in 150 ml wässerigem Eluat. Dieses Eluat wird im Vakuum auf ca. 10 ml Volumen eingeengt, und dann wird durch Zugabe von 50 ml abs. Äthanol und 1 mol Essigester das Produkt ausgefällt.
Man filtriert, wäscht mit absolutem Äthanol und Essigester und erhält die O-Desacetyl-O-(ss-chloräthylcarbamoyl)- z-[imidazolyl-(1)-acetylamino] cephalosporansäure.
Sie besitzt im Ultraviolett-Spektrum ein A max bei 254 mm, mit e = 8050 (in Wasser). Die optische Dre hungist: [a]20D = + 1540 C110 C (c = 0,83 in Wasser).
Sie zeigt im Dünnschichtchromatogramm folgende Rf-Werte: ml System 101 A = 0,3; im System Essigester-Pyridin-Eisessig-Wasser (62: 21 : 6: 11) = 0,07.
Die als Ausgangsmaterial verwendete 0-Des acetyl-O hloräthylcarbamoyi)-7-ACA kann wie folgt hergestellt werden: a) 5,50 g ca. 92-0/oige 7-ACA werden in 80 ml Wasser aufgeschlämmt und mit 0,94 n.-wässri,ger Tri ton-B-Lösung (Benzol-trimethyl-ammoniumhydroxid) auf pH 7,3 gestellt. Nach Filtrieren und Erwärmen auf 35 C werden in 2 Portionen 120 mg gereinigte Este- rase aus Bac. subtilis ATCC 6633 zugegeben. Das pH wird mittels 0,94-n. Triton B-Lösunlg auf 7,3 gehalten.
Nach 7 Stunden wird das pH durch tropfenweise Zugabe von Ameisensäure auf 6,5 gestellt und die Lösung mit Norit geklärt. Die erhaltene gelbe Lösung wird bei reduziertem Druck auf ca. 70 mol eingeengt. Man verdünnt mit 70 ml Methanol und gibt Ameisensäure bis zum pH 3,5 hinzu. Die erhaltene Suspension wird 20 Minuten im Eisbad gekühlt und filtriert. Der schwach beige gefärbte Niederschlag wird nacheinan- der mit Wasser, 50-0loigem wässerigem Methanol, Methanol, Methylenchlorid und Äther gewaschen und im Vakuumexsikkator und dann in Hochvakuum ge trocknet.
Die O-Desacetyl-7-ACA wird als feinkristalli- nes, schwach gelbliches Pulver erhalten. [α]D20 = + 1440 +10 (c = 1,023 in 0,5-n. NaHCOs). Im W-Spektmm in 0,1-n. NaHCO3 ist man = 263 nm (e = 7600).
b) 0,916 g O-Desacetyl-7-ACA werden in 60 ml abs. Methylenchlorid aufgeschlämmt und mit 0,56 ml Triäthylamin versetzt. Nach Zugabe von 1,02 ml bis-(Tri-n-butylzinn)-oxyd löst sich der Niederschlag fast vollständig auf. Unter gutem Rühren werden innert 5 Minuten 7,7 ml einer 10- /oigen Lösung von p-Chloräthylisocyanat in absolutem Methylenchlorid zugetropft. Nach einer Reaktionszeit von 1 Stunde bei Raumtemperatur filtriert man und versetzt das Filtrat mit 2 ml Wasser. Durch Zugabe von Ameisensäure (ca. 0,6 ml) wird das pH von 7,7 auf 3,5 herabgesetzt.
Die dabei erhaltene Suspension wird eine Stunde im Eisbad gekühlt. Dann nutscht man das schwach gelbliche Produkt ab, wäscht es mit Methanol, Methylenchlorid und Äther und trocknet im Wasserstrahlvakuum und dann im Hochvakuum. Man erhält die O-Desacetyl-O-(ss-chloräthylcarbamoyl)-7-ACA als feines Pulver. [a]D20 = +990 + 1 (c = 1,023 in 0,1-n. NaHCO,). Im W-Spektrum in 0,1-n. NaHCO2 ist #max = 264 nm (e = 8950).
In gleicher Weise können die folgenden Verbindungen hergestellt werden: O-Desacetyl-O-methylcarbamoyl-7- imidazolyl(1)-acetyl-ACA, [aJr20 = +1390 j 10 (c = 0,94 in Wasser); im UV Spektrum ist Man = 260nm (e = 8050); im Dünnschichtchromatogramm an Silicagel ist Rf52 = 0,03; RflotA = 0,25;
O-Desacetyl-O-äthylcarbamoyl-7-imidazolyl(1)acetyl-ACA, [a]D20 = +1500 + 10 (c = 0,98 in Wasser); im UV- Spektrum ist Ämax = 258 nu (e = 780); im Dünnschichtchromatogramm an Silicagel ist Rf52 = 0,04; RflOtA = 0,32.
PATENTANSPRUCH 1
Verfahren zur Herstellung neuer Derivate der 7-Aminocephalosporansäure der Formel I
EMI3.1
worin R1 ein gegebenenfalls substituierter Imidazoloder hydrierter Imidazolrest ist, der mit einem Stickstoffatom an die Acetylaminogruppe gebunden ist, und worin R2 eine durch eine Thio- oder Dithiocarbonsäure veresterte Hydroxylgruppe oder eine N-substituierte Carbamoyloxygrnppe ist, und ihrer Salze, dadurch gekennzeichnet, dass man eine Verbindung der Formel II
EMI3.2
worin Z für Wasserstoff steht und R2 die angegebene Bedeutung hat, mit einem die Gruppe R1C1CO enthaltenden Acylierungsmittel, worin R1 die angegebene Bedeutung hat, umsetzt.
UNTERANSPRÜCHE
1. Verfahren nach Patentanspruch I, dadurch gekennzeichnet, dass man eine Verbindung der Formel I, herstellt worin R1 ein durch Niederalkyl oder Niets ralkoxy oder Hydroxyl substituierter Imidazol- oder Imidazolinrest ist und R2 die angegebene Bedeutung hat.
2. Verfahren nach Patentanspruch I oder Unteranspruch 1, dadurch gekennzeichnet, dass man Verbindungen der Formel I herstellt, worin R1 für den Imidazol-1-ylrest steht und R2 die angegebene Bedeutung hat.
3. Verfahren nach Patentanspruch I, dadurch gekennzeichnet, dass man Verbindungen der Formel I herstellt, worin R2 für eine durch Thiobenzolsäure veresterte Hydroxylgruppe steht.
4. Verfahren nach Patentanspruch I, dadurch gekennzeichnet, dass man Verbindungen der Formel I herstellt, worin R1 für den Imidazol-1-yl oder ImMazo- lin-1-ylrest, der unsubstituiert oder durch Niederalkyl oder Niederalkoxy oder Hydroxyl substituiert ist, und R2 für eine N-substituierte Carboamoyloxygruppe steht.
5. Verfahren nach Patentanspruch I, dadurch gekennzeichnet, dass man Verbindungen der Formel I herstellt, worin R1 für einen Imidazol-1-yl- oder Imi- dazolin-1-ylrest, der unsubstituiert oder durch Niederalkyl oder Niederalkoxy oder Hydroxyl substituiert ist, und R2 für eine Nied'eralkyl-carbamoyloxygruppe steht.
6. Verfahren nach Patentanspruch I, dadurch gekennzeichnet, dass man Verbindungen der Formel I herstellt, worin R1 für den Imidazol-1-yl- oder Imidazolin-1-ylrest, der unsubstituiert oder durch Niederagl- kyl oder Niederalkoxy oder Hydroxyl substituiert ist, und R2 für eine durch Halogen substituierte Niederalkyl-carbamoyloxygruppe steht.
7. Verfahren nach Patentanspruch I, dadurch gekennzeichnet, dass man Verbindungen der Formel I herstellt, worin R1 für den Imidazol-1-yl- oder Imida zoiin-1-ylrest, der unsubstituiert oder durch Niederalkyl oder Niederalkoxy oder Hydroxyl substituiert ist, und R2 für eine durch ein oder mehrere Chloratome substituierte Niederalkyl-carbamoyloxygruppe steht.
8. Verfahren nach Patentanspruch I oder Untenan- spruch 1, dadurch gekennzeichnet, dass man Verbin
**WARNUNG** Ende DESC Feld konnte Anfang CLMS uberlappen**.
Process for the preparation of new derivatives of 7-aminocephalosporanic acid
The invention relates to a process for the preparation of new therapeutically effective derivatives of 7-aminocephalosporanic acid of the formula I
EMI1.1
in which R1 is an optionally substituted imidazole or hydrogenated imidazole radical which is bonded to the acetylamino group with a nitrogen atom, and in which 2 is a l1yoxyl group esterified by a thio- or dithiocarboxylic acid or an N-substituted carbamyoloxy group, and their salts.
A hydrogenated imidazole is to be understood as meaning an imidazoline or imidazolidine. The imidazole radicals can also be substituted, in particular by lower alkyl, lower alkoxy or hydroxyl groups, also z. B. by lower alkyl mercapto groups or halogen atoms. The rings can have one or more identical or different substituents.
A hydroxyl group R2 esterified by a thiocarboxylic acid or dithiocarboxylic acid is e.g. B. a mono- or dicyclic arylcarbonyimer- capto- or arylthiocarbonylmercapto group, in particular the benzoyl mercapto group, substituted by lower alkyl, lower alkoxy or lower alkyl mercapto radicals, halogen atoms or the nitro group. The thiocarboxylic acid derivatives are advantageous starting materials for the preparation of compounds of the formula I in which R2 is a quaternary amino group.
A quaternary amino group is in particular a group of the formula
EMI1.2
wherein R5 represents hydrogen or one or more lower alkyl, lower alkoxycarbonyl, carbamoyl or carboxyl groups or one or more halogen atoms.
A carbamoyloxy group is, for example, a group of the formula -O-CO-NH-R, in which R3 is an aliphatic, aromatic, araliphatic or heterocyclic radical, especially an unsubstituted or substituted, preferably straight-line one substituted by one or more lower alkoxy groups or halogen atoms or branched lower alkyl radical, such as the methyl, ethyl, but especially the β-chloroethyl radical. The N-substituted carbamoyl oxy derivatives can also be obtained by reacting compounds of the formula I, in which R 2 is the hydroxyl group, with isocyanic acid esters.
The salts of the new compounds are metal salts, especially those of therapeutically applicable alkali or alkaline earth metals, such as sodium, potassium, ammonium, calcium, or salts with organic bases, e.g. B. triethylamine, N-äthylpiperidm, dibenzyl ethylenediamine, procaine. If the group R or R2 is basic, internal salts can form.
The new compounds have an antibacterial effect. They are effective against both gram-positive and especially against gram-negative bacteria, e.g. B. against Staphyloccocus aureus penicillin-resistant, Escherichia coli, Klebsielle pneumoniae, Salmonella typhosa and Bacterium proteus, as also found in animal experiments, e.g. on mice, shows. They can therefore be used to combat infections caused by such microorganisms, furthermore as feed additives, for preserving food or as disinfection agents.
The new compounds are obtained when a compound of the formula II
EMI2.1
where Z is hydrogen and R2 has the meaning given, is reacted with an acylating agent containing the group R-CH2-CO, where Rt has the meaning given.
The compounds obtained can be converted into their metal salts, such as alkali metal or alkaline earth metal salts, or salts with ammonia or organic bases, or the free carboxylic acids can be formed from the salts obtained.
The reaction with the acylating agent is carried out in the manner known for the acylation of amino acids, e.g. by means of an acid halide, especially acid chloride, or acid azides or an acid anhydride, especially a mixed type, hydrild, e.g. B.
a mixed anhydride formed with monoesterified carbonic acid, pivalic acid or trichloroacetic acid, or with the free acid itself in the presence of a condensation agent such as a carbodiimide, e.g. B. the dicyclohexylcarbodiimide made.
The acylation of the compound II can also be carried out in such a way that the compound II, in which Z is hydrogen, is first silylated or stannylated, the silylation or stannylation product with the acid or a reactive acid derivative which the group
R1S-CH2-CO contains, acylated and any silyl or stannyl groups present are split off by alcohol or water, cf. z. E.g. British Patent No. 1,073,530.
The cephalosporine derivatives used as starting materials are known or can be prepared by processes known per se.
The new compounds can be used as remedies, e.g. B. find use in the form of pharmaceutical preparations. These contain the compounds as a mixture with a pharmaceutical, organic or inorganic, solid or liquid carrier material suitable for enteral, topical or parenteral administration. The compounds can also be used as intermediates.
In the following example the temperatures are given in degrees Celsius.
The abbreviation 7-ACA is used below for 7-aminocephalosporanic acid.
The following systems are used in thin layer chromatography on silica gel plates:
System 52 = n-butanol-glacial acetic acid-water (75: 7.5: 21)
System 101 A = n-butanol-pyndine-glacial acetic acid water (42: 24: 4: 30)
example
3.35 g of O-deacetr14 (ß-chloroethylcarbamoyl) -7-ACA are suspended in 35 ml of acetonitrile. Then enough triethylamine is added dropwise with vigorous stirring that the acid just dissolves. A solution of 1.3 g of imidazolyl (1) acetic acid in 15 ml of acetonitrile, then a solution of 2.1 N, N'-dicyclohexyicarbodi-imide in 30 ml of tetrahydrofuran, is added with further stirring. The reaction mixture remains at room temperature for 24 hours.
The dicyclohexylurea formed is then filtered off, 0.5 ml of glacial acetic acid is added to the filtrate and the product is precipitated as a crude precipitate by rapidly adding 200 ml of ether while stirring intensively. The mixture is left to stand at 0 ° C. for one hour, filtered and washed with tetrahydrofuran and ether. 4.2 g of the crude product obtained in this way are dissolved in water and chromatographed on a column of 110 ml Sephadex CM 25 C (H + form) (diameter: height ratio = 1:10). Colored by-products appear in the first approx. 250 ml of the aqueous eluate, then the desired substance follows in 150 ml of aqueous eluate. This eluate is concentrated in vacuo to a volume of approx. 10 ml, and then abs. Ethanol and 1 mol of ethyl acetate precipitated the product.
It is filtered, washed with absolute ethanol and ethyl acetate, and O-deacetyl-O- (s-chloroethylcarbamoyl) -z- [imidazolyl- (1) -acetylamino] cephalosporanic acid is obtained.
In the ultraviolet spectrum it has an A max at 254 mm, with e = 8050 (in water). The optical rotation is: [a] 20D = + 1540 C110 C (c = 0.83 in water).
It shows the following Rf values in the thin-layer chromatogram: ml system 101 A = 0.3; in the system ethyl acetate-pyridine-glacial acetic acid-water (62: 21: 6: 11) = 0.07.
The 0-Des acetyl-O (chloroethylcarbamoyi) -7-ACA used as starting material can be prepared as follows: a) 5.50 g of approx. 92-0 / o 7-ACA are suspended in 80 ml of water and with 0.94 n .-Aqueous, ger triton B solution (benzene-trimethyl-ammonium hydroxide) adjusted to pH 7.3. After filtering and heating to 35 ° C., 120 mg of purified esterase from Bac. subtilis ATCC 6633 added. The pH is measured using 0.94-n. Triton B solution kept at 7.3.
After 7 hours, the pH is adjusted to 6.5 by adding formic acid dropwise and the solution is clarified with Norit. The yellow solution obtained is concentrated to about 70 mol under reduced pressure. It is diluted with 70 ml of methanol and formic acid is added up to pH 3.5. The suspension obtained is cooled in an ice bath for 20 minutes and filtered. The pale beige colored precipitate is washed in succession with water, 50% aqueous methanol, methanol, methylene chloride and ether and dried in a vacuum desiccator and then in a high vacuum.
The O-deacetyl-7-ACA is obtained as a finely crystalline, pale yellowish powder. [α] D20 = + 1440 +10 (c = 1.023 in 0.5-n. NaHCOs). In the W spectrum in 0.1-n. NaHCO3 is one = 263 nm (e = 7600).
b) 0.916 g of O-deacetyl-7-ACA are in 60 ml of abs. Slurried methylene chloride and treated with 0.56 ml of triethylamine. After adding 1.02 ml of bis (tri-n-butyltin) oxide, the precipitate dissolves almost completely. 7.7 ml of a 10% solution of p-chloroethyl isocyanate in absolute methylene chloride are added dropwise over a period of 5 minutes with thorough stirring. After a reaction time of 1 hour at room temperature, the mixture is filtered and the filtrate is treated with 2 ml of water. By adding formic acid (approx. 0.6 ml) the pH is reduced from 7.7 to 3.5.
The suspension obtained is cooled in an ice bath for one hour. The pale yellowish product is then filtered off with suction, washed with methanol, methylene chloride and ether and dried in a water-jet vacuum and then in a high vacuum. The O-deacetyl-O- (ss-chloroethylcarbamoyl) -7-ACA is obtained as a fine powder. [a] D20 = +990 + 1 (c = 1.023 in 0.1-n. NaHCO,). In the W spectrum in 0.1-n. NaHCO2 is #max = 264 nm (e = 8950).
The following compounds can be prepared in the same way: O-deacetyl-O-methylcarbamoyl-7-imidazolyl (1) -acetyl-ACA, [aJr20 = +1390 j 10 (c = 0.94 in water); in the UV spectrum Man = 260 nm (e = 8050); in the thin-layer chromatogram on silica gel, Rf52 = 0.03; RflotA = 0.25;
O-deacetyl-O-ethylcarbamoyl-7-imidazolyl (1) acetyl-ACA, [a] D20 = +1500 + 10 (c = 0.98 in water); in the UV spectrum, λ max = 258 nu (e = 780); in the thin-layer chromatogram on silica gel, Rf52 = 0.04; RflOtA = 0.32.
PATENT CLAIM 1
Process for the preparation of new derivatives of 7-aminocephalosporanic acid of the formula I.
EMI3.1
where R1 is an optionally substituted imidazole or hydrogenated imidazole radical which is bonded to the acetylamino group with a nitrogen atom, and where R2 is a hydroxyl group esterified by a thio- or dithiocarboxylic acid or an N-substituted carbamoyloxy group, and its salts, characterized in that one Compound of formula II
EMI3.2
in which Z is hydrogen and R2 has the meaning given, is reacted with an acylating agent containing the group R1C1CO in which R1 has the meaning given.
SUBCLAIMS
1. Process according to claim I, characterized in that a compound of the formula I is prepared in which R1 is an imidazole or imidazoline radical substituted by lower alkyl or Niets ralkoxy or hydroxyl and R2 has the meaning given.
2. The method according to claim I or dependent claim 1, characterized in that compounds of the formula I are prepared in which R1 is the imidazol-1-yl radical and R2 has the meaning given.
3. The method according to claim I, characterized in that compounds of the formula I are prepared in which R2 is a hydroxyl group esterified by thiobenzenic acid.
4. The method according to claim I, characterized in that compounds of the formula I are prepared in which R1 is the imidazol-1-yl or immazolin-1-yl radical which is unsubstituted or substituted by lower alkyl or lower alkoxy or hydroxyl, and R2 represents an N-substituted carboamoyloxy group.
5. The method according to claim I, characterized in that compounds of the formula I are prepared in which R1 is an imidazol-1-yl or imidazolin-1-yl radical which is unsubstituted or substituted by lower alkyl or lower alkoxy or hydroxyl, and R2 stands for a lower alkyl carbamoyloxy group.
6. The method according to claim I, characterized in that compounds of the formula I are prepared in which R1 is the imidazol-1-yl or imidazolin-1-yl radical which is unsubstituted or substituted by lower alkyl or lower alkoxy or hydroxyl, and R2 represents a halogen-substituted lower alkyl-carbamoyloxy group.
7. The method according to claim I, characterized in that compounds of the formula I are prepared in which R1 represents the imidazol-1-yl or imidazoiin-1-yl radical which is unsubstituted or substituted by lower alkyl or lower alkoxy or hydroxyl, and R2 represents a lower alkyl-carbamoyloxy group substituted by one or more chlorine atoms.
8. The method according to claim I or lower claim 1, characterized in that one Verbin
** WARNING ** End of DESC field could overlap beginning of CLMS **.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH1228370A CH498152A (en) | 1968-01-02 | 1968-01-02 | 7-aminocephalosporanic acid derivs antibacterial |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH1228370A CH498152A (en) | 1968-01-02 | 1968-01-02 | 7-aminocephalosporanic acid derivs antibacterial |
| CH268A CH497462A (en) | 1968-01-02 | 1968-01-02 | 7-aminocephalosporanic acid derivs antibacterial |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH498152A true CH498152A (en) | 1970-10-31 |
Family
ID=4177186
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH1228370A CH498152A (en) | 1968-01-02 | 1968-01-02 | 7-aminocephalosporanic acid derivs antibacterial |
| CH268A CH497462A (en) | 1968-01-02 | 1968-01-02 | 7-aminocephalosporanic acid derivs antibacterial |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH268A CH497462A (en) | 1968-01-02 | 1968-01-02 | 7-aminocephalosporanic acid derivs antibacterial |
Country Status (3)
| Country | Link |
|---|---|
| AT (2) | AT291435B (en) |
| CH (2) | CH498152A (en) |
| SU (2) | SU419039A3 (en) |
-
1968
- 1968-01-02 CH CH1228370A patent/CH498152A/en not_active IP Right Cessation
- 1968-01-02 CH CH268A patent/CH497462A/en not_active IP Right Cessation
- 1968-12-30 SU SU1731628A patent/SU419039A3/ru active
- 1968-12-30 AT AT1268368A patent/AT291435B/en not_active IP Right Cessation
- 1968-12-30 AT AT847370A patent/AT295038B/en not_active IP Right Cessation
- 1968-12-30 SU SU1294047A patent/SU419040A3/en active
Also Published As
| Publication number | Publication date |
|---|---|
| AT295038B (en) | 1971-12-27 |
| SU419039A3 (en) | 1974-03-05 |
| SU419040A3 (en) | 1974-03-05 |
| CH497462A (en) | 1970-10-15 |
| AT291435B (en) | 1971-07-12 |
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