JPS6155905B2 - - Google Patents

Info

Publication number
JPS6155905B2
JPS6155905B2 JP58012560A JP1256083A JPS6155905B2 JP S6155905 B2 JPS6155905 B2 JP S6155905B2 JP 58012560 A JP58012560 A JP 58012560A JP 1256083 A JP1256083 A JP 1256083A JP S6155905 B2 JPS6155905 B2 JP S6155905B2
Authority
JP
Japan
Prior art keywords
formula
group
ester
ethyl
hydrogen
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
Application number
JP58012560A
Other languages
Japanese (ja)
Other versions
JPS58185553A (en
Inventor
Michihiko Ochiai
Akira Morimoto
Yoshihiro Matsushita
Nobuchika Aki
Taiichi Okada
Kenji Kawakita
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Takeda Pharmaceutical Co Ltd
Original Assignee
Takeda Chemical Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Takeda Chemical Industries Ltd filed Critical Takeda Chemical Industries Ltd
Publication of JPS58185553A publication Critical patent/JPS58185553A/en
Publication of JPS6155905B2 publication Critical patent/JPS6155905B2/ja
Granted legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D277/00Heterocyclic compounds containing 1,3-thiazole or hydrogenated 1,3-thiazole rings
    • C07D277/02Heterocyclic compounds containing 1,3-thiazole or hydrogenated 1,3-thiazole rings not condensed with other rings
    • C07D277/20Heterocyclic compounds containing 1,3-thiazole or hydrogenated 1,3-thiazole rings not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members
    • C07D277/32Heterocyclic compounds containing 1,3-thiazole or hydrogenated 1,3-thiazole rings not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
    • C07D277/34Oxygen atoms
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61PSPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P31/00Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics
    • A61P31/04Antibacterial agents
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D277/00Heterocyclic compounds containing 1,3-thiazole or hydrogenated 1,3-thiazole rings
    • C07D277/02Heterocyclic compounds containing 1,3-thiazole or hydrogenated 1,3-thiazole rings not condensed with other rings
    • C07D277/20Heterocyclic compounds containing 1,3-thiazole or hydrogenated 1,3-thiazole rings not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members
    • C07D277/32Heterocyclic compounds containing 1,3-thiazole or hydrogenated 1,3-thiazole rings not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
    • C07D277/38Nitrogen atoms
    • C07D277/40Unsubstituted amino or imino radicals
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D277/00Heterocyclic compounds containing 1,3-thiazole or hydrogenated 1,3-thiazole rings
    • C07D277/02Heterocyclic compounds containing 1,3-thiazole or hydrogenated 1,3-thiazole rings not condensed with other rings
    • C07D277/20Heterocyclic compounds containing 1,3-thiazole or hydrogenated 1,3-thiazole rings not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members
    • C07D277/32Heterocyclic compounds containing 1,3-thiazole or hydrogenated 1,3-thiazole rings not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
    • C07D277/38Nitrogen atoms
    • C07D277/44Acylated amino or imino radicals
    • C07D277/46Acylated amino or imino radicals by carboxylic acids, or sulfur or nitrogen analogues thereof
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00Technologies relating to chemical industry
    • Y02P20/50Improvements relating to the production of bulk chemicals
    • Y02P20/55Design of synthesis routes, e.g. reducing the use of auxiliary or protecting groups

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Communicable Diseases (AREA)
  • Pharmacology & Pharmacy (AREA)
  • Oncology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Cephalosporin Compounds (AREA)
  • Thiazole And Isothizaole Compounds (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

【発明の詳細な説明】 本発明は、式 [式中、Xはハロゲン原子を、R5は保護された水
酸基を示す。]で表わされる化合物のエステル及
びその製造法に関する。
DETAILED DESCRIPTION OF THE INVENTION The present invention is based on the formula [In the formula, X represents a halogen atom and R 5 represents a protected hydroxyl group. This invention relates to an ester of a compound represented by the following formula and a method for producing the same.

本発明の化合物[XII]のエステルは、式 〔式中、R12は低級アルコキシ基または保護されて
いてもよいアミノ基を示す。〕で表わされる化合
物と反応させ、要すれば保護基を除去することに
より、式 〔式中、R13は水酸基または保護されていてもよい
アミノ基を、他は前記と同意義。〕で表わされる
化合物を製造するための有用な合成中間体であつ
て、得られる化合物〔XI〕は、たとえば式 〔式中、R3は水素またはメトキシ基を、R4は水素
または求核性化合物残基を示す。〕で表わされる
化合物と反応させ、要すれば保護基を除去して、
広くグラム陽性菌、陰性菌に対し高い抗菌力を示
す式 〔式中の記号は前記と同意義。〕で表わされる化合
物などを製造するのに有用である。
The ester of the compound [XII] of the present invention has the formula [In the formula, R 12 represents a lower alkoxy group or an optionally protected amino group. ] By reacting with a compound represented by the formula and removing the protecting group if necessary, the formula [In the formula, R 13 is a hydroxyl group or an optionally protected amino group, and the others are as defined above. ] is a useful synthetic intermediate for producing the compound represented by the formula, and the obtained compound [XI] is, for example, [In the formula, R 3 represents hydrogen or a methoxy group, and R 4 represents hydrogen or a nucleophilic compound residue. ], removing the protecting group if necessary,
A formula that shows high antibacterial activity against a wide range of Gram-positive and Gram-negative bacteria. [Symbols in the formula have the same meanings as above. It is useful for producing compounds represented by the following.

化合物〔XII〕において、R5は保護された水酸
基を示す。このような水酸基の保護基としては本
発明における各反応を阻害しない限りいかなるも
のでもよく通常メチル、エチルのような低級アル
キル基、フエニル、チエニルのようなアリール
基、アセチル、ベンゾイルのようなアシル基が用
いられる。化合物〔XII〕中、は塩素、臭素、ヨ
ウ素、フツ素などのハロゲンを示す。また、カル
ボキシル基は保護されている。このような保護基
としては、酸性条件、アルカリ性条件、還元条件
等の緩和な条件で除去しうるものなら何でもよ
く、たとえば一般にペプチド合成においてカルボ
キシル基の保護基として用いられるものから選択
され、たとえばメチル、エチル、プロピル、イソ
プロピル、ブチル、第2ブチル、イソブチル、第
3ブチルなどのアルキル基、β−メチルスルホニ
ルエチル、トリクロルエチル、ジフエニルメチル
などの置換アルキル基、フエニル、トリルなどの
アリール基、p−第3ブチルフエニル、p−ニト
ロフエニルなどの置換アリール基、ベンジル、フ
エネチル、トルベンジルなどのアラルキル基、p
−メトキシベンジル、p−ニトロベンジルなどの
置換アラルキル基などが用いられる。この化合物
〔XII〕は保護されたオキシイミノ基に関して理論
的にsyn−およびanti−の両異性体が存在し、両
者とも同様に有用な合成中間体として用いられ
る。
In compound [XII], R 5 represents a protected hydroxyl group. Any type of protecting group for the hydroxyl group may be used as long as it does not inhibit each reaction in the present invention. Usually, lower alkyl groups such as methyl and ethyl, aryl groups such as phenyl and thienyl, and acyl groups such as acetyl and benzoyl are used. is used. In compound [XII], represents a halogen such as chlorine, bromine, iodine, or fluorine. Furthermore, the carboxyl group is protected. Any protecting group may be used as long as it can be removed under mild conditions such as acidic conditions, alkaline conditions, and reducing conditions. , alkyl groups such as ethyl, propyl, isopropyl, butyl, sec-butyl, isobutyl, tertiary-butyl, substituted alkyl groups such as β-methylsulfonylethyl, trichloroethyl, diphenylmethyl, aryl groups such as phenyl, tolyl, Substituted aryl groups such as 3-butylphenyl and p-nitrophenyl, aralkyl groups such as benzyl, phenethyl, and tolbenzyl, p
Substituted aralkyl groups such as -methoxybenzyl and p-nitrobenzyl are used. This compound [XII] theoretically exists in both syn- and anti-isomers with respect to the protected oximino group, and both are equally useful as synthetic intermediates.

化合物〔XII〕のエステルは、対応するα位に保
護されたオキシイミノ基を有するβ−ケト酪酸の
エステルを常法に従つてハロゲン化することによ
つて得られる。
The ester of compound [XII] can be obtained by halogenating the corresponding ester of β-ketobutyric acid having a protected oximino group at the α-position according to a conventional method.

実施例 1 α−エトキシイミノ−β−ケト酪酸エチルエス
テル18.7gをクロロホルム100mlに溶解し、氷冷
下に臭素15.9gをクロロホルム20mlに溶解した液
を徐々に滴下する。30分間撹拌したのち、室温に
もどしてさらに1.5時間撹拌する。反応混合物を
水洗し、炭酸水素ナトリウム水溶液にて洗浄した
のち、さらに水洗し硫酸マグネシウムで乾燥す
る。で乾燥し、溶媒を留去してα−エトキシイミ
ノ−β−ケト−γ−ブロム酪酸エチルを得る。
Example 1 18.7 g of α-ethoxyimino-β-ketobutyric acid ethyl ester is dissolved in 100 ml of chloroform, and a solution of 15.9 g of bromine dissolved in 20 ml of chloroform is gradually added dropwise under ice cooling. After stirring for 30 minutes, return to room temperature and stir for an additional 1.5 hours. The reaction mixture is washed with water, an aqueous sodium bicarbonate solution, further washed with water, and dried over magnesium sulfate. and evaporate the solvent to obtain ethyl α-ethoxyimino-β-keto-γ-bromobutyrate.

NMR(CDCl3):δ1.20〜1.60(m、6H、CH3
×2)、4.10〜4.60(m、4H、CH2×2)、4.32
(s、2H、BrCH2) 得られたものにエタノール250mlを加え、チオ
尿素15.2gを加えて2時間還流する。冷却したの
ち溶媒を減圧留去し、残留物に水250mlを加える
と固体が析出する。これを取し、水洗したのち
乾燥するとα−エトキシイミノ−2−アミノチア
ゾール−4−イル酢酸エチルエステル臭化水素酸
塩17.9gが得られる。収率55%。
NMR ( CDCl3 ): δ1.20-1.60 (m, 6H, CH3
×2), 4.10 to 4.60 (m, 4H, CH 2 ×2), 4.32
(s, 2H, BrCH 2 ) Add 250 ml of ethanol to the obtained mixture, add 15.2 g of thiourea, and reflux for 2 hours. After cooling, the solvent was distilled off under reduced pressure, and 250 ml of water was added to the residue to precipitate a solid. This is taken, washed with water, and then dried to obtain 17.9 g of α-ethoxyimino-2-aminothiazol-4-yl acetic acid ethyl ester hydrobromide. Yield 55%.

元素分析値 C9H14N3O3SBr 計算値:C 33.34;H 4.35;N 12.96 実測値:C 32.52;H 3.98;N 12.92 本品の核磁気共鳴スペクトル(100MHz、d6
DMSO中)は1.30および1.32ppmに2種類のエチ
ル基メチル水素の三重線、4.28および4.37ppmに
2種類のエチル基メチレン水素の四重線、
7.63ppmにチアゾール5位水素の単線、9.12ppm
にアミノ基水素の巾広い単線共鳴線を示す。
Elemental analysis value C 9 H 14 N 3 O 3 SBr Calculated value: C 33.34; H 4.35; N 12.96 Actual value: C 32.52; H 3.98; N 12.92 Nuclear magnetic resonance spectrum of this product (100MHz, d 6 -
(in DMSO) has two types of ethyl group methyl hydrogen triplet at 1.30 and 1.32 ppm, two types of ethyl group methylene hydrogen quartet at 4.28 and 4.37 ppm,
Single line of thiazole 5-position hydrogen at 7.63ppm, 9.12ppm
shows a broad single-line resonance line of amino group hydrogen.

実施例 2 (1) α−メトキシイミノ−β−ケト酪酸エチル
27.3gをクロロホルム120mlに溶かし、これに
氷冷下臭素25.3gをクロロホルム30mlに溶かし
た液を30分間で滴下する。その後室温で1時間
撹拌し反応させる。反応物を希炭酸水素ナトリ
ウム水溶液、水で洗浄した後有機層を乾燥す
る。溶剤を留去して粗製のα−メトキシイミノ
−β−ケト−γ−ブロム酪酸エチルを油状物と
して得る。
Example 2 (1) Ethyl α-methoxyimino-β-ketobutyrate
27.3 g was dissolved in 120 ml of chloroform, and a solution of 25.3 g of bromine dissolved in 30 ml of chloroform was added dropwise to this solution over 30 minutes under ice cooling. Thereafter, the mixture is stirred at room temperature for 1 hour to react. After washing the reaction product with a dilute aqueous sodium hydrogen carbonate solution and water, the organic layer is dried. The solvent is distilled off to obtain crude ethyl α-methoxyimino-β-keto-γ-bromobutyrate as an oil.

NMR(CDCl3):δ1.30(t、3H、CH3)、
4.12(s、3H、OCH3)、4.32(s、2H、
BrCH2)、4.33(q、2H、CH2) (2) 本品全量をエタノール250mlに溶かし、これ
にチオ尿素24gを加えて3時間加熱還流させ
る。冷後析出物を取しエタノールで洗浄す
る。得られた結晶状物質を酢酸エチル:テトラ
ヒドロフラン(1:1)混合物300mlに懸濁し
10%炭酸水素ナトリウム水溶液を200ml加えて
よくふり有機層を分取する。乾燥後溶剤を留去
して得られた結晶をエーテルで洗浄しα−メト
キシイミノ−α−(2−アミノチアゾール−4
−イル)酢酸エチルを得る。16.86g。融点112
〜113℃。
NMR (CDCl 3 ): δ1.30 (t, 3H, CH 3 ),
4.12 (s, 3H, OCH 3 ), 4.32 (s, 2H,
BrCH 2 ), 4.33 (q, 2H, CH 2 ) (2) Dissolve the entire amount of this product in 250 ml of ethanol, add 24 g of thiourea, and heat under reflux for 3 hours. After cooling, remove the precipitate and wash with ethanol. The obtained crystalline material was suspended in 300 ml of a mixture of ethyl acetate and tetrahydrofuran (1:1).
Add 200 ml of 10% sodium bicarbonate aqueous solution, shake well, and separate the organic layer. After drying, the solvent was distilled off and the resulting crystals were washed with ether to give α-methoxyimino-α-(2-aminothiazole-4
-yl) ethyl acetate is obtained. 16.86g. Melting point 112
~113℃.

元素分析値 C8H11N3O3S 計算値:C 41.91;H 4.84 実測値:C 41.20;H 4.70 核磁気共鳴スペクトル(60MHz、CDCl3中)
は4.04ppmにメトキシ水素の単線、7.44ppmにチ
アゾール環5位水素の単線共鳴線を示す。
Elemental analysis value C 8 H 11 N 3 O 3 S Calculated value: C 41.91; H 4.84 Actual value: C 41.20; H 4.70 Nuclear magnetic resonance spectrum (60 MHz, in CDCl 3 )
shows a single line of methoxy hydrogen at 4.04 ppm and a single line resonance line of hydrogen at the 5-position of the thiazole ring at 7.44 ppm.

Claims (1)

【特許請求の範囲】 1 式 [式中、Xはハロゲン原子を、R5は保護された水
酸基を示す]で表わされる化合物のエステル。 2 式 [式中、R5は保護された水酸基を示す]で表わさ
れる化合物のエステルをハロゲン化することを特
徴とする式 [式中、Xはハロゲン原子を、R5は前記と同意義
を示す]で表わされる化合物のエステルの製造
法。
[Claims] 1 formula An ester of a compound represented by the formula [wherein, X represents a halogen atom and R 5 represents a protected hydroxyl group]. 2 formulas A formula characterized by halogenating an ester of a compound represented by [wherein R 5 represents a protected hydroxyl group] A method for producing an ester of a compound represented by the formula [wherein, X represents a halogen atom and R 5 has the same meaning as defined above].
JP58012560A 1975-06-09 1983-01-27 Alpha-protected oxyimino-beta-keto-gamma-halogenobutyric acid Granted JPS58185553A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB24611/75 1975-06-09
GB24611/75A GB1536281A (en) 1975-06-09 1975-06-09 Cephem compounds

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP56087403A Division JPS5858353B2 (en) 1975-06-09 1981-06-05 Cefem or penam compound and its production method

Publications (2)

Publication Number Publication Date
JPS58185553A JPS58185553A (en) 1983-10-29
JPS6155905B2 true JPS6155905B2 (en) 1986-11-29

Family

ID=10214399

Family Applications (5)

Application Number Title Priority Date Filing Date
JP51067524A Expired JPS5822039B2 (en) 1975-06-09 1976-06-08 Thiazole compound and its manufacturing method
JP56087403A Expired JPS5858353B2 (en) 1975-06-09 1981-06-05 Cefem or penam compound and its production method
JP58012560A Granted JPS58185553A (en) 1975-06-09 1983-01-27 Alpha-protected oxyimino-beta-keto-gamma-halogenobutyric acid
JP58178160A Pending JPS5989686A (en) 1975-06-09 1983-09-28 Cephem or penam compound
JP60232072A Granted JPS61143388A (en) 1975-06-09 1985-10-16 Cephem compound

Family Applications Before (2)

Application Number Title Priority Date Filing Date
JP51067524A Expired JPS5822039B2 (en) 1975-06-09 1976-06-08 Thiazole compound and its manufacturing method
JP56087403A Expired JPS5858353B2 (en) 1975-06-09 1981-06-05 Cefem or penam compound and its production method

Family Applications After (2)

Application Number Title Priority Date Filing Date
JP58178160A Pending JPS5989686A (en) 1975-06-09 1983-09-28 Cephem or penam compound
JP60232072A Granted JPS61143388A (en) 1975-06-09 1985-10-16 Cephem compound

Country Status (7)

Country Link
JP (5) JPS5822039B2 (en)
AT (2) AT344894B (en)
GB (1) GB1536281A (en)
HK (1) HK2282A (en)
HU (1) HU172304B (en)
MY (1) MY8200219A (en)
SE (1) SE444809B (en)

Families Citing this family (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1536281A (en) * 1975-06-09 1978-12-20 Takeda Chemical Industries Ltd Cephem compounds
DK154939C (en) * 1974-12-19 1989-06-12 Takeda Chemical Industries Ltd METHOD OF ANALOGUE FOR THE PREPARATION OF THIAZOLYLACETAMIDO-CEPHEM COMPOUNDS OR PHARMACEUTICAL ACCEPTABLE SALTS OR ESTERS THEREOF
FR2346014A1 (en) * 1976-01-23 1977-10-28 Roussel Uclaf Amino-thiazolyl-hydroxyimino-acetamido-cephalosporanic acids - with antibacterial activity
SE440655B (en) * 1976-01-23 1985-08-12 Roussel Uclaf SET TO MAKE NEW OXIME DERIVATIVES OF 7-AMINO-THIAZOLYL-ACETAMIDO-CEPHALOSPORANIC ACID
GB1576625A (en) * 1976-04-12 1980-10-08 Fujisawa Pharmaceutical Co Syn isomer 3,7 disubstituted 3 cephem 4 carboxylic acid compounds and processes for the preparation thereof
FI771866A (en) * 1976-06-28 1977-12-29 Fujisawa Pharmaceutical Co
AU520269B2 (en) * 1977-03-14 1982-01-21 Fujisawa Pharmaceutical Co., Ltd. Cephem and cepham compounds
PH17188A (en) * 1977-03-14 1984-06-14 Fujisawa Pharmaceutical Co New cephem and cepham compounds and their pharmaceutical compositions and method of use
US4370326A (en) * 1977-09-13 1983-01-25 Fujisawa Pharmaceutical Co., Ltd. Cephem compounds and composition
JPS5444695A (en) * 1977-09-13 1979-04-09 Fujisawa Pharmaceut Co Ltd 3,7-disubstituted-3-cephem-4-carboxylic acid and its salt and their preparation
FR2410655A1 (en) * 1977-12-05 1979-06-29 Roussel Uclaf NEW OXIMES DERIVED FROM 3-SUBSTITUTE 7-AMINO THIAZOLYL ACETAMIDO CEPHALOSPORANIC, THEIR METHOD OF PREPARATION AND THEIR APPLICATION AS MEDICINAL PRODUCTS
DE2758001A1 (en) * 1977-12-24 1979-07-12 Hoechst Ag CEPHALOSPORINE DERIVATIVES AND METHOD FOR THEIR PRODUCTION
FR2387235A1 (en) * 1978-01-23 1978-11-10 Fujisawa Pharmaceutical Co PROCESS FOR THE PREPARATION OF COMPOUNDS OF 3,7-DISUBSTITUE-3-CEPHEM-4-CARBOXYLIC ACID AND NEW PRODUCTS THUS OBTAINED, HAVING A STRONG ANTIBACTERIAL ACTIVITY
JPS54106495A (en) * 1978-02-09 1979-08-21 Dai Ichi Seiyaku Co Ltd Cephem derivative
JPS54128594A (en) * 1978-03-27 1979-10-05 Fujisawa Pharmaceut Co Ltd 3,7-disubstituted-3-cephem-4-carboxylic acid derivative
FR2432521A1 (en) * 1978-03-31 1980-02-29 Roussel Uclaf NOVEL O-SUBSTITUTED OXIMES DERIVED FROM 7-AMINO THIAZOLYL ACETAMIDO CEPHALOSPORANIC ACID, THEIR PREPARATION PROCESS AND THEIR USE AS MEDICAMENTS
DE2818263A1 (en) * 1978-04-26 1979-11-08 Bayer Ag BETA LACTAMANTIBIOTICS
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SE7713233L (en) 1977-11-23
JPS51149296A (en) 1976-12-22
HK2282A (en) 1982-01-22
ATA967775A (en) 1977-12-15
HU172304B (en) 1978-07-28
JPS5858353B2 (en) 1983-12-24
MY8200219A (en) 1982-12-31
AT344894B (en) 1978-08-10
JPH0346474B2 (en) 1991-07-16
GB1536281A (en) 1978-12-20
JPS5822039B2 (en) 1983-05-06
JPS5756485A (en) 1982-04-05
ATA517177A (en) 1978-05-15
JPS58185553A (en) 1983-10-29
AT347587B (en) 1979-01-10
JPS5989686A (en) 1984-05-23
JPS61143388A (en) 1986-07-01
SE444809B (en) 1986-05-12

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