JP2719624B2 - Method for producing 4-acyloxy-2-azetidinone derivative - Google Patents

Method for producing 4-acyloxy-2-azetidinone derivative

Info

Publication number
JP2719624B2
JP2719624B2 JP63263766A JP26376688A JP2719624B2 JP 2719624 B2 JP2719624 B2 JP 2719624B2 JP 63263766 A JP63263766 A JP 63263766A JP 26376688 A JP26376688 A JP 26376688A JP 2719624 B2 JP2719624 B2 JP 2719624B2
Authority
JP
Japan
Prior art keywords
copper
carboxylic acid
group
organic carboxylic
azetidinone
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 - Lifetime
Application number
JP63263766A
Other languages
Japanese (ja)
Other versions
JPH03163057A (en
Inventor
正路 石黒
裕光 岩田
隆 中塚
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.)
Nippon Soda Co Ltd
Suntory Ltd
Original Assignee
Nippon Soda Co Ltd
Suntory 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 Nippon Soda Co Ltd, Suntory Ltd filed Critical Nippon Soda Co Ltd
Priority to JP63263766A priority Critical patent/JP2719624B2/en
Priority to CA002000565A priority patent/CA2000565C/en
Priority to US07/421,331 priority patent/US5026844A/en
Priority to KR1019890014686A priority patent/KR0133930B1/en
Priority to FI894917A priority patent/FI91253C/en
Priority to EP89310730A priority patent/EP0372699B1/en
Priority to DK516889A priority patent/DK171380B1/en
Priority to AT89310730T priority patent/ATE118765T1/en
Priority to DE68921306T priority patent/DE68921306T2/en
Priority to NO894157A priority patent/NO176399C/en
Priority to ES89310730T priority patent/ES2070912T3/en
Priority to AU43538/89A priority patent/AU617884B2/en
Publication of JPH03163057A publication Critical patent/JPH03163057A/en
Application granted granted Critical
Publication of JP2719624B2 publication Critical patent/JP2719624B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Description

【発明の詳細な説明】 (産業上の利用分野) 本発明はペネムまたはカルバペネム化合物の合成中間
体として有用な4−アシロキシ−2−アゼチジノン誘導
体の新規な製造法に関する。
Description: TECHNICAL FIELD The present invention relates to a novel process for producing a 4-acyloxy-2-azetidinone derivative useful as a synthetic intermediate for penem or carbapenem compounds.

(従来の技術) 3−(1′−(R)−ヒドロキシエチル)−4−アシ
ルオキシアゼチジノン及びその水酸基あるいはβ−ラク
タムNH基が各種保護基で保護された化合物はペネムある
いはカルバペネムの優れた合成中間体として用いられ、
各種の合成法が報告されている(N.Ueyamaら,特開昭62
−84057;M.Shiozakiら,Tetrahedron Lett.,22,5205(19
81))。
(Prior Art) 3- (1 '-(R) -Hydroxyethyl) -4-acyloxyazetidinone and its compound in which a hydroxyl group or a β-lactam NH group is protected with various protecting groups are excellent syntheses of penem or carbapenem. Used as an intermediate,
Various synthetic methods have been reported (N. Ueyama et al.,
−84057; M. Shiozaki et al., Tetrahedron Lett., 22 , 5205 (19
81)).

また一方で、3−(1′−(R)−ヒドロキシエチ
ル)−4−アリールチオアゼチジノン誘導体の合成法が
報告されている(M.Ishiguroら,特開昭61−207373;S.G
erardら,特開昭61−97260;M.Shibazakiら,特開昭59−
44355)。しかし、このアリールチオ誘導体は、4−ア
シロキシ体または、4−アリールスルホンへ変換して次
の工程に用いるのが一般的であり、特に、反応性の高い
アシロキシ基への変換が好ましい。そして、この変換法
については水銀塩を用いる方法が報告されている(A.Yo
shidaら,Chem.Pham.Bull.29,2899)。
On the other hand, a method for synthesizing a 3- (1 '-(R) -hydroxyethyl) -4-arylthioazetidinone derivative has been reported (M. Ishiguro et al., JP-A-61-207373; SG).
Erard et al., JP-A-61-97260; M. Shibazaki et al., JP-A-59-97260.
44355). However, this arylthio derivative is generally converted to a 4-acyloxy compound or 4-arylsulfone and used in the next step, and particularly, conversion to a highly reactive acyloxy group is preferred. As for this conversion method, a method using a mercury salt has been reported (A. Yo
Shida et al., Chem. Pham. Bull. 29 , 2899).

(発明の解決しようとする課題) しかしながら、水銀塩を用いる上記の方法は水銀塩の
毒性から考えて工業的製造には適せず、他のより毒性の
より少い試薬を用いる変換法が強く望まれている。
(Problems to be Solved by the Invention) However, the above method using a mercury salt is not suitable for industrial production in view of the toxicity of the mercury salt, and a conversion method using other less toxic reagents is strongly used. Is desired.

(課題を解決するための手段) 本発明者らは3−(1′−(R)−ヒドロキシエチ
ル)−4−アリールチオアゼチジノンをより利用価値の
高い3−(1′−(R)−ヒドロキシエチル)−4−ア
シロキシアゼチジノンに水銀塩を用いることなく変換す
る方法について研究を重ね本発明に到達した。
(Means for Solving the Problems) The present inventors converted 3- (1 '-(R) -hydroxyethyl) -4-arylthioazetidinone to 3- (1'-(R)-having a higher utility value. Research has been made on a method for converting (hydroxyethyl) -4-acyloxyazetidinone without using a mercury salt, and the present invention has been reached.

本発明は、一般式 (式中、ORは保護された水酸基、Xはアルキル基また
は芳香族基を表わす)を有する2−アゼチジノン誘導体
を銅化合物と反応させ、その反応混合物中にはアシル基
供給源として遊離型もしくは塩型の有機カルボン酸を含
有させることを特徴とする一般式 (式中、ORは前記と同義、Yはアシル基を表わす)で
示される4−アシロキシ−2−アゼチジノン誘導体の製
造法である。
The present invention has the general formula (Where OR represents a protected hydroxyl group, X represents an alkyl group or an aromatic group), and a 2-azetidinone derivative having a copper compound is reacted with the copper compound. General formula characterized by containing an organic carboxylic acid of the type (Wherein OR is as defined above, and Y represents an acyl group). A process for producing a 4-acyloxy-2-azetidinone derivative represented by the formula:

前記一般式中、Xで表わされるアルキル基または芳香
族基は本発明の反応により隣接するSと共に離脱するも
のであるから反応を妨げない限りいずれでもよいが、入
手容易性やコストから見て好ましいのは、メチル、エチ
ル、プロピルまたはブチル基のようなC1〜C4の低級アル
キル基、およびフェニル基、C1〜C4アルキル基を持つア
ルキルフェニルもしくはアルコキシフェニル基、ハロフ
ェニル基のような芳香族基である。
In the above general formula, the alkyl group or the aromatic group represented by X is eliminated with the adjacent S by the reaction of the present invention, and may be any as long as the reaction is not hindered. However, it is preferable in view of availability and cost. is given to methyl, ethyl, propyl or a lower alkyl group of C 1 -C 4, such as butyl and phenyl groups, alkylphenyl or alkoxyphenyl group having C 1 -C 4 alkyl group, aromatic such as a halophenyl group Group.

ORで表わされる保護された水酸基としては、tert−ブ
チルジメチルシリルオキシ基、tert−ブチルジフェニル
シリルオキシ基、ジメチルクミルシリルオキシ、トリイ
ソプロピルシリルオキシ、ジメチルテキシルシリルオキ
シ、p−ニトロベンジルオキシカルボニルオキシ基、p
−メトキシベンジルオキシカルボニルオキシ基などが例
示されうる。
Examples of the protected hydroxyl group represented by OR include tert-butyldimethylsilyloxy group, tert-butyldiphenylsilyloxy group, dimethylcumylsilyloxy, triisopropylsilyloxy, dimethyltexylsilyloxy, and p-nitrobenzyloxycarbonyl Oxy group, p
-Methoxybenzyloxycarbonyloxy group and the like.

Yで表わされるアシル基は反応混合物中に包含させる
遊離型または塩型の有機カルボン酸に由来し、その例と
しては、アセチル、クロロアセチル、トリクロロアセチ
ル、フルオロアセチル、トリフルオロアセチル、プロピ
オニル、ベンゾイル、ハロベンゾイル、メトキシベンゾ
イル基などが挙げられる。
The acyl group represented by Y is derived from a free or salt type organic carboxylic acid included in the reaction mixture, and examples thereof include acetyl, chloroacetyl, trichloroacetyl, fluoroacetyl, trifluoroacetyl, propionyl, benzoyl, Examples include halobenzoyl and methoxybenzoyl groups.

銅化合物としては、たとえば、酸化銅や有機カルボン
酸の銅塩が挙げられる。好ましい有機カルボン酸の銅塩
は、たとえば酢酸第2銅、プロピオン酸銅、酪酸銅のよ
うな脂肪族カルボン酸銅塩、または安息香酸銅のような
芳香族カルボン酸銅塩である。
Examples of the copper compound include copper oxide and copper salts of organic carboxylic acids. Preferred copper salts of organic carboxylic acids are, for example, aliphatic carboxylic acid copper salts such as cupric acetate, copper propionate, copper butyrate, or aromatic carboxylic acid copper salts such as copper benzoate.

アシル基供給源としては有機カルボン酸またはその塩
が用いられ、その例としては、酢酸、クロロ酢酸、トリ
クロロ酢酸、フルオロ酢酸、トリフルオロ酢酸、プロピ
オン酸、酪酸のような脂肪族カルボン酸、安息香酸のよ
うな芳香族カルボン酸、またはそれらのカルボン酸のナ
トリウム、カリウムもしくはアンモニウム塩のような塩
を挙げることができる。
As the acyl group source, an organic carboxylic acid or a salt thereof is used. Examples thereof include acetic acid, chloroacetic acid, trichloroacetic acid, fluoroacetic acid, trifluoroacetic acid, propionic acid, aliphatic carboxylic acids such as butyric acid, and benzoic acid. And salts such as sodium, potassium or ammonium salts of those carboxylic acids.

銅化合物が有機カルボン酸の銅塩である場合、それに
アシル基供給源としての役割を兼ねさせることもでき
る。
When the copper compound is a copper salt of an organic carboxylic acid, it can also serve as a source of an acyl group.

本発明の方法においては、化合物(I)を銅化合物と
反応させ、その反応混合物中にはアシル基供給源として
脂肪族または芳香族カルボン酸を遊離酸もしくは塩の形
態で含有させる。
In the method of the present invention, the compound (I) is reacted with a copper compound, and the reaction mixture contains an aliphatic or aromatic carboxylic acid as a source of an acyl group in the form of a free acid or salt.

酢酸のような脂肪族カルボン酸または安息香酸のよう
な芳香族カルボン酸を溶媒として化合物(I)と銅化合
物を反応させることにより、溶媒をアシル基供給源とす
ることができる。
By reacting the compound (I) with a copper compound using an aliphatic carboxylic acid such as acetic acid or an aromatic carboxylic acid such as benzoic acid as a solvent, the solvent can be used as an acyl group source.

また、前記のように銅化合物自体をアシル基供給源と
することもできる。
Further, as described above, the copper compound itself can be used as an acyl group supply source.

所望により、有機カルボン酸溶媒中で化合物(I)を
有機カルボン酸銅塩と反応させてもよい。
If desired, compound (I) may be reacted with an organic carboxylic acid copper salt in an organic carboxylic acid solvent.

また、所望により銅塩以外の有機カルボン酸塩を反応
混合物中に含有させてもよい。
If desired, an organic carboxylate other than a copper salt may be contained in the reaction mixture.

有機カルボン酸以外の反応溶媒としては、たとえば、
ジメチルホルムアミド、ジメチルアセトアミド、ジメチ
ルスルホキシドなどが挙げられる。
As a reaction solvent other than the organic carboxylic acid, for example,
Examples include dimethylformamide, dimethylacetamide, dimethylsulfoxide and the like.

反応に用いる銅化合物の量は、化合物(I)1モルに
対して、2価の銅塩の場合、0.5当量以上が好ましく、
さらに好ましくは0.55〜0.65当量である。
In the case of a divalent copper salt, the amount of the copper compound used in the reaction is preferably 0.5 equivalent or more based on 1 mol of the compound (I),
More preferably, it is 0.55 to 0.65 equivalent.

反応は通常60℃以上、好ましくは60〜120℃で進行さ
せることができる。
The reaction can be usually carried out at 60 ° C or higher, preferably at 60 to 120 ° C.

反応終了後、析出する不溶物を別し、液を有機溶
媒、たとえば、エチルエーテル、酢酸エチル、クロロホ
ルムなどで希釈したのち、希釈液を必要に応じて重曹水
のようなアルカリで洗浄して過剰の酸性を除き、有機層
を濃縮すると化合物(II)を含む結晶を得ることができ
る。それはカラムクロマトグラフィ、分取薄層クロマト
グラフィ、再結晶などの手段で精製することができる。
After completion of the reaction, insoluble substances precipitated are separated, and the liquid is diluted with an organic solvent, for example, ethyl ether, ethyl acetate, chloroform or the like. By removing the acidity of the above and concentrating the organic layer, crystals containing the compound (II) can be obtained. It can be purified by means such as column chromatography, preparative thin-layer chromatography, recrystallization and the like.

以下実施例の形で本発明をさらに説明するが、本発明
はこれらの実施例によって限定されるものではない。
Hereinafter, the present invention will be further described in the form of examples, but the present invention is not limited to these examples.

実施例1 (1′R,3S,4R)−3−(1′−tert−ブチルジメチ
ルシリルオキシ)エチル−4−メチルチオ−2−アゼチ
ジノン(74mg)及び酢酸第2銅一水和物(30mg)の酢酸
(0.5ml)混合物を120℃で30分加熱・撹拌した後、エー
テルで希釈し、不溶物を別する。有機層を、飽和炭酸
水素ナトリウム,水で洗滌し乾燥後、濃縮すると、46mg
の標題化合物を含む白色結晶を得た。
Example 1 (1′R, 3S, 4R) -3- (1′-tert-butyldimethylsilyloxy) ethyl-4-methylthio-2-azetidinone (74 mg) and cupric acetate monohydrate (30 mg) in acetic acid ( 0.5ml) The mixture is heated and stirred at 120 ° C for 30 minutes, and then diluted with ether to separate insolubles. The organic layer was washed with saturated sodium bicarbonate and water, dried, and concentrated to give 46 mg.
White crystals containing the title compound were obtained.

実施例2 (1′R,3R,4R)−3−(1′−tert−ブチルジメチ
ルシリルオキシ)エチル−4−アセトキシ−2−アゼチ
ジノン (1′R,3S,4R)−3−(1′−tert−ブチルジメチ
ルシリルオキシ)エチル−4−フェニルチオ−2−アゼ
チジノン(337mg,1mmol)及び酢酸第2銅(102mg,0.5mm
ol)の酢酸(2ml)の混合物を100℃で45分間加熱する。
エーテルで希釈し、不溶物をロ別した後、飽和炭酸水素
ナトリウム,水で洗滌し、乾燥後濃縮し、残渣をシリカ
ゲルカラムクロマトグラフィーにて精製すると、標題化
合物247mgを得た。
Example 2 (1'R, 3R, 4R) -3- (1'-tert-butyldimethylsilyloxy) ethyl-4-acetoxy-2-azetidinone (1′R, 3S, 4R) -3- (1′-tert-butyldimethylsilyloxy) ethyl-4-phenylthio-2-azetidinone (337 mg, 1 mmol) and cupric acetate (102 mg, 0.5 mm
ol) of acetic acid (2 ml) is heated at 100 ° C. for 45 minutes.
After diluting with ether and filtering off insolubles, the residue was washed with saturated sodium bicarbonate and water, dried and concentrated, and the residue was purified by silica gel column chromatography to obtain 247 mg of the title compound.

実施例3 (1′R,3R,4R)−3−(1′−tert−ブチルジメチ
ルシリルオキシ)エチル−4−ベンゾイルオキシ−2−
アゼチジノン (1′R,3S,4R)−3−(1′−tert−ブチルジメチ
ルシリルオキシ)エチル−4−フェニルチオ−2−アゼ
チジノン(337mg)及び安息香酸銅(1mmol)、DMF(2m
l)混合物に、安息香酸(244mg)を加え、70℃にて30分
間加熱する。エーテルを加え、不溶物を別した後、飽
和炭酸水素ナトリウム,水で洗滌し、シリカゲルカラム
クロマトグラフィー(ヘキサン:酢酸エチル=3:1)に
て精製すると、60mgの標題化合物を得た。
Example 3 (1'R, 3R, 4R) -3- (1'-tert-butyldimethylsilyloxy) ethyl-4-benzoyloxy-2-
Azetidinone (1′R, 3S, 4R) -3- (1′-tert-butyldimethylsilyloxy) ethyl-4-phenylthio-2-azetidinone (337 mg) and copper benzoate (1 mmol), DMF (2 m
l) Add benzoic acid (244 mg) to the mixture and heat at 70 ° C. for 30 minutes. Ether was added thereto, and the insolubles were separated, washed with saturated sodium hydrogen carbonate and water, and purified by silica gel column chromatography (hexane: ethyl acetate = 3: 1) to obtain 60 mg of the title compound.

実施例4 (1′R,3S,4R)−3−(1′−tert−ブチルジメチ
ルシリルオキシ)エチル−4−p−メチルフェニルチオ
−2−アゼチジノン(351mg)及び酢酸第2銅一水和物
(100mg)の酢酸(2ml)混合物を110℃で25分間加熱撹
拌する。エーテルで希釈し、不溶物を別した物、飽和
炭酸水素ナトリウム,水で洗滌し乾燥後、濃縮すると、
標題化合物223mgを含む白色結晶を得た。
Example 4 (1′R, 3S, 4R) -3- (1′-tert-butyldimethylsilyloxy) ethyl-4-p-methylphenylthio-2-azetidinone (351 mg) and cupric acetate monohydrate (100 mg) ) (2 ml) was heated and stirred at 110 ° C. for 25 minutes. Diluted with ether, separated insolubles, washed with saturated sodium bicarbonate, water, dried and concentrated.
White crystals containing 223 mg of the title compound were obtained.

実施例5 (1′R,3S,4R)−3−(1′−tert−ブチルジメチ
ルシリルオキシ)エチル−4−o−メトキシフェニルチ
オ−2−アゼチジノン(367mg)及び酢酸第2銅−水和
物(100mg)の酢酸(2ml)混合物を110℃で5分間加熱
する。エーテルで希釈し、不溶物を別した後、飽和炭
酸水素ナトリウム,水で洗滌し、乾燥後濃縮すると、標
題化合物214mgを含む白色結晶を得た。
Example 5 (1′R, 3S, 4R) -3- (1′-tert-butyldimethylsilyloxy) ethyl-4-o-methoxyphenylthio-2-azetidinone (367 mg) and cupric acetate-hydrate (100 mg) ) (2 ml) is heated at 110 ° C. for 5 minutes. After diluting with ether and separating insolubles, the extract was washed with saturated sodium hydrogen carbonate and water, dried and concentrated to obtain white crystals containing 214 mg of the title compound.

実施例6 (1′R,3S,4R)−3−(1′−tert−ブチルジメチ
ルシリルオキシ)エチル−4−アセトキシ−2−アゼチ
ジノンの合成 (1′R,3S,4R)−3−(1′−tert−ブチルジメチ
ルシリルオキシ)エチル−4−p−クロロフェニルチオ
−2−アゼチジノン(372mg)及び酢酸第2銅一水和物
(100mg)の酢酸(2ml)混合物を110℃にて25分間加
熱,撹拌する。冷却後、エーテルで希釈し不溶物を別
した後、飽和炭酸水素ナトリウム,水で洗滌し乾燥後、
濃縮すると、標題化合物200mgを含む白色結晶を得た。
Example 6 Synthesis of (1'R, 3S, 4R) -3- (1'-tert-butyldimethylsilyloxy) ethyl-4-acetoxy-2-azetidinone (1′R, 3S, 4R) -3- (1′-tert-butyldimethylsilyloxy) ethyl-4-p-chlorophenylthio-2-azetidinone (372 mg) and cupric acetate monohydrate (100 mg) A mixture of acetic acid (2 ml) is heated and stirred at 110 ° C. for 25 minutes. After cooling, dilute with ether to separate insolubles, wash with saturated sodium bicarbonate and water, dry,
Concentration gave white crystals containing 200 mg of the title compound.

NMR,(CDCl3,TMS,270MHz) 0.61(s,3H),0.076(s,3H),0.867(s,9H),1.25(3
H,d,6.6Hz),2.108(s,3H),3.18(d,1H,3.4Hz),4.18
−4.26(m,1H),5.84(m,1S),6.7(br.S,1H) 参考例 (1′R,3R,4R)−3−(1′−tert−ブチルジメチ
ルシリルオキシ)エチル−4−アセトキシ−2−アゼチ
ジノン (1′R,3S,4R)−3−(1′−tert−ブチルジメチ
ルシリルオキシ)エチル−4−フェニルチオ−2−アゼ
チジノン(337mg,1mmol)及び酢酸第2水銀(223mg,0.7
mmol)の酢酸混合物(2ml)を室温にて10分撹拌する。
エーテルで希釈し、不溶物を別した後、飽和炭酸水素
ナトリウム、5%硫化ナトリウム水溶液、水で洗滌し、
無水硫酸ナトリウムで乾燥後、濃縮する。残渣をシリカ
ゲルカラムクロマトグラフィーで精製すると、標題化合
物287mgを得た。
NMR, (CDCl 3 , TMS, 270 MHz) 0.61 (s, 3H), 0.076 (s, 3H), 0.867 (s, 9H), 1.25 (3
H, d, 6.6Hz), 2.108 (s, 3H), 3.18 (d, 1H, 3.4Hz), 4.18
-4.26 (m, 1H), 5.84 (m, 1S), 6.7 (br.S, 1H) Reference Example (1'R, 3R, 4R) -3- (1'-tert-butyldimethylsilyloxy) ethyl- 4-acetoxy-2-azetidinone (1′R, 3S, 4R) -3- (1′-tert-butyldimethylsilyloxy) ethyl-4-phenylthio-2-azetidinone (337 mg, 1 mmol) and mercuric acetate (223 mg, 0.7 mmol)
acetic acid mixture (2 ml) is stirred at room temperature for 10 minutes.
After diluting with ether and separating the insoluble matter, the extract was washed with saturated sodium bicarbonate, 5% aqueous sodium sulfide solution and water,
After drying over anhydrous sodium sulfate, the mixture is concentrated. The residue was purified by silica gel column chromatography to give 287 mg of the title compound.

(発明の効果) 本発明によれば、環境汚染の原因となる水銀塩を全く
用いることなく、3−(1′−(R)−ヒドロキシエチ
ル)−4−アルキル(もしくはアリール)チオアゼチジ
ノンを3−(1′−(R)−ヒドロキシエチル)−4−
アシルオキシアゼチジノンに効率良く交換することがで
きる。
(Effects of the Invention) According to the present invention, 3- (1 '-(R) -hydroxyethyl) -4-alkyl (or aryl) thioazetidinone is converted to 3- (1'-(R) -hydroxyethyl) -4-alkyl (or aryl) without using a mercury salt which causes environmental pollution. (1 ′-(R) -hydroxyethyl) -4-
It can be efficiently exchanged for acyloxyazetidinone.

───────────────────────────────────────────────────── フロントページの続き (72)発明者 中塚 隆 大阪府三島郡島本町若山台1丁目1番1 号 サントリー株式会社生物医学研究所 内 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Takashi Nakatsuka 1-1-1 Wakayamadai, Shimamoto-cho, Mishima-gun, Osaka Pref.

Claims (6)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】一般式 (式中、ORは保護された水酸基、Xはアルキル基または
芳香族基を表わす)を有する2−アゼチジノン誘導体を
銅化合物と反応させ、その反応混合物中にはアシル基供
給源として遊離型もしくは塩型の有機カルボン酸を含有
させることを特徴とする一般式 (式中、ORは前記と同義、Yはアシル基を表わす)で示
される4−アシロキシ−2−アゼチジノン誘導体の製造
法。
(1) General formula (Where OR represents a protected hydroxyl group, X represents an alkyl group or an aromatic group), and a 2-azetidinone derivative having a copper compound is reacted with the copper compound. General formula characterized by containing an organic carboxylic acid of the type (Wherein OR is as defined above, and Y represents an acyl group). A process for producing a 4-acyloxy-2-azetidinone derivative represented by the formula:
【請求項2】2−アゼチジノン誘導体が光学活性であ
り、得られる4−アシロキシ−2−アゼチジノン誘導体
が相当する光学活性体である請求項1記載の製造法。
2. The process according to claim 1, wherein the 2-azetidinone derivative is optically active, and the obtained 4-acyloxy-2-azetidinone derivative is a corresponding optically active form.
【請求項3】有機カルボン酸が脂肪族もしくは芳香族カ
ルボン酸である請求項1または2記載の製造法。
3. The method according to claim 1, wherein the organic carboxylic acid is an aliphatic or aromatic carboxylic acid.
【請求項4】有機カルボン酸銅塩が銅化合物とアシル基
供給源を兼ねる請求項1記載の製造法。
4. The method according to claim 1, wherein the organic carboxylic acid copper salt also serves as a copper compound and a source of an acyl group.
【請求項5】有機カルボン酸銅塩が脂肪族もしくは芳香
族カルボン酸の銅塩である請求項4記載の製造法。
5. The method according to claim 4, wherein the organic carboxylic acid copper salt is a copper salt of an aliphatic or aromatic carboxylic acid.
【請求項6】有機カルボン酸銅塩が酢酸第2銅、プロピ
オン酸銅、酪酸銅もしくは安息香酸銅である請求項4記
載の製造法。
6. The process according to claim 4, wherein the copper salt of the organic carboxylic acid is cupric acetate, copper propionate, copper butyrate or copper benzoate.
JP63263766A 1988-10-19 1988-10-19 Method for producing 4-acyloxy-2-azetidinone derivative Expired - Lifetime JP2719624B2 (en)

Priority Applications (12)

Application Number Priority Date Filing Date Title
JP63263766A JP2719624B2 (en) 1988-10-19 1988-10-19 Method for producing 4-acyloxy-2-azetidinone derivative
CA002000565A CA2000565C (en) 1988-10-19 1989-10-12 Process for the preparation of 4-acyloxy-2-azetidinone derivatives
US07/421,331 US5026844A (en) 1988-10-19 1989-10-13 Process for the preparation of 4-acyloxy-2-azetidinone derivatives
KR1019890014686A KR0133930B1 (en) 1988-10-19 1989-10-13 Process for the preparation of 4-acyloxy-2-azetidinon
FI894917A FI91253C (en) 1988-10-19 1989-10-17 Process for the preparation of 4-acyloxy-2-azetidinone derivatives
DK516889A DK171380B1 (en) 1988-10-19 1989-10-18 Process for the preparation of 4-acyloxy-2-azetidinone derivatives
EP89310730A EP0372699B1 (en) 1988-10-19 1989-10-18 Process for the preparation of 4-acyloxy-2-azetidinone derivatives
AT89310730T ATE118765T1 (en) 1988-10-19 1989-10-18 METHOD FOR PRODUCING 4-ACYLOXY-2-AZETIDINONE DERIVATIVES.
DE68921306T DE68921306T2 (en) 1988-10-19 1989-10-18 Process for the preparation of 4-acyloxy-2-azetidinone derivatives.
NO894157A NO176399C (en) 1988-10-19 1989-10-18 Process for the preparation of 4-acyloxy-2-azetidinone derivatives
ES89310730T ES2070912T3 (en) 1988-10-19 1989-10-18 PROCEDURE FOR THE PREPARATION OF 4-ACILOXI-2-AZETIDINONE DERIVATIVES.
AU43538/89A AU617884B2 (en) 1988-10-19 1989-10-19 Process for the preparation of 4-acyloxy-2-azetidinone derivatives

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63263766A JP2719624B2 (en) 1988-10-19 1988-10-19 Method for producing 4-acyloxy-2-azetidinone derivative

Publications (2)

Publication Number Publication Date
JPH03163057A JPH03163057A (en) 1991-07-15
JP2719624B2 true JP2719624B2 (en) 1998-02-25

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Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Link
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Also Published As

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