醚化物 | 66340-86-1

• 分子结构分类: 有机化合物 - 有机酸及其衍生物 - 酮酸及其衍生物
• 中文名称: 醚化物
• 英文名称: ethyl 3-oxo-2-syn-methoxyiminobutyrate
• 英文别名: ethyl (Z)-2-methoxyimino-3-oxobutanoate；ethyl 2-methoxyimino-3-oxobutanoate；ethyl 2-acetyl-2-methoxyiminoacetate；ethyl 2-methoxyimino-3-oxo-butyrate；ethyl 3-oxo-2-methoxyiminobutyrate；ethyl α-methoxyimino-β-oxobutyrate；Ethyl (2E)-2-(methoxyimino)-3-oxobutanoate；ethyl (2Z)-2-methoxyimino-3-oxobutanoate
• CAS: 66340-86-1
• 化学式: C₇H₁₁NO₄
• 分子量: 173.169
• InChiKey: HASOOENYFDJEAK-VURMDHGXSA-N

物化性质

• 沸点：
  218.0±23.0 °C(Predicted)
• 密度：
  1.11±0.1 g/cm3(Predicted)
• 溶解度：
  可溶于氯仿（少许）、甲醇（少许）

计算性质

• 辛醇/水分配系数(LogP)：
  0.8
• 重原子数：
  12
• 可旋转键数：
  5
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.57
• 拓扑面积：
  65
• 氢给体数：
  0
• 氢受体数：
  5

反应信息

• 作为反应物：
  描述：

  醚化物 生成 Ethyl-2-methoxyimino-4-chloroacetoacetat
  参考文献：
  名称：

  TAKAYA, TAKAO;MURATA, MASAYOSHI

  摘要：

  DOI：
• 作为产物：
  描述：

  ethyl 2-(hydroxyimino)-3-oxybutyrate 在 potassium carbonate 、 硫酸二甲酯 作用下， 以 二氯甲烷 、 水 、 丙酮 为溶剂， 生成 醚化物
  参考文献：
  名称：

  3-Acetoxymethyl-7-(iminoacetamido)-cephalosporanic acid derivatives

  摘要：

  式为##STR1##的化合物，其中R从氢和易于酸水解或氢解的基团中选择，R'从氢、1至4个碳原子的烷基、2至4个碳原子的烯基和炔基以及易于酸水解或氢解的基团中选择，A从氢、碱金属和碱土金属或镁的当量物以及有抗生素活性的有机胺基中选择，但当R'是易于酸水解或氢解的基团时，R也是如此；当R'是氢时，R也是氢；波浪线表示OR'基团可以处于两种可能的同构或反构位置之一，具有抗生素活性和其制备方法。

  公开号：

  US04152432A1

文献信息

• Alkoxyimino dioxy butyric acid derivatives
  申请人：Fujisawa Pharmaceutical Co., Ltd.

  公开号：US04298529A1

  公开（公告）日：1981-11-03

  The invention relates to new antimicrobially active 3-cephem compounds, processes for preparing such compounds, new intermediate compounds comprising alkoxyimino dioxy butyric acid derivatives useful in said processes, and processes for preparation of said intermediates.

  这项发明涉及新的具有抗微生物活性的3-头孢菌素化合物，用于制备这种化合物的过程，包括在所述过程中有用的烷氧基亚氧代丁酸衍生物的新中间体化合物，以及制备所述中间体的过程。
• 3-Vinyl-cephalosporins
  申请人：Rhone-Poulenc Industries

  公开号：US04307230A1

  公开（公告）日：1981-12-22

  Novel 3-vinyl-cephalosporins of the formula ##STR1## in which n is 0 or 1, R.sub.1 is hydrogen, a radical of the formula ##STR2## [in which R.sub.4 is hydrogen or a protective radical and R.sub.5 is hydrogen, alkyl, vinyl or cyanomethyl or is a protective radical], or a protective radical, and R.sub.2 is hydrogen, a protective radical or an enzymatically removable radical, or R.sub.1 is hydrogen or an acyl radical which may carry various substituents and R.sub.2 is hydrogen or a protective radical, and R.sub.3 is a radical of the general formula R'.sub.3 --SO.sub.2 --O-- or R".sub.3 --CO--O--, in which R'.sub.3 is alkyl, trifluoromethyl, trichloromethyl or phenyl which is substituted by a halogen atom or by an alkyl or nitro radical, and R".sub.3 is defined like R'.sub.3 or represents methyl which is substituted by acyl or alkoxycarbonyl, or represents ethyl or propyl substituted in the 2-position by acyl or alkoxycarbonyl. These compounds are useful as intermediates for the preparation of antibiotic 3-thiovinyl-cephalosporins.

  新型3-乙烯基头孢菌素化合物，其通式为##STR1##，其中n为0或1，R1为氢、通式##STR2##的基团[其中R4为氢或保护基团，R5为氢、烷基、乙烯基或氰甲基或为保护基团]，或为保护基团，R2为氢、保护基团或酶可去除的基团，或者R1为氢或可能带有各种取代基的酰基基团，R2为氢或保护基团，R3为一般通式R'3--SO2--O--或R''3--CO--O--的基团，其中R'3为烷基、三氟甲基、三氯甲基或被卤素原子或烷基、硝基取代的苯基，R''3定义同R'3或代表被酰基或烷氧羰基取代的甲基，或代表在2位被酰基或烷氧羰基取代的乙基或丙基。这些化合物作为制备抗生素3-硫代乙烯基头孢菌素的中间体具有应用价值。
• 3-Thiovinyl-cephalosporins
  申请人：Rhone-Poulenc Industries

  公开号：US04307116A1

  公开（公告）日：1981-12-22

  Novel cephalosporins of the general formula (I); ##STR1## in which R is alkyl, L-2-amino-2-carboxy-ethyl, phenyl, pyridyl, pyridyl-N-oxide, pyrimidin-2-yl, substituted pyridazin-3-yl, 5,6-dioxo-1,4,5,6-tetrahydro-1,2,4-triazin-3-yl substituted in the 4-position, 1,3,4-triazol-5-yl or 2-alkoxycarbonyl-1,3,4-triazol-5-yl substituted in the 1-position, 1,4-dialkyl-5,6-dioxo-1,4,5,6-tetrahydro-1,2,4-triazin-3-yl, 1-alkyl-5,6-dioxo-1,4,5,6-tetrahydro-1,2,4-triazin-3-yl, 2-alkyl-5,6-dioxo-1,2,5,6-tetrahydro-1,2,4-triazin-3-yl, triazol-5-yl, 1,3,4-thiadiazol-5-yl which is substituted or unsubstituted, 1,2,4-thiadiazol-5-yl which is substituted, 1,3,4-oxadiazol-5-yl which is substituted or unsubstituted, oxazol-2-yl which is substituted or unsubstituted or tetrazol-5-yl which is substituted or unsubstituted in the 1-position, R' is a hydrogen atom or a radical of the general formula (II); ##STR2## and R.sup.o is hydrogen, alkyl, vinyl or cyanomethyl, as well as their salts, are useful as anti-bacterial agents.

  新型头孢菌素类化合物，其通式为(I)；##STR1##其中R为烷基、L-2-氨基-2-羧基乙基、苯基、吡啶基、吡啶基-N-氧化物、嘧啶-2-基、取代的吡啶-3-基、4-位取代的5,6-二氧代-1,4,5,6-四氢-1,2,4-三嗪-3-基、1,3,4-三唑-5-基或1-位取代的2-烷氧羰基-1,3,4-三唑-5-基、1,4-二烷基-5,6-二氧代-1,4,5,6-四氢-1,2,4-三嗪-3-基、1-烷基-5,6-二氧代-1,4,5,6-四氢-1,2,4-三嗪-3-基、2-烷基-5,6-二氧代-1,2,5,6-四氢-1,2,4-三嗪-3-基、三唑-5-基、取代或未取代的1,3,4-噻二唑-5-基、取代的1,2,4-噻二唑-5-基、取代或未取代的1,3,4-噁二唑-5-基、取代或未取代的噁唑-2-基或1-位取代或未取代的四唑-5-基，R'为氢原子或通式(II)的基团；##STR2##且R.sup.o为氢、烷基、乙烯基或氰甲基，以及它们的盐，可用作抗菌剂。
• Thiazolylacetamido cephalosporin type compounds
  申请人：Takeda Chemical Industries, Ltd.

  公开号：US04098888A1

  公开（公告）日：1978-07-04

  Novel cephem compounds of the formula; ##STR1## wherein R.sup.1 represents amino or hydroxyl group which may be protected, R.sup.2 represents amino or hydroxyl group or a group convertible into these groups, R.sup.3 represents hydrogen or methoxy group or a group convertible into methoxy group, R.sup.4 represents hydrogen or a residue of a nucleophilic compound and R.sup.8 represents hydrogen or a halogen, or a pharmaceutically acceptable salt or ester thereof, have strong antibiotic properties against a wide variety of microorganisms including gram-positive bacteria as well as gram-negative ones, especially by oral administration and can be used as therapeutic agent for various bacterial infections of animals including human beings.

  新型头孢菌素化合物的化学式如下；##STR1## 其中R.sup.1代表氨基或羟基，可以被保护，R.sup.2代表氨基或羟基或可转化为这些基团的基团，R.sup.3代表氢或甲氧基或可转化为甲氧基的基团，R.sup.4代表氢或亲核化合物的残基，R.sup.8代表氢或卤素，或其药用可接受的盐或酯，具有强大的抗生素特性，对包括革兰氏阳性细菌和革兰氏阴性细菌在内的各种微生物具有抗性，特别是经口服给药，可用作动物包括人类的各种细菌感染的治疗剂。
• 7-[2-(2-Aminothiazol-4-yl)-2-(syn)-methoxyiminoacetamido] cephalosporins
  申请人：Takeda Chemical Industries, Ltd.

  公开号：US04278671A1

  公开（公告）日：1981-07-14

  A 7-[2-(2-aminothiazol-4-yl)-2-(syn)-methoxyiminoacetamido] cephalosporin derivative of the formula; ##STR1## wherein R.sub.3 is hydrogen or a residue of a nucleophilic compound; R.sub.2 NH is an amino group which may optionally be protected, pharmaceutically acceptable salt or ester thereof, is found to have excellent anti-bacterial activity against a broad spectrum of bacteria inclusive of gram-negative bacteria such as Escherichia coli, Serratia marcescens, Proteus rettgeri, Enterobacter cloacae and Citrobacter freundii. Thus, this compound may be used for an antibacterial agent in therapeutical purposes.

  一种7-[2-(2-氨基噻唑-4-基)-2-(syn)-甲氧基亚硝基乙酰胺基]头孢菌素衍生物的化学式如下：##STR1##其中R.sub.3为氢或亲核化合物的残基；R.sub.2 NH为可能被保护的氨基团，其药用盐或酯，发现对包括大肠杆菌、马尔色菌、雷特格氏变形杆菌、克雷伯氏菌和弗伦德氏细菌在内的广谱细菌具有出色的抗菌活性。因此，该化合物可用作治疗目的中的抗菌剂。