p-methoxybenzyl 7-amino-3-chloromethyl-3-cephem-4-carboxylate | 106773-36-8

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: p-methoxybenzyl 7-amino-3-chloromethyl-3-cephem-4-carboxylate
• 英文别名: p-methoxy benzyl 7β-amino-3-chloromethyl-3-cephem-4-carboxylate；(4-methoxyphenyl)methyl (6R,7R)-7-amino-3-(chloromethyl)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate
• CAS: 106773-36-8
• 化学式: C₁₆H₁₇ClN₂O₄S
• 分子量: 368.841
• InChiKey: PBKFYMCZYNFVIA-IUODEOHRSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  0.9
• 重原子数：
  24
• 可旋转键数：
  6
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.38
• 拓扑面积：
  107
• 氢给体数：
  1
• 氢受体数：
  6

反应信息

• 作为反应物：
  描述：

  p-methoxybenzyl 7-amino-3-chloromethyl-3-cephem-4-carboxylate 在 palladium on activated charcoal jones reagent 、 potassium trimethylsilonate 、 氢气 、 溶剂黄146 、 三乙胺 、 N-三甲基硅基乙酰胺 、 sodium iodide 作用下， 以 四氢呋喃 、 甲醇 、 二氯甲烷 、 氯仿 、 丙酮 、 乙腈 、 丁酮 为溶剂， 反应 11.5h， 生成 (4-methoxyphenyl)methyl (6R,7R)-3-[(3S)-3-[[(4R)-4-acetamido-5-[(2-methylpropan-2-yl)oxy]-5-oxopentanoyl]amino]-4-[[(2R)-1-[[(2R)-1-[(2-methylpropan-2-yl)oxy]-1-oxopropan-2-yl]amino]-1-oxopropan-2-yl]amino]-4-oxobutyl]-7-[(2-methylpropan-2-yl)oxycarbonylamino]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate
  参考文献：
  名称：

  A Mechanism-Based Inhibitor Targeting the dd-Transpeptidase Activity of Bacterial Penicillin-Binding Proteins

  摘要：

  Penicillin-binding proteins (PBPs) are responsible for the final stages of bacterial cell wall assembly. These enzymes are targets of beta-lactam antibiotics. Two of the PBP activities include DD-transpeptidase and DD-carboxypeptidase activities, which carry out the cross-linking of the cell wall and trimming of the peptidoglycan, the major constituent of the cell wall, by an amino acid, respectively. The activity of the latter enzyme moderates the degree of cross-linking of the cell wall, which is carried out by the former. Both these enzymes go through an acyl-enzyme species in the course of their catalytic events. Compound 6, a cephalosporin derivative incorporated with structural features of the peptidoglycan was conceived as an inhibitor specific for DD-transpeptidases. On acylation of the active sites of DD-transpeptidases, the molecule would organize itself in the two active site subsites such that it mimics the two sequestered strands of the bacterial peptidoglycan en route to their cross-linking. Hence, compound 6 is the first inhibitor conceived and designed specifically for inhibition of DD-transpeptidases. The compound was synthesized in 13 steps and was tested with recombinant PBP1b and PBP5 of Escherichia coli, a DD-transpeptidase and a DD-carboxypeptidase, respectively. Compound 6 was a time-dependent and irreversible inhibitor of PBP1b. On the other hand, compound 6 did not interact with PBP5, neither as an inhibitor (reversible or irreversible) nor as a substrate.

  DOI：

  10.1021/ja038445l
• 作为产物：
  描述：

  7-苯乙酰氨基-3-氯甲基-4-头孢烷酸对甲氧基苄酯 在 吡啶 、 五氯化磷 作用下， 以 二氯甲烷 为溶剂， 反应 2.0h， 生成 p-methoxybenzyl 7-amino-3-chloromethyl-3-cephem-4-carboxylate
  参考文献：
  名称：

  Cephalosporin compound

  摘要：

  公开了化学式（I）的头孢菌素化合物，该化合物对革兰氏阴性（如铜绿假单胞菌）和革兰氏阳性（如耐甲氧西林金黄色葡萄球菌）细菌具有抗生素活性。还公开了制备化合物（I）的方法，以及在制备药物组合物和抗菌应用中使用该化合物的方法。

  公开号：

  US08809314B1

文献信息

• Cephalosporins, processes for their preparation and pharmaceutical compositions containing them
  申请人：BEECHAM GROUP PLC

  公开号：EP0265185A3

  公开（公告）日：1990-03-28

  Antibacterial agents have the formula (Ia) or are pharmaceutically acceptable salts or invivo hydrolysable esters thereof: wherein R¹ is an acyl group, in particular that of an antibacterially active cephalosporin; R² is hydrogen, methoxy, or formamido; Y is S, SO, SO₂, O or CH₂; X is oxygen, sulphur, or -NH- and R⁴ is a group of the formula CO Z R⁵ wherein Z is -CH=CH-, -(CH₂)n- or -NH-; n is 0, 1 or 2; and R⁵ is: wherein R⁶ and R⁷ are the same or different, each representing hydroxy or protected hydroxy and R⁸ is hydroxy, amino, halogen or carboxy.The use of the compounds of formula (Ia) and intermediates for their preparation are also disclosed.

  抗菌剂的化学式为（Ia），或者是其药用可接受的盐或体内水解酯： 其中R¹是酰基，特别是抗菌活性头孢菌素的酰基；R²是氢、甲氧基或甲酰胺基；Y是S、SO、SO₂、O或CH₂；X是氧、硫或-NH-，R⁴是化学式CO Z R⁵的基团，其中Z是-CH=CH-、-(CH₂)n-或-NH-；n为0、1或2；R⁵是： 其中R⁶和R⁷相同或不同，分别代表羟基或保护羟基，R⁸是羟基、氨基、卤素或羧基。该化合物的使用和其制备的中间体也被披露。
• Studies on Anti-MRSA Parenteral Cephalosporins. III. Synthesis and Antibacterial Activity of 7.BETA.-[2-(5-Amino-1,2,4-thiadiazol-3-yl)-2(Z)-alkoxyiminoacetamido]-3-[(E)-2-(1-alkylimidazo[1,2-b]pyridazinium-6-yl)thiovinyl]-3-cephem-4-carboxylates and Related Compounds.
  作者：TOMOYASU ISHIKAWA、KEIJI KAMIYAMA、YUTAKA NAKAYAMA、YUJI IIZAWA、KENJI OKONOGI、AKIO MIYAKE

  DOI：10.7164/antibiotics.54.257

  日期：——

  In the course of our exploration for a novel cephalosporin derivative having excellent antibacterial activity against methicillin-resistant Staphylococcus aureus (MRSA), we modified the C-3 linked spacers of cephem derivatives bearing a l-methylimidazo[l, 2-b]pyridazinium-6-yl group at the C-3' position and 2-(5-amino-l, 2, 4-thiadiazol-3-yl)-2(Z)-cyclopentyloxyiminoacetyl group at the C-7 position. The optimal spacers were the (E)-2-vinyl and (E)-2-thiovinyl groups seen in 19a and 29aa, respectively. Their anti-MRSA activity was 16 to 32 times as potent as that of cefozopran (CZOP). Focusing on the (E)-2-vinyl and (E)-2-thiovinyl spacers, we further modified the alkoxyimino groups in the C-7 acyl moiety and the 1-alkylimidazo[l, 2-b]pyridazinium moieties at the C-3' position and investigated the structureactivity relationships (SAR) of the derivatives. Consequently, we selected 7β-[2-(5-aminol, 2, 4-thiadiazol-3-yl)-2(Z)-fluoromethoxyiminoacetamido]-3-[(E)-2-(l-methylimidazo[l, 2-b]pyridazinium-6-yl)thiovinyl]-3-cephem-4-carboxylate (29ca) as a new anti-MRSA parenteral cephalosporin candidate for further biological evaluation. The selected 29ca showed anti-MRSA activity comparable to that of vancomycin (VCM) both in vitro and in vivo, high affinity (IC50=2.7 μg/ml) for penicillin binding protein 2' (PBP2') of MRSA and potent activity against Gram-negative bacteria as well.

  在我们探索具有优异抗甲氧西林耐药金黄色葡萄球菌（MRSA）抗菌活性的新的头孢菌素衍生物的过程中，我们对具有l-甲基咪唑[1, 2-b]吡咯噻啉-6-基团的C-3链接间隔物进行了修改，其位于C-3'位置，以及具有2-(5-氨基-1, 2, 4-噻二唑-3-基)-2(Z)-环戊基氧基亚胺乙酰基团的C-7位置。最优间隔物是19a和29aa中的(E)-2-乙烯基和(E)-2-硫乙烯基，分别其抗MRSA活性是头孢佐芬（CZOP）活性的16到32倍。我们针对(E)-2-乙烯基和(E)-2-硫乙烯基间隔物，进一步修改了C-7酰基部分的烷氧亚胺基团和C-3'位置的1-烷基咪唑[1, 2-b]吡咯噻啉基团，并研究了这些衍生物的构效关系（SAR）。因此，我们选择了7β-[2-(5-氨基-1, 2, 4-噻二唑-3-基)-2(Z)-氟甲氧基亚胺乙酰氨基]-3-[(E)-2-(l-甲基咪唑[1, 2-b]吡咯噻啉-6-基)硫乙烯基]-3-头孢菌素-4-羧酸酯（29ca）作为新的抗MRSA注射用头孢菌素候选物进行进一步的生物评价。所选择的29ca在体外和体内的抗MRSA活性与万古霉素（VCM）相当，对MRSA的青霉素结合蛋白2'（PBP2'）具有高亲和力（IC50=2.7 μg/ml），并对革兰阴性细菌同样表现出强大的活性。
• [EN] PRODRUG INHIBITORS<br/>[FR] INHIBITEURS DE PROMÉDICAMENT
  申请人：UNIV LEIDEN

  公开号：WO2020204715A1

  公开（公告）日：2020-10-08

  Provided herein are compounds useful as metallo-β-lactamase (MBL) inhibitors. The compounds have a formula A–B, where A is a β-lactam antibiotic moiety comprising a bridging methylene (-CH2-) covalently attached to -B; and B is a latent MBL inhibitor. Also provided are formulations comprising such compounds; as well as such compounds or formulations for use as a medicament. The compounds and formulations may be used in the treatment of antibiotic resistance, bacterial infection. The compounds and formulations may be used in the inhibition of a bacterial MBL.

  本文提供了作为金属β-内酰胺酶（MBL）抑制剂有用的化合物。这些化合物具有A-B的结构式，其中A是一种β-内酰胺类抗生素基团，包括与-B共价连接的桥联甲基（-CH2-）；而B是一种潜在的MBL抑制剂。还提供了包含这些化合物的配方；以及这些化合物或配方用作药物的用途。这些化合物和配方可用于治疗抗生素耐药性、细菌感染。这些化合物和配方可用于抑制细菌MBL。
• [EN] INTERMEDIATES IN THE SYNTHESIS OF CEPHALOSPORIN COMPOUNDS<br/>[FR] INTERMÉDIAIRES DANS LA SYNTHÈSE DE COMPOSÉS DE CÉPHALOSPORINE
  申请人：MERCK SHARP & DOHME

  公开号：WO2016025813A1

  公开（公告）日：2016-02-18

  Described herein are crystalline forms of a compound of formula (ΙΙΓ), including toluene solvates ofT A TD-CLE, as well as processes for the preparation thereof and use thereof in the preparation of cephalosporin compounds such as ceftolozane. Provided herein is a crystalline form of a compound of formula (ΙΙΓ): wherein X is CI, Br, or I; and R1 and R2 are each independently an oxygen protecting group; processes for making the crystalline form, and use of said form in the synthesis of antibacterial cephalosporins such as ceftolozane.

  本文描述了一种化合物的结晶形式（ΙΙΓ），包括TATD-CLE的甲苯溶剂结晶形式，以及其制备和在制备头孢菌素类化合物如头孢噻唑烷中的用途。本文提供了一种化合物的结晶形式（ΙΙΓ）：其中X为Cl、Br或I；R1和R2分别独立为氧保护基团；制备该结晶形式的方法，以及该形式在合成头孢菌素类抗菌素如头孢噻唑烷中的用途。
• Design and synthesis of a β-lactamase activated 5-fluorouracil prodrug
  作者：Ryan M. Phelan、Marc Ostermeier、Craig A. Townsend

  DOI：10.1016/j.bmcl.2008.12.057

  日期：2009.2

  An efficient synthesis of a 5-fluorouracil-cephalosporin prodrug is described for use against colorectal and other cancers in antibody and gene-directed therapies. The compound shows stability in aqueous media until specifically activated by β-lactamase (βL). The kinetic parameters of the 5-fluorouracil-cephalosporin conjugate were determined in the presence of Enterobacter cloacae P99 βL (ECl βL)

  描述了一种有效合成的 5-氟尿嘧啶-头孢菌素前药，用于在抗体和基因导向疗法中对抗结直肠癌和其他癌症。该化合物在水性介质中表现出稳定性，直到被 β-内酰胺酶 (βL) 特异性激活。5-氟尿嘧啶-头孢菌素偶联物的动力学参数在阴沟肠杆菌P99 βL (ECl βL)存在下测定，显示K m  = 95.4 μM 和V max  = 3.21 μMol min -1  mg -1。该数据与已报道的相关系统相比具有优势，并且能够在体外和体内测试该前药对抗癌细胞系。