甲氨蝶呤alpha-甲酯 | 66147-29-3

• 物质功能分类: 分析化学 - 标准品 - 药典标准品和杂质标准品
• 分子结构分类: 有机化合物 - 有机酸及其衍生物 - 羧酸及其衍生物
• 中文名称: 甲氨蝶呤alpha-甲酯
• 中文别名: 甲氨蝶呤杂质
• 英文名称: Methotrexate 1-methyl ester
• 英文别名: (4S)-4-[[4-[(2,4-diaminopteridin-6-yl)methyl-methylamino]benzoyl]amino]-5-methoxy-5-oxopentanoic acid
• CAS: 66147-29-3
• 化学式: C₂₁H₂₄N₈O₅
• 分子量: 468.472
• InChiKey: JYFDQHNTJJOKAS-AWEZNQCLSA-N

物化性质

• 溶解度：
  碱性溶液（微溶）、DMSO（微溶、加热）、甲醇（微溶）

计算性质

• 辛醇/水分配系数(LogP)：
  -1.5
• 重原子数：
  34
• 可旋转键数：
  10
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.29
• 拓扑面积：
  200
• 氢给体数：
  4
• 氢受体数：
  12

反应信息

• 作为反应物：
  描述：

  甲氨蝶呤alpha-甲酯 在 吡啶 、 lithium hydroxide 、 氢氟酸 、 benzotriazol-1-yloxyl-tris-(pyrrolidino)-phosphonium hexafluorophosphate 、 N,N-二异丙基乙胺 作用下， 以 甲醇 、 二氯甲烷 、 水 、 N,N-二甲基甲酰胺 为溶剂， 反应 8.0h， 生成
  参考文献：
  名称：

  Optimized design and synthesis of chemical dimerizer substrates for detection of glycosynthase activity via chemical complementation

  摘要：

  Glycosynthases catalyze the formation of a glycosidic bond between a glycosyl fluoride donor substrate and a glycosyl acceptor substrate with high yield, thus providing a valuable approach for the synthesis of carbohydrates and glycoconjugates. Chemical complementation can be used to link glycosynthase activity to the transcription of a reporter gene in vivo, providing a selection for the directed evolution of glycosynthase enzymes with improved properties. In this approach, glycosynthase activity is detected as covalent coupling between a small molecule disaccharide acceptor substrate and a small molecule disaccharide alpha-fluoro donor substrate. Here we report the optimized design and synthesis of these small molecule substrates. These optimized substrates are shown to give a robust, glycosynthase-dependent transcriptional read-out in the chemical complementation assay. The full synthesis and characterization of these substrates are reported for the first time. These optimized chemical dimerizer substrates should allow the potential of chemical complementation for the directed evolution of glycosynthases with diverse substrate specificities and improved properties to be fully realized. (c) 2006 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.bmc.2006.06.034
• 作为产物：
  描述：

  6-溴乙基-喋啶-2,4-二胺 在 三氟乙酸 作用下， 以 二氯甲烷 、 N,N-二甲基乙酰胺 为溶剂， 反应 7.0h， 生成 甲氨蝶呤alpha-甲酯
  参考文献：
  名称：

  Optimized design and synthesis of chemical dimerizer substrates for detection of glycosynthase activity via chemical complementation

  摘要：

  Glycosynthases catalyze the formation of a glycosidic bond between a glycosyl fluoride donor substrate and a glycosyl acceptor substrate with high yield, thus providing a valuable approach for the synthesis of carbohydrates and glycoconjugates. Chemical complementation can be used to link glycosynthase activity to the transcription of a reporter gene in vivo, providing a selection for the directed evolution of glycosynthase enzymes with improved properties. In this approach, glycosynthase activity is detected as covalent coupling between a small molecule disaccharide acceptor substrate and a small molecule disaccharide alpha-fluoro donor substrate. Here we report the optimized design and synthesis of these small molecule substrates. These optimized substrates are shown to give a robust, glycosynthase-dependent transcriptional read-out in the chemical complementation assay. The full synthesis and characterization of these substrates are reported for the first time. These optimized chemical dimerizer substrates should allow the potential of chemical complementation for the directed evolution of glycosynthases with diverse substrate specificities and improved properties to be fully realized. (c) 2006 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.bmc.2006.06.034

文献信息

• Syntheses of .alpha.- and .gamma.-substituted amides, peptides, and esters of methotrexate and their evaluation as inhibitors of folate metabolism
  作者：J. R. Piper、J. A. Montgomery、F. M. Sirotnak、P. L. Chello

  DOI：10.1021/jm00344a018

  日期：1982.2

  ester (2) and gamma-benzyl ester (6) served as key intermediates in syntheses of precursors to amides and peptides of methotrexate (MTX) involving both the alpha- and gamma-carboxyl groupings of the glutamate moiety. Coupling of 2 and 6 at the open carboxyl grouping with amino compounds was affected by the mixed anhydride method (using isobutyl chloroformate); carboxyl groupings of amino acids coupled

  N- [4-[[（苯甲氧基）羰基]甲基氨基]苯甲酰基] -L-谷氨酸α-苄基酯（2）和γ-苄基酯（6）是合成甲氨蝶呤酰胺和肽前体的关键中间体（MTX）涉及谷氨酸部分的α-和γ-羧基。混合酸酐法（使用氯甲酸异丁酯）影响开放式羧基上的2和6与氨基化合物的偶联。与2和6偶联的氨基酸的羧基被保护为苄基酯。N- [4-[[（（苄氧基）羰基]甲基氨基]苯甲酰基] -L-谷氨酸γ-甲基酯（5）是由L-谷氨酸γ-甲基酯制备的，是MTXγ-甲基酯的前体。 4-[[（（苄氧基）羰基]甲基氨基]苯甲酰氯（1）的制备方法类似于制备2和6的方法。通过在含有（i-Pr）2NEt的DMF中用MeI处理由γ-苄基酯6制备MTXα-甲基酯的前体。通过氢解作用除去苄基和（苄氧基）羰基保护基，并将脱保护的侧链前体通过与6-（溴甲基）-2,4-的烷基化反应转化为MTX的α-和γ-取代的酰胺，肽和酯。蝶啶二胺氢溴酸盐（12）。对制
• [EN] TRANS-CYCLOOCTENE BIOORTHOGONAL AGENTS AND USES IN CANCER AND IMMUNOTHERAPY<br/>[FR] AGENTS BIOORTHOGONAUX DE TRANS-CYCLOOCTÈNE ET LEURS UTILISATIONS DANS LE TRAITEMENT DU CANCER ET L'IMMUNOTHÉRAPIE
  申请人：TAMBO INC

  公开号：WO2021007160A1

  公开（公告）日：2021-01-14

  Trans-cyclooctene conjugates of therapeutic agents may be used for bioorthogonal delivery to a targeted location in a subject. The compositions and methods have applications in the treatment of various diseases or conditions including cancer, tumor growths, and bacterial infections.