DL-缬氨酸乙酯盐酸盐

• 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: DL-缬氨酸乙酯盐酸盐
• 英文名称: valine ethyl ester hydrochloride
• 英文别名: DL-valine ethyl ester hydrochloride；ethyl 2-amino-3-methylbutanoate;hydron;chloride
• 化学式: C₇H₁₅NO₂*ClH
• mdl: MFCD00067542
• 分子量: 181.663
• InChiKey: PQGVTLQEKCJXKF-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  0.81
• 重原子数：
  11
• 可旋转键数：
  4
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.857
• 拓扑面积：
  53.9
• 氢给体数：
  1
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  DL-缬氨酸乙酯盐酸盐 以 甲苯 为溶剂， 反应 5.0h， 生成 2-异氰酰基-3-甲基丁酸乙酯
  参考文献：
  名称：

  Organosilicon synthesis of isocyanates: IV. Synthesis of isocyanates from aliphatic and alkylaromatic amino acid esters

  摘要：

  Treatment of an alcoholic suspension of amino acids with trimethylchlorosilane yielded phenylglycine, valine, beta-phenylalanine, and homovaline ester hydrochlorides. Their saccharin-catalyzed silylation with hexamethyldisilazane proceeds quantitatively and involves only one proton of the amino group. The best conversion of the amino acid esters to the corresponding isocyanates was achieved by phosgene treatment of their monosilyl urethanes, rather than of the silylated amino esters. Monosilyl urethanes are formed quantitatively by treatment of the amino acid ester hydrochlorides with the hexamethyldisilazane-CO2 system. The H-1 NMR spectra show that monosilyl urethanes derived from alpha- and beta-amino acid esters are characterized by intramolecular interaction of the silicon atom and the oxygen atom of the carboxy group.

  DOI：

  10.1134/s1070363207040135
• 作为产物：
  描述：

  乙醇 、 D,L-valine 在 三甲基氯硅烷 作用下， 以99.1%的产率得到DL-缬氨酸乙酯盐酸盐
  参考文献：
  名称：

  Organosilicon synthesis of isocyanates: IV. Synthesis of isocyanates from aliphatic and alkylaromatic amino acid esters

  摘要：

  Treatment of an alcoholic suspension of amino acids with trimethylchlorosilane yielded phenylglycine, valine, beta-phenylalanine, and homovaline ester hydrochlorides. Their saccharin-catalyzed silylation with hexamethyldisilazane proceeds quantitatively and involves only one proton of the amino group. The best conversion of the amino acid esters to the corresponding isocyanates was achieved by phosgene treatment of their monosilyl urethanes, rather than of the silylated amino esters. Monosilyl urethanes are formed quantitatively by treatment of the amino acid ester hydrochlorides with the hexamethyldisilazane-CO2 system. The H-1 NMR spectra show that monosilyl urethanes derived from alpha- and beta-amino acid esters are characterized by intramolecular interaction of the silicon atom and the oxygen atom of the carboxy group.

  DOI：

  10.1134/s1070363207040135

文献信息

• PHARMACEUTICAL COMPOUNDS AS INHIBITORS OF CELL PROLIFERATION AND THE USE THEREOF
  申请人：ANDERSON MARK B.

  公开号：US20100068197A1

  公开（公告）日：2010-03-18

  Disclosed are compounds of Formula I effective as cytotoxic agents. The compounds of this invention are useful in the treatment of a variety of clinical conditions in which uncontrolled growth and spread of abnormal cells occurs.

  揭示的是作为细胞毒性剂有效的I式化合物。本发明的化合物在治疗多种临床病况中是有用的，这些病况中发生异常细胞的不受控制的生长和扩散。
• Hypolipidemic alkenesulfonamides
  申请人：Pfizer Inc.

  公开号：US03983107A1

  公开（公告）日：1976-09-28

  Method for lowering blood liped levels in mammals, using certain derivatives of N-carbamoyl-2-phenylethenesulfonamide, many of which are novel.

  在哺乳动物中降低血脂水平的方法，使用N-氨基甲酰基-2-苯乙烯磺酰胺的某些衍生物，其中许多是新颖的。
• A convenient method for the enantiomeric separation of α-amino acid esters as benzophenone imine Schiff base derivatives
  作者：Hu Huang、Wen Jun Xu、Jing-Yu Jin、Joon Hee Hong、Hyun-Jae Shin、Wonjae Lee

  DOI：10.1007/s12272-012-0609-6

  日期：2012.6

  the separation of α-amino acid esters as benzophenone Schiff base derivatives on coated chiral stationary phases (CSPs) (Chiralcel OD-H, Chiralcel OD, Chiralpak AD-H, Chiralpak AD, and Chiralpak AS) or covalently immobilized CSPs (Chiralpak IA, Chiralpak IB, and Chiralpak IC) derived from polysaccharide derivatives is described. Benzophenone imine derivatives of α-amino acid esters were readily prepared

  一种方便的液相色谱方法，用于在涂层手性固定相 (CSP)（Chiralcel OD-H、Chiralcel OD、Chiralpak AD-H、Chiralpak AD 和 Chiralpak AS）上或共价分离作为二苯甲酮席夫碱衍生物的 α-氨基酸酯描述了源自多糖衍生物的固定化 CSP（Chiralpak IA、Chiralpak IB 和 Chiralpak IC）。通过在 2-丙醇中搅拌二苯甲酮亚胺和 α-氨基酸酯的盐酸盐，很容易制备 α-氨基酸酯的二苯甲酮亚胺衍生物。色谱分离以1.0 mL/min的流速和254 nm的检测波长进行；0.5% 2-丙醇/己烷 (v/v) 用于 CSP。总的来说，Chiralpak IC 的分辨率优于其他 CSP。此外，
• Efficient Synthesis of New Tetracyclic Benzofuro[3,2-<i>d</i>]-imidazo[1,2-<i>a</i>]pyrimidine-2,5-(1<i>H</i>,3<i>H</i>)-diones
  作者：Yanggen Hu、Min Liu、Mingwu Ding

  DOI：10.1002/cjoc.201090072

  日期：2010.2

  with aromaic isocyanates gave carbodiimides (2), which were allowed to react further with (‐amino ester in the presence of a catalytic amount of sodium ethoxide to give selectively new tetracyclic benzofuro[3,2‐d]imidazo[1,2‐a]pyrimidine‐2,5‐(1H,3H)‐diones (5) in good yields. X‐ray structure analysis of 5i verified the proposed structure and the reaction selectivity.

  亚氨基磷烷（1）与芳香族异氰酸酯的氮杂-维蒂希反应生成碳二亚胺（2），使其在催化量的乙醇钠存在下与（ -氨基酯）进一步反应，从而选择性地生成新的四环苯并呋喃[3,2]。 - d ]咪唑并[1,2一]嘧啶-2,5-（1 ħ，3 ħ） -二酮（5。以良好产率）的X-射线结构分析5I验证所提出的结构和反应选择性。
• Short Synthesis of Oxetane and Azetidine 3-Aryl-3-carboxylic Acid Derivatives by Selective Furan Oxidative Cleavage
  作者：Maryne A. J. Dubois、Milo A. Smith、Andrew J. P. White、Alvin Lee Wei Jie、James J. Mousseau、Chulho Choi、James A. Bull

  DOI：10.1021/acs.orglett.0c01214

  日期：2020.7.17

  Four-membered rings remain underexplored motifs despite offering attractive physicochemical properties for medicinal chemistry. Arylacetic acids bearing oxetanes, azetidines, and cyclobutanes are prepared in two steps: a catalytic Friedel–Crafts reaction from four-membered ring alcohol substrates, followed by mild oxidative cleavage. The suitability of the products as building blocks is reflected in

  尽管四元环为药物化学提供了引人注目的理化性质，但它们仍然是未开发的基序。带有氧杂环丁烷，氮杂环丁烷和环丁烷的丙烯酸可以分两个步骤制备：从四元环醇底物进行的Friedel-Crafts催化反应，然后进行温和的氧化裂解。产品作为构建基块的适用性体现在其易于纯化和易于衍生化方面。实例包括杂芳族化合物和芳基三氟甲磺酸酯，以及氧杂环丁烷衍生的芬芬药物类似物和含有氮杂环丁烷氨基酸残基的新内啡肽衍生物。

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