methyl 4-hydroxy-4-methylpentanoate | 89795-03-9

• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 脂肪酰基
• 英文名称: methyl 4-hydroxy-4-methylpentanoate
• CAS: 89795-03-9；7210-38-0
• 化学式: C₇H₁₄O₃
• 分子量: 146.186
• InChiKey: XWEVFCCQODTKSM-UHFFFAOYSA-N

物化性质

• 沸点：
  209.3±23.0 °C(Predicted)
• 密度：
  1.007±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  0.7
• 重原子数：
  10
• 可旋转键数：
  4
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.86
• 拓扑面积：
  46.5
• 氢给体数：
  1
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  methyl 4-hydroxy-4-methylpentanoate 在 palladium dihydroxide 2,6-二甲基吡啶 、 4-二甲氨基吡啶 、 lithium hydroxide 、 氢气 、 双氧水 、 1-羟基苯并三唑 、 三乙胺 、 N,N'-二环己基碳二亚胺 、 三氟乙酸 作用下， 以 四氢呋喃 、 甲醇 、 二氯甲烷 、 水 为溶剂， 反应 90.83h， 生成 hydroxydestruxin B
  参考文献：
  名称：

  Probing Host-Selective Phytotoxicity:  Synthesis of Destruxin B and Several Natural Analogues

  摘要：

  The syntheses of the host-selective phytotoxin destruxin B [cyclo(beta Ala-Hmp-Pro-Ile-MeVal-MeAla), Hmp = (2R)-2-hydroxy-4-methylpentanoic acid], and the closely related natural analogues homodestruxin B (MeVal --> MeIle), desmethyldestruxin B (MeVal --> Val), hydroxydestruxin B (Hmp --> Dhmp, Dhmp = (2R)-2,4-dihydroxy-4-methylpentanoic acid), and hydroxyhomodestruxin B (MeVal --> MeIle, Hmp-Dhmp) are described. In each case, the MeAla-beta Ala linkage was formed by cyclization and the precursor linear hexadepsipeptides were formed by condensing two three-residue fragments. Radiolabeled samples of destruxin B, homodestruxin B, and hydroxydestruxin B were prepared by coupling [3-C-14]-beta -alanine to the appropriate pentadepsipeptide followed by cyclization. A noteworthy feature of the synthesis involves the novel use of a Boc-hydrazide protecting group on dipeptides with a C-terminal N-methylalanine residue to inhibit the otherwise facile dioxopiperazine formation during peptide coupling.

  DOI：

  10.1021/jo015953+
• 作为产物：
  描述：

  5,5-二甲基-二氢-呋喃-2-酮 在 sodium hydroxide 作用下， 以 乙醚 、 乙醇 为溶剂， 反应 4.0h， 生成 methyl 4-hydroxy-4-methylpentanoate
  参考文献：
  名称：

  Probing Host-Selective Phytotoxicity:  Synthesis of Destruxin B and Several Natural Analogues

  摘要：

  The syntheses of the host-selective phytotoxin destruxin B [cyclo(beta Ala-Hmp-Pro-Ile-MeVal-MeAla), Hmp = (2R)-2-hydroxy-4-methylpentanoic acid], and the closely related natural analogues homodestruxin B (MeVal --> MeIle), desmethyldestruxin B (MeVal --> Val), hydroxydestruxin B (Hmp --> Dhmp, Dhmp = (2R)-2,4-dihydroxy-4-methylpentanoic acid), and hydroxyhomodestruxin B (MeVal --> MeIle, Hmp-Dhmp) are described. In each case, the MeAla-beta Ala linkage was formed by cyclization and the precursor linear hexadepsipeptides were formed by condensing two three-residue fragments. Radiolabeled samples of destruxin B, homodestruxin B, and hydroxydestruxin B were prepared by coupling [3-C-14]-beta -alanine to the appropriate pentadepsipeptide followed by cyclization. A noteworthy feature of the synthesis involves the novel use of a Boc-hydrazide protecting group on dipeptides with a C-terminal N-methylalanine residue to inhibit the otherwise facile dioxopiperazine formation during peptide coupling.

  DOI：

  10.1021/jo015953+

文献信息

• [EN] NOVEL CYCLOSPORIN DERIVATIVES AND USES THEREOF<br/>[FR] NOUVEAUX DÉRIVÉS DE CYCLOSPORINE ET LEURS UTILISATIONS
  申请人：S&T GLOBAL INC

  公开号：WO2017200984A1

  公开（公告）日：2017-11-23

  A compound of the Formula (I) is disclosed: (I) or pharmaceutically acceptable salt thereof, wherein the symbols are as defined in the specification. Also described are a pharmaceutical composition comprising the same and a method for treating or preventing viral infections, inflammation, dry eye, central nervous disorders, cardiovascular diseases, cancer, obesity, diabetes, muscular dystrophy, lung, and liver, and kindey diseases, and hair loss using the same.

  公开了化合物的公式（I）：（I）或其药学上可接受的盐，其中符号如规范中定义。还描述了包含相同化合物的药物组合物，以及使用该药物组合物治疗或预防病毒感染、炎症、干眼症、中枢神经障碍、心血管疾病、癌症、肥胖症、糖尿病、肌肉萎缩症、肺部和肝脏疾病、肾脏疾病和脱发的方法。
• 10.1039/d4sc02696a
  作者：Pasca, Francesco、Gelato, Yuri、Andresini, Michael、Romanazzi, Giuseppe、Degennaro, Leonardo、Colella, Marco、Luisi, Renzo

  DOI：10.1039/d4sc02696a

  日期：——

  platforms for visible light-mediated oxidative CO2-extrusion furnishing α-hydroxy radicals proved to be versatile C1 to Cn hydroxyalkylating agents. The direct decarboxylative Giese reaction (DDGR) is operationally simple, not requiring activator or sacrificial oxidants, and enables the synthesis of a diverse range of hydroxylated products, introducing connectivity typically precluded from conventional polar

  天然存在且易于获得的α-羟基羧酸(AHA)被用作可见光介导的氧化CO 2挤出的平台，提供α-羟基自由基，事实证明是通用的C1至C n羟烷基化剂。直接脱羧吉斯反应（DDGR）操作简单，不需要活化剂或牺牲氧化剂，并且能够合成多种羟基化产物，引入通常从传统极性域中排除的连接性。值得注意的是，该方法已扩展到广泛使用的乙醇酸，从而产生高效且前所未有的 C1 羟基同系化策略。流程技术的使用进一步促进了可扩展性，并为这种合成方法增添了绿色证书。
• NOVEL CYCLOSPORIN DERIVATIVES AND USES THEREOF
  申请人：S&T Global Inc.

  公开号：EP3458470A1

  公开（公告）日：2019-03-27
• Probing Host-Selective Phytotoxicity:  Synthesis of Destruxin B and Several Natural Analogues
  作者：Dale E. Ward、Yuanzhu Gai、Ryszard Lazny、M. Soledade C. Pedras

  DOI：10.1021/jo015953+

  日期：2001.11.1

  The syntheses of the host-selective phytotoxin destruxin B [cyclo(beta Ala-Hmp-Pro-Ile-MeVal-MeAla), Hmp = (2R)-2-hydroxy-4-methylpentanoic acid], and the closely related natural analogues homodestruxin B (MeVal --> MeIle), desmethyldestruxin B (MeVal --> Val), hydroxydestruxin B (Hmp --> Dhmp, Dhmp = (2R)-2,4-dihydroxy-4-methylpentanoic acid), and hydroxyhomodestruxin B (MeVal --> MeIle, Hmp-Dhmp) are described. In each case, the MeAla-beta Ala linkage was formed by cyclization and the precursor linear hexadepsipeptides were formed by condensing two three-residue fragments. Radiolabeled samples of destruxin B, homodestruxin B, and hydroxydestruxin B were prepared by coupling [3-C-14]-beta -alanine to the appropriate pentadepsipeptide followed by cyclization. A noteworthy feature of the synthesis involves the novel use of a Boc-hydrazide protecting group on dipeptides with a C-terminal N-methylalanine residue to inhibit the otherwise facile dioxopiperazine formation during peptide coupling.