β-OH-D-leucine ethyl ester | 609340-69-4

• 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
• 英文名称: β-OH-D-leucine ethyl ester
• 英文别名: β-OH-D-Leu-OEt；(2R,3R)-β-OH-Leu-OEt；Ethyl (2R,3R)-2-amino-3-hydroxy-4-methylpentanoate
• CAS: 609340-69-4
• 化学式: C₈H₁₇NO₃
• 分子量: 175.228
• InChiKey: BYLXGUDHALHYSB-RNFRBKRXSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  0.3
• 重原子数：
  12
• 可旋转键数：
  5
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.88
• 拓扑面积：
  72.6
• 氢给体数：
  2
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  β-OH-D-leucine ethyl ester 在 6-chloro-3-((dimethylamino)(dimethyliminio)methyl)-1H-benzo[d][1,2,3]triazol-3-ium-1-olatehexafluorophosphate(V) 、 lithium hydroxide monohydrate 、 水 、 N,N-二异丙基乙胺 、 三氟乙酸 、 sodium hydroxide 作用下， 以 四氢呋喃 、 1,4-二氧六环 、 二氯甲烷 、 N,N-二甲基甲酰胺 、 叔丁醇 为溶剂， 反应 6.0h， 生成
  参考文献：
  名称：

  Design, synthesis, and evaluation, derivatives of the fat-accumulation inhibitor ternatin: toward ternatin molecular probes

  摘要：

  Ternatin, a cyclic heptapeptide derived from mushroom, strongly inhibits fat accumulation in 3T3-L1 adipocytes. However, its mechanism of action remains unclear. In this Letter, we designed, synthesized, and evaluated its derivatives for use as molecular probes to isolate its target protein. Finally, we successfully established a pair of ternatin molecular probes. (C) 2014 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tetlet.2014.06.036
• 作为产物：
  描述：

  4-甲基戊-2-烯酸乙酯 在 氯化亚砜 、 sodium azide 、 甲基磺酰胺 、 AD-mix β 、 5%-palladium/activated carbon 、 氢气 作用下， 以 甲醇 、 四氯化碳 、 水 、 丙酮 、 叔丁醇 为溶剂， 反应 89.0h， 生成 β-OH-D-leucine ethyl ester
  参考文献：
  名称：

  Design, synthesis, and evaluation, derivatives of the fat-accumulation inhibitor ternatin: toward ternatin molecular probes

  摘要：

  Ternatin, a cyclic heptapeptide derived from mushroom, strongly inhibits fat accumulation in 3T3-L1 adipocytes. However, its mechanism of action remains unclear. In this Letter, we designed, synthesized, and evaluated its derivatives for use as molecular probes to isolate its target protein. Finally, we successfully established a pair of ternatin molecular probes. (C) 2014 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tetlet.2014.06.036

文献信息

• Stereochemistry and Conformation of Skyllamycin, a Non-Ribosomally Synthesized Peptide from<i>Streptomyces</i>sp. Acta 2897
  作者：Vivien Schubert、Florent Di Meo、Pierre-Loïc Saaidi、Stefan Bartoschek、Hans-Peter Fiedler、Patrick Trouillas、Roderich D. Süssmuth

  DOI：10.1002/chem.201304562

  日期：2014.4.22

  Skyllamycin is a non‐ribosomally synthesized cyclic depsipeptide from Streptomyces sp. Acta 2897 that inhibits PDGF‐signaling. The peptide scaffold contains an N‐terminal cinnamoyl moiety, a β‐methylation of aspartic acid, three β‐hydroxylated amino acids and one rarely occurring α‐hydroxy glycine. With the exception of α‐hydroxy glycine, the stereochemistry of the amino acids was assigned by comparison

  Skyllamycin是来自链霉菌属的非核糖体合成的环状双缩肽。抑制PDGF信号的Acta 2897。肽支架包含一个N末端的肉桂酰基部分，一个天冬氨酸的β-甲基化，三个β-羟基化氨基酸和一个罕见的α-羟基甘氨酸。除α-羟基甘氨酸外，通过手性GC-MS和Marfey-HPLC分析将氨基酸的立体化学与合成参考氨基酸进行比较。在碱性和酸性条件下不稳定的α-羟基甘氨酸的立体化学是通过构象分析，结合NOESY-NMR光谱，模拟退火和自由MD模拟的数据确定的。模拟程序适用于R-和Skyllamycin结构的S-构型α-羟基甘氨酸，并与NOESY数据进行比较。两种方法（模拟退火和自由MD模拟）均独立支持S配置的α-羟基甘氨酸，从而实现了Skyllamycin结构中所有立体中心的分配，并将两组分黄素依赖性单加氧酶（Sky39）发挥了S选择性的作用。
• Use of Bis-(chiral α-methylbenzyl)glycine Esters for Synthesis of Enantiopure β-Hydroxyamino Esters
  作者：Ayako Yamashita、Emily B. Norton、R. Thomas Williamson、Douglas M. Ho、Sandra Sinishtaj、Tarek S. Mansour

  DOI：10.1021/ol030085j

  日期：2003.9.1

  [reaction: see text] Aldol reactions using bis-(chiral alpha-methylbenzyl)glycine esters with aldehydes gave excellent diastereoselectivity. Thus, an enantiopure ribosylglycine was prepared for the synthesis of analogues of the natural antibiotics muraymycin. This method was extended for formation of beta-hydroxyamino esters.

  [反应：见正文]使用双-（手性α-甲基苄基）甘氨酸酯与醛类的醛醇缩合反应具有出色的非对映选择性。因此，制备了对映体纯的核糖基甘氨酸，用于合成天然抗生素穆雷霉素的类似物。该方法被扩展用于形成β-羟基氨基酯。
• Convergent synthesis and in vivo inhibitory effect on fat accumulation of (−)-ternatin, a highly N-methylated cyclic peptide
  作者：Kenichiro Shimokawa、Kaoru Yamada、Masaki Kita、Daisuke Uemura

  DOI：10.1016/j.bmcl.2007.06.015

  日期：2007.8

  (-)-Ternatin (1), a highly N-methylated cyclic heptapeptide, is a potent inhibitor of fat accumulation against 3T3-LI murine adipocytes (EC50 = 0.14 mu g/mL) [Shimokawa, K.; Mashima, I.; Asai, A.; Yamada, K.; Kita, M.; Uemura, D. Tetrahedron Lett. 2006, 47, 4445]. Compound 1 was synthesized from Boc-protected amino acids in solution. Upon treatment with 1 at 5 mg/kg/day, increases in body weight and fat accumulation in high-fat-fied mice were both significantly suppressed. 0 2007 Elsevier Ltd. All rights reserved.

  (−)-Ternatin (1) 是一种高度N-甲基化的环状七肽，是针对 3T3-LI 小鼠脂肪细胞的强效脂肪积累抑制剂（EC50 = 0.14 μg/mL）[Shimokawa, K.; Mashima, I.; Asai, A.; Yamada, K.; Kita, M.; Uemura, D. Tetrahedron Lett. 2006, 47, 4445]。化合物 1 通过 Boc 保护的氨基酸在溶液中合成。在高脂饮食小鼠中，每天给予 5 mg/kg 的化合物 1 处理后，体重增加和脂肪积累均显著受到抑制。2007 Elsevier 有限公司。版权所有。
• Importance of the backbone conformation of (−)-ternatin in its fat-accumulation inhibitory activity against 3T3-L1 adipocytes
  作者：Kenichiro Shimokawa、Ryoka Miwa、Kaoru Yamada、Daisuke Uemura

  DOI：10.1039/b818903j

  日期：——

  Key relationships between the intramolecular H-bond-derived backbone conformation and the bioactivity of the novel fat-accumulation inhibitor (−)-ternatin are examined by analyses of the NMR spectroscopic data and CD spectra of designed analogues. The results reveal that the β-turn structure of (−)-ternatin is responsible for its potent fat-accumulation inhibitory effect against 3T3-L1 murine adipocytes.

  通过分析设计的类似物的核磁共振光谱数据和CD光谱，研究了分子内H键衍生的骨架构象与新型脂肪蓄积抑制剂(â)-ternatin的生物活性之间的关键关系。结果表明，(â)-ternatin的δ-匝结构是其对3T3-L1小鼠脂肪细胞产生强效脂肪积累抑制作用的原因。
• Ternatin and improved synthetic variants kill cancer cells by targeting the elongation factor-1A ternary complex
  作者：Jordan D Carelli、Steven G Sethofer、Geoffrey A Smith、Howard R Miller、Jillian L Simard、William C Merrick、Rishi K Jain、Nathan T Ross、Jack Taunton

  DOI：10.7554/elife.10222

  日期：——

  Cyclic peptide natural products have evolved to exploit diverse protein targets, many of which control essential cellular processes. Inspired by a series of cyclic peptides with partially elucidated structures, we designed synthetic variants of ternatin, a cytotoxic and anti-adipogenic natural product whose molecular mode of action was unknown. The new ternatin variants are cytotoxic toward cancer cells, with up to 500-fold greater potency than ternatin itself. Using a ternatin photo-affinity probe, we identify the translation elongation factor-1A ternary complex (eEF1A·GTP·aminoacyl-tRNA) as a specific target and demonstrate competitive binding by the unrelated natural products, didemnin and cytotrienin. Mutations in domain III of eEF1A prevent ternatin binding and confer resistance to its cytotoxic effects, implicating the adjacent hydrophobic surface as a functional hot spot for eEF1A modulation. We conclude that the eukaryotic elongation factor-1A and its ternary complex with GTP and aminoacyl-tRNA are common targets for the evolution of cytotoxic natural products.

  环肽天然产物的发展利用了多种蛋白质靶标，其中许多靶标控制着重要的细胞过程。受一系列结构已部分阐明的环肽的启发，我们设计出了具有细胞毒性和抗脂肪生成作用的天然产品 ternatin 的合成变体，而这种天然产品的分子作用模式尚不清楚。新的燕麦素变体对癌细胞具有细胞毒性，其效力比燕麦素本身高出 500 倍。利用特纳丁的光亲和探针，我们确定了翻译延伸因子-1A 三元复合物（eEF1A-GTP-氨基酰-tRNA）为特异性靶标，并证明了与之无关的天然产物--didemnin 和 cytotrienin 的竞争性结合。eEF1A 结构域 III 的突变阻止了 ternatin 的结合，并使其对细胞毒性效应产生抗性，这表明邻近的疏水表面是 eEF1A 调节的功能热点。我们的结论是，真核生物伸长因子-1A及其与 GTP 和氨基酰-tRNA 的三元复合物是细胞毒性天然产物进化的共同目标。