(4R)-4-[(R)-1-hydroxyethyl]-2,2-dimethyl-N-(tert-butoxycarbonyl)-1,3-oxazolidine | 156173-83-0

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 唑烷类
• 英文名称: (4R)-4-[(R)-1-hydroxyethyl]-2,2-dimethyl-N-(tert-butoxycarbonyl)-1,3-oxazolidine
• 英文别名: tert-butyl (4R)-4-[(1R)-1-hydroxyethyl]-2,2-dimethyl-1,3-oxazolidine-3-carboxylate
• CAS: 156173-83-0
• 化学式: C₁₂H₂₃NO₄
• 分子量: 245.319
• InChiKey: BCTTWADLQPDUFB-RKDXNWHRSA-N

物化性质

• 熔点：
  87-88 °C
• 沸点：
  324.2±27.0 °C(Predicted)
• 密度：
  1.068±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  1.3
• 重原子数：
  17
• 可旋转键数：
  3
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.92
• 拓扑面积：
  59
• 氢给体数：
  1
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  (4R)-4-[(R)-1-hydroxyethyl]-2,2-dimethyl-N-(tert-butoxycarbonyl)-1,3-oxazolidine 在 吡啶 、 三氟甲磺酸酐 作用下， 以 二氯甲烷 为溶剂， 反应 3.5h， 以70%的产率得到(4S,5R)-4,8,8-trimethyl-1-aza-3,7-dioxabicyclo<3.3.0>octan-2-one
  参考文献：
  名称：

  脱氢寡肽。十七、从 L-和 D-苏氨酸衍生物实际合成 N,N-保护的 2,3-二氨基丁酸的所有非对映异构体

  摘要：

  在某些肽抗生素和毒素中发现的所有 2,3-二氨基丁酸的非对映异构体的合成都已完成。这四种异构体主要通过两种途径衍生，包括 L-或 D-苏氨酸衍生物的 β-取代基的 SN2 反转。检查了用于 SN2 反转的各种保护基团和有效的亲核试剂。

  DOI：

  10.1246/bcsj.68.1369
• 作为产物：
  描述：

  N-Boc-O-苄基-L-苏氨酸 在 sodium tetrahydroborate 、 N-羟基丁二酰亚胺 、 camphor-10-sulfonic acid 、 氨 、 sodium 、 N,N'-二环己基碳二亚胺 、 丙酮 作用下， 反应 14.0h， 生成 (4R)-4-[(R)-1-hydroxyethyl]-2,2-dimethyl-N-(tert-butoxycarbonyl)-1,3-oxazolidine
  参考文献：
  名称：

  脱氢寡肽。十七、从 L-和 D-苏氨酸衍生物实际合成 N,N-保护的 2,3-二氨基丁酸的所有非对映异构体

  摘要：

  在某些肽抗生素和毒素中发现的所有 2,3-二氨基丁酸的非对映异构体的合成都已完成。这四种异构体主要通过两种途径衍生，包括 L-或 D-苏氨酸衍生物的 β-取代基的 SN2 反转。检查了用于 SN2 反转的各种保护基团和有效的亲核试剂。

  DOI：

  10.1246/bcsj.68.1369

文献信息

• Design and Use of an Oxazolidine Silyl Enol Ether as a New Homoalanine Carbanion Equivalent for the Synthesis of Carbon-Linked Isosteres of <i>O</i>-Glycosyl Serine and <i>N</i>-Glycosyl Asparagine
  作者：Alessandro Dondoni、Alberto Marra、Alessandro Massi

  DOI：10.1021/jo981861h

  日期：1999.2.1

  A trimethylsilyl enol ether carrying the N-Boc 2,2-dimethyloxazolidine ring was designed to serve as a synthetic equivalent of the homoalanine carbanion for the introduction of the alpha-amino acid side chain at the anomeric carbon of sugars. This new functionalized silyl enol ether was prepared in multigram scale and high enantiomeric purity starting from methyl N-Boc-L-threoninate (six steps, 49%

  设计带有N-Boc 2，2-二甲基恶唑烷环的三甲基甲硅烷基烯醇醚，作为高丙氨酸碳负离子的合成等同物，用于在糖的异头碳处引入α-氨基酸侧链。从N-Boc-L-苏氨酸甲酯开始，以克级数和高对映体纯度制备这种新的官能化甲硅烷基烯醇醚（六步，收率49％）。该试剂用于C-糖基氨基酸的两种合成方法。在一种方法中，由BF（3）.Et（2）O促进的与四-O-苄基-D-吡喃半乳糖基三氯乙酰亚胺酸酯的偶联提供了作为主要产物的α-连接的C-糖苷（分离出的收率为30％）用叔丁基锂转化为β-连接的异构体。通过Barton-McCombie方法对这些化合物进行脱氧，并通过琼斯试剂的氧化裂解从恶唑烷环上脱除糖基部分，从而得到C-糖基丝氨酸等位基因α-和β-Gal-CH（2）（）-Ser。以类似的方式从四-O-苄基-D-吡喃葡萄糖基三氯乙酰亚胺酸酯开始制备α-和β-Glc-CH（2）（）-Ser。在第二种方法中，在BF（
• Synthesis of methylene isosteres of α- and β-d-galactopyranosyl-l-serine
  作者：Alessandro Dondoni、Alberto Marra

  DOI：10.1039/a800571k

  日期：——

  The BF3·Et2O promoted coupling of tetra-O-benzyl-α-D-galactopyranosyl trichloroacetimidate with a silyl enol ether carrying an oxazolidine ring leads to the α-C-glycosylmethyl ketone (32%, 95% ds) that is converted into the title α-C-glycosyl amino acid by carbonyl oxygen removal (Barton–McCombie) and oxidative cleavage (Jones) of the heterocyclic ring, and into the β-isomer by anomerization and the same two-step sequence.

  BF3Â-Et2O 促进了四-O-苄基-δ-D-吡喃半乳糖基三氯乙酰亚胺与带有恶唑烷环的硅基烯醚的偶联，产生了δ-C-糖基甲基酮（32%、95%ds），通过杂环的羰基脱氧（巴顿-麦康比）和氧化裂解（琼斯）将其转化为标题中的δ-C-糖基氨基酸，并通过异构化和相同的两步顺序将其转化为δ-异构体。
• Synthesis of ethylene isosteres of β-d-galactosyl- and β-d-glucosyl-l-asparagine
  作者：Alessandro Dondoni、Alessandro Massi、Alberto Marra

  DOI：10.1016/s0040-4039(98)01376-8

  日期：1998.9

  The Mukaiyama-type coupling of galactosyl and glucosyl aldehydes with a four-carbon atom silyl enol ether carrying the oxazolidine ring affords the corresponding sugar containing aldols (65–74%) that upon deoxygenation and oxidative cleavage of the heterocyclic ring lead to the title carbon-linked β-glycosyl amino acids.

  半乳糖基和葡糖基醛与带有恶唑烷环的四碳原子甲硅烷基烯醇醚的Mukaiyama型偶联提供了相应的含糖醛醇（65-74％），该醛在脱氧和杂环的氧化裂解后产生标题碳-连接的β-糖基氨基酸。
• An improved method for culturing Streptomyces sahachiroi: Biosynthetic origin of the enol fragment of azinomycin B
  作者：Gilbert T. Kelly、Vasudha Sharma、Coran M.H. Watanabe

  DOI：10.1016/j.bioorg.2007.08.002

  日期：2008.2

  Azinomycin B is an environmental DNA crosslinking agent produced by the soil microorganism Streptomyces sahachiroi. While the agent displays potent cytotoxic activities against leukemic cell lines and animal mouse models, the lack of a consistent supply of the natural product has hampered detailed biological investigations on the compound, including its mode of action and biosynthesis. We report here a significant methodological improvement in the culturing of the bacterium, which allows reliable and steady production of the natural product in good yields. The key experimental step involves the culturing of the strain on dehydrated plates, followed by the generation of a two-stage starter culture and subsequent fermentation of the strain under nutrient-starved conditions. We illustrate use of this culture system by investigating the formation of the enol fragment of the molecule in isotopic labeling experiments with threonine and several advanced precursors (beta-ketoamino acid 3, beta-hydroxyamino aldehyde 4, and beta-ketoaminoaldehyde 5). The results unequivocally show that threonine is the most advanced precursor accepted by the NRPS (non-ribosomal peptidyl synthetase) machinery for final processing and construction of the enol moiety of the natural product. (C) 2007 Elsevier Inc. All rights reserved.
• Dehydrooligopeptides. XVII. Practical Syntheses of All of the Diastereomers of<i>N</i>,<i>N</i>-Protected 2,3-Diaminobutanoic Acids from L- and D-Threonine Derivatives
  作者：Yutaka Nakamura、Miki Hirai、Kenji Tamotsu、Yasuchika Yonezawa、Chung-gi Shin

  DOI：10.1246/bcsj.68.1369

  日期：1995.5

  Syntheses of all of the diastereomers of 2,3-diaminobutanoic acids, found in some peptide antibiotics and toxins, were accomplished. The four isomers were derived mainly through two pathways including SN2 inversions of the β-substituent of L- or D-threonine derivatives. The various protecting groups and effective nucleophiles for the SN2 inversion were examined.

  在某些肽抗生素和毒素中发现的所有 2,3-二氨基丁酸的非对映异构体的合成都已完成。这四种异构体主要通过两种途径衍生，包括 L-或 D-苏氨酸衍生物的 β-取代基的 SN2 反转。检查了用于 SN2 反转的各种保护基团和有效的亲核试剂。