5,9-anhydro-6,7,8,10-tetra-O-benzyl-2,3,4-trideoxy-1,2-N,O-isopropylidene-2-(tert-butoxycarbonylamino)-D-threo-L-galacto-decitol | 204187-64-4

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: 5,9-anhydro-6,7,8,10-tetra-O-benzyl-2,3,4-trideoxy-1,2-N,O-isopropylidene-2-(tert-butoxycarbonylamino)-D-threo-L-galacto-decitol
• 英文别名: tert-butyl (4S)-2,2-dimethyl-4-[2-[(2S,3S,4R,5S,6R)-3,4,5-tris(phenylmethoxy)-6-(phenylmethoxymethyl)oxan-2-yl]ethyl]-1,3-oxazolidine-3-carboxylate
• CAS: 204187-64-4
• 化学式: C₄₆H₅₇NO₈
• 分子量: 751.96
• InChiKey: FXNIPBUGNPXVRB-MFNQEMNHSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  7.6
• 重原子数：
  55
• 可旋转键数：
  18
• 环数：
  6.0
• sp3杂化的碳原子比例：
  0.46
• 拓扑面积：
  84.9
• 氢给体数：
  0
• 氢受体数：
  8

反应信息

• 作为反应物：
  描述：

  5,9-anhydro-6,7,8,10-tetra-O-benzyl-2,3,4-trideoxy-1,2-N,O-isopropylidene-2-(tert-butoxycarbonylamino)-D-threo-L-galacto-decitol 在 jones reagent 作用下， 以 丙酮 为溶剂， 反应 3.5h， 以95%的产率得到5,9-anhydro-6,7,8,10-tetra-O-benzyl-2,3,4-trideoxy-2-(tert-butoxycarbonylamino)-D-threo-L-galacto-deconic acid
  参考文献：
  名称：

  Synthesis of methylene isosteres of α- and β-d-galactopyranosyl-l-serine

  摘要：

  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。

  DOI：

  10.1039/a800571k
• 作为产物：
  描述：

  BOC-苏氨酸甲酯 在 4-二甲氨基吡啶 、 sodium tetrahydroborate 、 lithium aluminium tetrahydride 、 偶氮二异丁腈 、 4 A molecular sieve 、 camphor-10-sulfonic acid 、 三氟化硼乙醚 、 四丁基氟化铵 、 叔丁基锂 、 三正丁基氢锡 、 三乙胺 、 pyridinium chlorochromate 作用下， 以 四氢呋喃 、 甲醇 、 乙醚 、 二氯甲烷 、 N,N-二甲基甲酰胺 、 甲苯 为溶剂， 反应 26.16h， 生成 5,9-anhydro-6,7,8,10-tetra-O-benzyl-2,3,4-trideoxy-1,2-N,O-isopropylidene-2-(tert-butoxycarbonylamino)-D-threo-L-galacto-decitol
  参考文献：
  名称：

  Synthesis of methylene isosteres of α- and β-d-galactopyranosyl-l-serine

  摘要：

  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。

  DOI：

  10.1039/a800571k

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（
• Expeditious Synthesis of β-Linked Glycosyl Serine Methylene Isosteres (β-C-Gly Ser) via Ethynylation of Sugar Lactones
  作者：Alessandro Dondoni、Giandomenico Mariotti、Alberto Marra、Alessandro Massi

  DOI：10.1055/s-2001-18058

  日期：——

  The addition of the lithium derivative of N-Boc 4-ethynyl-2,2-dimethyl-1,3-oxazolidine to tetra-O-benzyl-d-gluco- and galactonolactone and 2-azido-2-deoxy congeners afforded the corresponding ethynyl ketoses in fairly good yields (64-78%). Following the conversion of the ketoses into O-acetates and removal of the acetoxy group by silane reduction, the resulting β-linked ethynyl glycosides were transformed into N-Boc C-glycosyl α-aminobutyric acids by reduction of the triple bond using H2/Pd(OH)2 and oxidative cleavage of the oxazolidine ring using the Jones’ reagent. After the removal of O-benzyl groups of the carbohydrate moieties by hydrogenation and the reduction of azido to amino group, all compounds were subjected to acetylation and isolated as O- and N-acetyl derivatives. The C-glycosyl α-amino acids prepared correspond to methylene isosteres of O-glycosyl serines.

  将N-Boc 4-乙炔基-2,2-二甲基-1,3-噁唑烷的锂衍生物与四-O-苄基-d-葡萄糖和d-半乳糖内酯以及2-叠氮-2-脱氧同系物反应，得到相应的乙炔基酮，产率相当不错（64-78%）。在将酮转化为O-醋酸酯并通过硅烷还原去除醋酸氧基后，得到的β-连接乙炔基糖苷通过使用H2/Pd(OH)2还原三重键和利用琼斯试剂氧化开环将噁唑烷环转化为N-Boc C-糖苷 α-氨基丁酸。在通过氢化去除糖部分的O-苄基后，并将叠氮基还原为氨基后，所有化合物均经过醋酸化处理，并以O-和N-醋酸衍生物的形式分离出来。所制备的C-糖苷 α-氨基酸对应于O-糖苷丝氨酸的亚甲基等构体。
• Stereoselective synthesis of the C-linked analogue of β-d-galactopyranosyl-l-serine
  作者：Alessandro Dondoni、Alberto Marra、Alessandro Massi

  DOI：10.1016/s0040-4020(98)83019-6

  日期：1998.3

  The coupling of the D-serinal derivative 7 with the D-galactopyranosylmethylene phosphorane generated from the phosphonium salt 6 and reduction of the resulting alkene led to the C-glycosylated amino alcohol 9 that in turn was oxidized to the title amino acid in 44% overall yield. (C) 1998 Elsevier Science Ltd. All rights reserved.
• Synthesis of β-<scp>d</scp>-Galactosyl Ceramide Methylene Isostere
  作者：Alessandro Dondoni、Daniela Perrone、Elisa Turturici

  DOI：10.1021/jo990398l

  日期：1999.7.1

  The methylene isostere of the glycosphingolipid beta-D-galactosyl N-palmitoyl C-18 ceramide has been synthesized by a linear reaction sequence starting from a beta-linked D-galactopyranosyl aldehyde. First, this sugar aldehyde was converted into a methylenephosphorane which in turn was coupled with N-Boc serinal acetonide. The double bond of the resulting olefin was reduced and the oxazolidine ring was cleaved and oxidized to give a C-glycosyl N-Boc alpha-amino butanal (three-carbon chain elongation). Then, an additional C-15 carbon chain was installed by addition of lithium 1-pentadecyne to the above glycosyl amino aldehyde. The syn/anti ratio (70:30) of the resulting mixture of amino alcohols was reversed (5:95) by an oxidation-reduction sequence to achieve the same stereochemistry as in the hydrophilic head of D-erythro-sphingosines. The major product was subjected to the reduction of the triple bond with LiAlH4 to give the olefin with E geometry. Finally the N-amide group was installed by reaction with palmitoyl chloride and the O-benzyl protective groups of the sugar moiety were removed by treatment with lithium in liquid NH3-THF. The final product was characterized as the O-acetyl derivative.
• Synthesis and anti-tumor activity of β-C-glycoside analogs of the immunostimulant KRN7000
  作者：Mani Raj Chaulagain、Maarten H.D. Postema、Fred Valeriote、Halina Pietraszkewicz

  DOI：10.1016/j.tetlet.2004.07.163

  日期：2004.10

  A ring-closing metathesis approach was employed for the synthesis of a beta-C-glycoside analog of the immunostimulant KRN7000. The protected Gglycosyl amino acid derivative 18 was converted to amino-olefin 20, and osmylation served to install the diol unit as a mixture of separable syn and anti isomers. Deprotection to the hydroxy-amine 21 was followed by N-acylation and debenzylation to deliver the target compound 5. (C) 2004 Elsevier Ltd. All rights reserved.