5,9-anhydro-6,7,8,10-tetra-O-benzyl-2,3,4-trideoxy-2-(tert-butoxycarbonylamino)-D-threo-L-galacto-decitose | 236388-59-3

• 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-2-(tert-butoxycarbonylamino)-D-threo-L-galacto-decitose
• 英文别名: tert-butyl N-[(2S)-1-oxo-4-[(2S,3S,4R,5S,6R)-3,4,5-tris(phenylmethoxy)-6-(phenylmethoxymethyl)oxan-2-yl]butan-2-yl]carbamate
• CAS: 236388-59-3
• 化学式: C₄₃H₅₁NO₈
• 分子量: 709.88
• InChiKey: FRWWCXNFWREKQX-DUBFBOMLSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  6.6
• 重原子数：
  52
• 可旋转键数：
  20
• 环数：
  5.0
• sp3杂化的碳原子比例：
  0.4
• 拓扑面积：
  102
• 氢给体数：
  1
• 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-2-(tert-butoxycarbonylamino)-D-threo-L-galacto-decitose 在 盐酸 、 lithium aluminium tetrahydride 、 正丁基锂 、 4 Angstroem MS 作用下， 以 四氢呋喃 、 1,4-二氧六环 、 乙二醇二甲醚 、 正己烷 、 水 为溶剂， 反应 3.0h， 生成 (3'S,4'R)-3'-amino-(E)-nonadec-5'-en-4'-olyl 2,3,4-tetra-O-benzyl-β-C-D-galactopyranoside
  参考文献：
  名称：

  Synthesis of β-d-Galactosyl Ceramide Methylene Isostere

  摘要：

  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.

  DOI：

  10.1021/jo990398l
• 作为产物：
  描述：

  (4S)-4-(2'-carboxyethyl)-2,2-dimethyloxazolidine-3-carboxylic acid tert-butyl ester 在 Grubbs catalyst first generation 4-二甲氨基吡啶 、 四甲基乙二胺 、 四氯化钛 、 sodium hydride 、 对甲苯磺酸 、 N,N'-二环己基碳二亚胺 、 lead(II) chloride 作用下， 以 甲醇 为溶剂， 生成 5,9-anhydro-6,7,8,10-tetra-O-benzyl-2,3,4-trideoxy-2-(tert-butoxycarbonylamino)-D-threo-L-galacto-decitose
  参考文献：
  名称：

  Synthesis and anti-tumor activity of β-C-glycoside analogs of the immunostimulant KRN7000

  摘要：

  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.

  DOI：

  10.1016/j.tetlet.2004.07.163

文献信息

• 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.