Benzoic acid (2R,4aR,6S,7R,8R,8aS)-7-acetylamino-6-benzyloxy-2-phenyl-hexahydro-pyrano[3,2-d][1,3]dioxin-8-yl ester | 206649-88-9

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 吡喃二恶英
• 英文名称: Benzoic acid (2R,4aR,6S,7R,8R,8aS)-7-acetylamino-6-benzyloxy-2-phenyl-hexahydro-pyrano[3,2-d][1,3]dioxin-8-yl ester
• 英文别名: [(2R,4aR,6S,7R,8R,8aS)-7-acetamido-2-phenyl-6-phenylmethoxy-4,4a,6,7,8,8a-hexahydropyrano[3,2-d][1,3]dioxin-8-yl] benzoate
• CAS: 206649-88-9
• 化学式: C₂₉H₂₉NO₇
• 分子量: 503.552
• InChiKey: LQJFJWAUQYLCIP-YEPDLNCFSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.6
• 重原子数：
  37
• 可旋转键数：
  8
• 环数：
  5.0
• sp3杂化的碳原子比例：
  0.31
• 拓扑面积：
  92.3
• 氢给体数：
  1
• 氢受体数：
  7

反应信息

• 作为反应物：
  描述：

  Benzoic acid (2R,4aR,6S,7R,8R,8aS)-7-acetylamino-6-benzyloxy-2-phenyl-hexahydro-pyrano[3,2-d][1,3]dioxin-8-yl ester 在 sodium methylate 、 四氯化锡 、 溶剂黄146 作用下， 以 甲醇 、 水 为溶剂， 反应 19.25h， 生成 benzyl β-D-galactopyranosyl-(1->6)-2-acetamido-2-deoxy-α-D-glucopyranoside
  参考文献：
  名称：

  One-pot synthesis of β-d-Gal>(1 → 4)[β-d-Galp(1 → 6)]-d-GlcNAc, a ‘core’ trisaccharide linked O-glycosidically in glycoproteins of Trypanosoma cruzi

  摘要：

  Tin(IV) chloride-promoted condensation of benzyl 2-acetamido-3-O-benzoyl-2-deoxy-alpha-D-glucopyranoside (4) with penta-O-benzoyl-beta-D-galactopyranose (6) gave the derivative of beta-D-Galp-(1 --> 6)-alpha-D-GlcNAc 7 in 80% yield, This was glycosylated with penta-O-benzoyl-alpha,beta- D-galactofuranose (5>, employing the same catalyst, to afford the protected benzyl per-O-benzoyl-beta-D-Galf(1 --> 4)[beta-D-Galp(1 --> 6)]D-GlcNAc 10 in 41% yield, Alternatively, compound 10 was obtained directly in a one-pot reaction from 4, by sequential addition of 6 and 5 (34% yield). beta-Glycosidic linkages were diastereoselectively formed. De-O-benzoylation of 10, followed by heterogeneous catalytic transfer hydrogenolysis of the benzyl group afforded the free trisaccharide beta-D-Galf(1 --> 4)[beta-D-Galp(1 --> 6)]-D-GlcNAc (14) in 98% yield from 10. Sodium borohydride reduction of 14 gave the corresponding alditol, whose spectral data were identical to those reported for the alditol obtained from the 38-43 kDa cell-surface glycoprotein of Trypanosoma cruzi. (C) 1998 Elsevier Science Ltd.

  DOI：

  10.1016/s0008-6215(97)00256-5
• 作为产物：
  描述：

  苄基-2-乙酰胺基-2-脱氧-Alpha-D-吡喃葡萄糖苷 在 吡啶 、 对甲苯磺酸 作用下， 以 N,N-二甲基甲酰胺 为溶剂， 反应 5.5h， 生成 Benzoic acid (2R,4aR,6S,7R,8R,8aS)-7-acetylamino-6-benzyloxy-2-phenyl-hexahydro-pyrano[3,2-d][1,3]dioxin-8-yl ester
  参考文献：
  名称：

  One-pot synthesis of β-d-Gal>(1 → 4)[β-d-Galp(1 → 6)]-d-GlcNAc, a ‘core’ trisaccharide linked O-glycosidically in glycoproteins of Trypanosoma cruzi

  摘要：

  Tin(IV) chloride-promoted condensation of benzyl 2-acetamido-3-O-benzoyl-2-deoxy-alpha-D-glucopyranoside (4) with penta-O-benzoyl-beta-D-galactopyranose (6) gave the derivative of beta-D-Galp-(1 --> 6)-alpha-D-GlcNAc 7 in 80% yield, This was glycosylated with penta-O-benzoyl-alpha,beta- D-galactofuranose (5>, employing the same catalyst, to afford the protected benzyl per-O-benzoyl-beta-D-Galf(1 --> 4)[beta-D-Galp(1 --> 6)]D-GlcNAc 10 in 41% yield, Alternatively, compound 10 was obtained directly in a one-pot reaction from 4, by sequential addition of 6 and 5 (34% yield). beta-Glycosidic linkages were diastereoselectively formed. De-O-benzoylation of 10, followed by heterogeneous catalytic transfer hydrogenolysis of the benzyl group afforded the free trisaccharide beta-D-Galf(1 --> 4)[beta-D-Galp(1 --> 6)]-D-GlcNAc (14) in 98% yield from 10. Sodium borohydride reduction of 14 gave the corresponding alditol, whose spectral data were identical to those reported for the alditol obtained from the 38-43 kDa cell-surface glycoprotein of Trypanosoma cruzi. (C) 1998 Elsevier Science Ltd.

  DOI：

  10.1016/s0008-6215(97)00256-5