(3R,4R,7R)-2-(4-methoxybenzyl)-1-oxo-3-phenyl-5-thia-2,8-diazaspiro[3.4]octane-7,8-dicarboxylic acid 8-tert-butyl ester 7-methyl ester | 1024019-32-6

• 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: (3R,4R,7R)-2-(4-methoxybenzyl)-1-oxo-3-phenyl-5-thia-2,8-diazaspiro[3.4]octane-7,8-dicarboxylic acid 8-tert-butyl ester 7-methyl ester
• 英文别名: 8-O-tert-butyl 7-O-methyl (1R,4R,7R)-2-[(4-methoxyphenyl)methyl]-3-oxo-1-phenyl-5-thia-2,8-diazaspiro[3.4]octane-7,8-dicarboxylate
• CAS: 1024019-32-6
• 化学式: C₂₆H₃₀N₂O₆S
• 分子量: 498.6
• InChiKey: FEVFJEKNFJBGFF-LZCXECNNSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.7
• 重原子数：
  35
• 可旋转键数：
  8
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.42
• 拓扑面积：
  111
• 氢给体数：
  0
• 氢受体数：
  7

反应信息

• 作为产物：
  描述：

  (2S,4R)-1,3-thiazolidine-2,3,4-tricarboxylic acid 3-(1,1-dimethylethyl) ester 4-methyl ester 、 (E)-N-benzylidene-1-(4-methoxyphenyl)methanamine 在 2-氯-1-甲基吡啶碘化物 、 三乙胺 作用下， 以 二氯甲烷 为溶剂， 以35%的产率得到(3R,4R,7R)-2-(4-methoxybenzyl)-1-oxo-3-phenyl-5-thia-2,8-diazaspiro[3.4]octane-7,8-dicarboxylic acid 8-tert-butyl ester 7-methyl ester
  参考文献：
  名称：

  Stereoselective synthesis of 4-substituted azetidine-2,3-diones by ring opening of 1,3-thiazolidine-derived spiro-β-lactams

  摘要：

  New 3-heterocycle substituted 1,3-thiazolidine-derived 4-spiro-beta-lactams with a relative trans-configuration were stereoselectively synthesised by means of a Staudinger ketene-imine reaction between the ketene generated from the (2S,4R)-1,3-thiazolidine-2,3,4-tricarboxylic acid 3-(1,1-dimethylethyl) 4-methyl ester 1 and imines 2b-e. The 1,3-thiazolidine-derived 4-spiro-beta-lactams were transformed into the corresponding enantiomerically pure 4-heterocycle substituted azetidine-2,3-diones by means of an oxidative cleavage of the 1,3-thiazolidine ring. The opening of the 1,3-thiazolidine ring was studied under different experimental conditions and a consistent mechanism is proposed. (C) 2008 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tetasy.2008.02.011

文献信息

• Stereoselective synthesis of 4-substituted azetidine-2,3-diones by ring opening of 1,3-thiazolidine-derived spiro-β-lactams
  作者：Giuseppe Cremonesi、Piero Dalla Croce、Francesco Fontana、Concetta La Rosa

  DOI：10.1016/j.tetasy.2008.02.011

  日期：2008.3

  New 3-heterocycle substituted 1,3-thiazolidine-derived 4-spiro-beta-lactams with a relative trans-configuration were stereoselectively synthesised by means of a Staudinger ketene-imine reaction between the ketene generated from the (2S,4R)-1,3-thiazolidine-2,3,4-tricarboxylic acid 3-(1,1-dimethylethyl) 4-methyl ester 1 and imines 2b-e. The 1,3-thiazolidine-derived 4-spiro-beta-lactams were transformed into the corresponding enantiomerically pure 4-heterocycle substituted azetidine-2,3-diones by means of an oxidative cleavage of the 1,3-thiazolidine ring. The opening of the 1,3-thiazolidine ring was studied under different experimental conditions and a consistent mechanism is proposed. (C) 2008 Elsevier Ltd. All rights reserved.