5-((Z)-3-[(S)-4-((E)-5-bromo-4-methyl-pent-3-enyl)-5-oxo-2,5-dihydro-furan-2-yl]-2-methyl-propenyl)-2-formylfuran-3-carboxylic acid methyl ester | 1224868-28-3

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 吡喃
• 英文名称: 5-((Z)-3-[(S)-4-((E)-5-bromo-4-methyl-pent-3-enyl)-5-oxo-2,5-dihydro-furan-2-yl]-2-methyl-propenyl)-2-formylfuran-3-carboxylic acid methyl ester
• CAS: 1224868-28-3
• 化学式: C₂₁H₂₃BrO₆
• 分子量: 451.314
• InChiKey: BLSLXUDMBDLKSH-AZZYUMNSSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.65
• 重原子数：
  28.0
• 可旋转键数：
  9.0
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.38
• 拓扑面积：
  82.81
• 氢给体数：
  0.0
• 氢受体数：
  6.0

反应信息

• 作为产物：
  描述：

  2-formyl-5-((Z)-3-[(S)-4-((E)-5-hydroxy-4-methyl-pent-3-enyl)-5-oxo-2,5-dihydro-furan-2-yl]-2-methyl-propenyl)-furan-3-carboxylic acid methyl ester 在 N-溴代丁二酰亚胺(NBS) 、 三苯基膦 作用下， 以 二氯甲烷 为溶剂， 反应 0.33h， 以67%的产率得到5-((Z)-3-[(S)-4-((E)-5-bromo-4-methyl-pent-3-enyl)-5-oxo-2,5-dihydro-furan-2-yl]-2-methyl-propenyl)-2-formylfuran-3-carboxylic acid methyl ester
  参考文献：
  名称：

  Total synthesis of (+)-Z-deoxypukalide, a furanobutenolide-based cembranoid isolated from the pacific octocoral Leptogorgia spp.

  摘要：

  A total synthesis of (+)-Z-deoxypukalide 3 using a combination of Stille and Nozaki-Hiyama-Kishi(NHK) coupling reactions as key steps, is described. During this study a new practical synthesis of the substituted butenolide intermediate 10, based on a combination of RCM and CM reactions from the cyclobutene ester 21 in the presence of 2-methylpropenol was also developed. Attempts to apply the intramolecular NHK reaction to the substrates 8a and 8b containing an ester group adjacent to the reacting aldehyde functionality gave disappointing low yields (<6%) of the corresponding coupled products 9. The synthetic (+)-Z-deoxypukalide 3 was correlated with naturally derived material, and also with pukalide 1, the first member of the furanobutenolide-based cembranoids to be isolated from corals. (C) 2010 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tet.2010.01.059