Tetronomycin Na salt

• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 异戊烯醇脂质
• 英文名称: Tetronomycin Na salt
• 英文别名: sodium;4-[(2R)-2-[(1R,2R,6S)-2-[(E)-3-hydroxy-2-[(2S,3S,6R)-6-[(E)-3-[(2S,5S)-5-[(1R)-1-methoxyethyl]oxolan-2-yl]prop-1-enyl]-3-methyloxan-2-yl]prop-1-enyl]-6-methylcyclohexyl]propanoyl]-2-methylidene-5-oxofuran-3-olate
• 化学式: C₃₄H₄₉O₈*Na
• 分子量: 608.748
• InChiKey: PYNSBUJNGRHFPI-REIOUMPOSA-M

计算性质

• 辛醇/水分配系数(LogP)：
  1.56
• 重原子数：
  43
• 可旋转键数：
  11
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.71
• 拓扑面积：
  114
• 氢给体数：
  1
• 氢受体数：
  8

反应信息

• 作为产物：
  描述：

  3,4-二-O-乙酰-1,5-酐-2,6-双脱氧-L-阿拉伯-己-1-糖醇 在 palladium on activated charcoal 吡啶 、 咪唑 、 4-二甲氨基吡啶 、 N,N-二甲基丙烯基脲 、 sodium chlorite 、 sodium dihydrogenphosphate 、 2-甲基-2-丁烯 、 草酰氯 、 4 A molecular sieve 、 硫酸 、 三氟化硼乙醚 、 氢氟酸 、 四丁基氟化铵 、 水 、 氢气 、 sodium hydride 、 二异丁基氢化铝 、 碳酸氢钠 、 mercury(II) sulfate 、 二甲基亚砜 、 1,8-二氮杂双环[5.4.0]十一碳-7-烯 、 三乙胺 、 pyridinium chlorochromate 、 lithium chloride 、 lithium diisopropyl amide 作用下， 以 四氢呋喃 、 甲醇 、 乙醚 、 正己烷 、 二氯甲烷 、 乙酸乙酯 、 N,N-二甲基甲酰胺 、 甲苯 、 乙腈 、 叔丁醇 为溶剂， 反应 122.89h， 生成 Tetronomycin Na salt
  参考文献：
  名称：

  Total synthesis of tetronomycin

  摘要：

  The first total synthesis of (+)-tetronomycin (1), a novel tetronic acid ionophore antibiotic, has been achieved through the synthesis and assemblage of the four cyclic segments 4, 5, 7, and 8. Construction of the C5-C-13 cyclohexyl portion 5 involves as the key step either a Beckmann fragmentation of the bicyclic ketone oxime 45 or an L-Selectride-mediated reductive annulation of the nona-2,7-dienoate 53. The C-14-C28 polyether fragment 6 was constructed by a BF3-catalyzed coupling reaction of the C-14-C22 allylsilane 7 and the C23-C28 tetrahydrofuran 8 which were derived, respectively, from L-ascorbic acid or (R)-3-hydroxyisobutyrate and L-rhamnal. The union of 5 and 6 by an aldol condensation, followed by photoisomerization of the derived diastereomeric alpha,beta-unsaturated esters, provided (Z)-61, which was converted to the aldehyde 63. Subsequent acylation of the tetronate 4 with 63 via an aldol reaction-oxidation sequence afforded the protected tetronomycin 64. Final deprotection provided synthetic tetronomycin, which was characterized as its sodium salt.

  DOI：

  10.1021/jo00036a026

文献信息

• Total synthesis of tetronomycin
  作者：Kozo Hori、Naotsuka Hikage、Atsushi Inagaki、Shuho Mori、Keiichi Nomura、Eiichi Yoshii

  DOI：10.1021/jo00036a026

  日期：1992.5

  The first total synthesis of (+)-tetronomycin (1), a novel tetronic acid ionophore antibiotic, has been achieved through the synthesis and assemblage of the four cyclic segments 4, 5, 7, and 8. Construction of the C5-C-13 cyclohexyl portion 5 involves as the key step either a Beckmann fragmentation of the bicyclic ketone oxime 45 or an L-Selectride-mediated reductive annulation of the nona-2,7-dienoate 53. The C-14-C28 polyether fragment 6 was constructed by a BF3-catalyzed coupling reaction of the C-14-C22 allylsilane 7 and the C23-C28 tetrahydrofuran 8 which were derived, respectively, from L-ascorbic acid or (R)-3-hydroxyisobutyrate and L-rhamnal. The union of 5 and 6 by an aldol condensation, followed by photoisomerization of the derived diastereomeric alpha,beta-unsaturated esters, provided (Z)-61, which was converted to the aldehyde 63. Subsequent acylation of the tetronate 4 with 63 via an aldol reaction-oxidation sequence afforded the protected tetronomycin 64. Final deprotection provided synthetic tetronomycin, which was characterized as its sodium salt.