benzyl 2-((2R,6S)-6-((S)-2-(benzyloxy)-4-oxobutyl)tetrahydro-2H-pyran-2-yl)-2-methylpropanoate | 864498-77-1

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: benzyl 2-((2R,6S)-6-((S)-2-(benzyloxy)-4-oxobutyl)tetrahydro-2H-pyran-2-yl)-2-methylpropanoate
• 英文别名: benzyl 2-methyl-2-[(2R,6S)-6-[(2S)-4-oxo-2-phenylmethoxybutyl]oxan-2-yl]propanoate
• CAS: 864498-77-1
• 化学式: C₂₇H₃₄O₅
• 分子量: 438.564
• InChiKey: YTYLRMIVGGUNAY-DSNGMDLFSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.5
• 重原子数：
  32
• 可旋转键数：
  12
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.48
• 拓扑面积：
  61.8
• 氢给体数：
  0
• 氢受体数：
  5

反应信息

• 作为反应物：
  描述：

  benzyl 2-((2R,6S)-6-((S)-2-(benzyloxy)-4-oxobutyl)tetrahydro-2H-pyran-2-yl)-2-methylpropanoate 在 acetylacetonatodicarbonylrhodium(l) 四丁基氟化铵 作用下， 以 四氢呋喃 、 二氯甲烷 、 苯 为溶剂， 反应 43.0h， 生成 benzyl 2-[(2R,6S)-6-[(2R,4R,5S,8R)-4,8-dihydroxy-5-methyl-2-phenylmethoxyundec-10-enyl]oxan-2-yl]-2-methylpropanoate
  参考文献：
  名称：

  Efficient Asymmetric Synthesis of (+)-SCH 351448

  摘要：

  An efficient and stereocontrolled total synthesis of (+)-SCH 351448, a novel activator of low-density lipoprotein receptor promoter, has been achieved with a longest linear sequence of 21 steps. Key steps include applications of the recently developed asymmetric allyl- and crotylsilane reagents and a new protodesilylative version of the tandem silylformylation/allyisilylation reaction, which provides an efficient synthesis of 1,5-syn-diols.

  DOI：

  10.1021/ol0515006
• 作为产物：
  描述：

  (2R,3S)-3-(dimethyl(phenyl)silyl)-2-((trimethylsilyl)oxy)pent-4-en-1-yl 2,4,6-trimethylbenzenesulfonate 在 吡啶 、 sodium chlorite 、 sodium periodate 、 sodium dihydrogenphosphate 、 四氧化锇 、 2-甲基-2-丁烯 、 草酰氯 、 sodium hypophosphite monohydrate 、 三氟甲磺酸三甲基硅酯 、 palladium 10% on activated carbon 、 水 、 氢气 、 sodium hydride 、 二甲基亚砜 、 N-甲基吗啉氧化物 、 1,8-二氮杂双环[5.4.0]十一碳-7-烯 作用下， 以 四氢呋喃 、 甲醇 、 乙醚 、 二氯甲烷 、 水 、 溶剂黄146 、 N,N-二甲基甲酰胺 、 丙酮 、 乙腈 、 叔丁醇 、 苯 为溶剂， 反应 95.83h， 生成 benzyl 2-((2R,6S)-6-((S)-2-(benzyloxy)-4-oxobutyl)tetrahydro-2H-pyran-2-yl)-2-methylpropanoate
  参考文献：
  名称：

  Total Synthesis of (+)-SCH 351448

  摘要：

  A convergent synthesis of (+)-SCH 351448 (1), a monosodium salt of a C-2-symmetric macrodiolide, is described. Our approach is based on a [4 + 2] annulation with a chiral allyl silane (anti-5c) to assemble the pyran subunits. Homodimerization was carried out in a stepwise fashion; initial esterification at C29' followed by macrocyclization at C29 afforded the desired macrodiolide.

  DOI：

  10.1021/ol201863b

文献信息

• Total Synthesis of (+)-SCH 351448: Efficiency via Chemoselectivity and Redox-Economy Powered by Metal Catalysis
  作者：Gang Wang、Michael J. Krische

  DOI：10.1021/jacs.6b04917

  日期：2016.7.6

  The polyketide natural product (+)-SCH 351448, a macrodiolide ionophore bearing 14 stereogenic centers, is prepared in 14 steps (LLS). In eight prior syntheses, 22-32 steps were required. Multiple chemoselective and redox-economic functional group interconversions collectively contribute to a step-change in efficiency.
• Efficient Asymmetric Synthesis of (+)-SCH 351448
  作者：Sergei Bolshakov、James L. Leighton

  DOI：10.1021/ol0515006

  日期：2005.8.1

  An efficient and stereocontrolled total synthesis of (+)-SCH 351448, a novel activator of low-density lipoprotein receptor promoter, has been achieved with a longest linear sequence of 21 steps. Key steps include applications of the recently developed asymmetric allyl- and crotylsilane reagents and a new protodesilylative version of the tandem silylformylation/allyisilylation reaction, which provides an efficient synthesis of 1,5-syn-diols.
• Total Synthesis of (+)-SCH 351448
  作者：Kaicheng Zhu、James S. Panek

  DOI：10.1021/ol201863b

  日期：2011.9.2

  A convergent synthesis of (+)-SCH 351448 (1), a monosodium salt of a C-2-symmetric macrodiolide, is described. Our approach is based on a [4 + 2] annulation with a chiral allyl silane (anti-5c) to assemble the pyran subunits. Homodimerization was carried out in a stepwise fashion; initial esterification at C29' followed by macrocyclization at C29 afforded the desired macrodiolide.