[(2R)-4-methyl-1-[(4R,5S)-4-methyl-2-oxo-5-phenyl-1,3-oxazolidin-3-yl]-1-oxo-4-triethylsilyloxypentan-2-yl] 3-[(2-methylpropan-2-yl)oxycarbonylamino]propanoate | 383397-40-8

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 二嗪类
• 英文名称: [(2R)-4-methyl-1-[(4R,5S)-4-methyl-2-oxo-5-phenyl-1,3-oxazolidin-3-yl]-1-oxo-4-triethylsilyloxypentan-2-yl] 3-[(2-methylpropan-2-yl)oxycarbonylamino]propanoate
• CAS: 383397-40-8
• 化学式: C₃₀H₄₈N₂O₈Si
• 分子量: 592.805
• InChiKey: LNNGRCDDGMKGIF-GZGNHOFSSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  6.11
• 重原子数：
  41
• 可旋转键数：
  16
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.67
• 拓扑面积：
  121
• 氢给体数：
  1
• 氢受体数：
  8

反应信息

• 作为反应物：
  描述：

  [(2R)-4-methyl-1-[(4R,5S)-4-methyl-2-oxo-5-phenyl-1,3-oxazolidin-3-yl]-1-oxo-4-triethylsilyloxypentan-2-yl] 3-[(2-methylpropan-2-yl)oxycarbonylamino]propanoate 在 lithium hydroxide 作用下， 以75%的产率得到(2R)-4-methyl-2-[3-[(2-methylpropan-2-yl)oxycarbonylamino]propanoyloxy]-4-triethylsilyloxypentanoic acid
  参考文献：
  名称：

  Metabolism of the Host-Selective Toxins Destruxin B and Homodestruxin B:  Probing a Plant Disease Resistance Trait

  摘要：

  [GRAPHICS]Metabolism of the host-selective toxins destruxin B (1) and homodestruxin B (2) by plants resistant and susceptible to Alternaria blackspot (caused by the fungal pathogen Alternaria brassicae (Berk,) Sacc,) was established using synthetic radiolabeied compounds. The toxins are transformed into the less phytotoxic hydroxydestruxins 3 and 4. The rate of metabolic transformation was correlated with the plant's disease resistance, i.e., significantly faster rates were observed for plants resistant to the pathogen, Efficient syntheses of 1, 2, 3, and 4 are described.

  DOI：

  10.1021/ol991042z
• 作为产物：
  描述：

  methyl 4-hydroxy-4-methylpentanoate 在 2,6-二甲基吡啶 、 4-二甲氨基吡啶 、 lithium hydroxide 、 三乙胺 、 N,N'-二环己基碳二亚胺 作用下， 以 四氢呋喃 、 甲醇 、 二氯甲烷 、 水 为溶剂， 反应 53.75h， 生成 [(2R)-4-methyl-1-[(4R,5S)-4-methyl-2-oxo-5-phenyl-1,3-oxazolidin-3-yl]-1-oxo-4-triethylsilyloxypentan-2-yl] 3-[(2-methylpropan-2-yl)oxycarbonylamino]propanoate
  参考文献：
  名称：

  Probing Host-Selective Phytotoxicity:  Synthesis of Destruxin B and Several Natural Analogues

  摘要：

  The syntheses of the host-selective phytotoxin destruxin B [cyclo(beta Ala-Hmp-Pro-Ile-MeVal-MeAla), Hmp = (2R)-2-hydroxy-4-methylpentanoic acid], and the closely related natural analogues homodestruxin B (MeVal --> MeIle), desmethyldestruxin B (MeVal --> Val), hydroxydestruxin B (Hmp --> Dhmp, Dhmp = (2R)-2,4-dihydroxy-4-methylpentanoic acid), and hydroxyhomodestruxin B (MeVal --> MeIle, Hmp-Dhmp) are described. In each case, the MeAla-beta Ala linkage was formed by cyclization and the precursor linear hexadepsipeptides were formed by condensing two three-residue fragments. Radiolabeled samples of destruxin B, homodestruxin B, and hydroxydestruxin B were prepared by coupling [3-C-14]-beta -alanine to the appropriate pentadepsipeptide followed by cyclization. A noteworthy feature of the synthesis involves the novel use of a Boc-hydrazide protecting group on dipeptides with a C-terminal N-methylalanine residue to inhibit the otherwise facile dioxopiperazine formation during peptide coupling.

  DOI：

  10.1021/jo015953+