methyl [2R-(2α,5β,6α)]-6-formyl-5-methyltetrahydro-2H-pyran-2-acetate | 176302-29-7

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 氧烷类
• 英文名称: methyl [2R-(2α,5β,6α)]-6-formyl-5-methyltetrahydro-2H-pyran-2-acetate
• 英文别名: methyl 2-((2R,5S,6S)-6-formyl-5-methyltetrahydro-2H-pyran-2-yl)acetate；methyl 2-[(2R,5S,6S)-6-formyl-5-methyloxan-2-yl]acetate
• CAS: 176302-29-7
• 化学式: C₁₀H₁₆O₄
• 分子量: 200.235
• InChiKey: FUJRUWRVBPEAAI-DJLDLDEBSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  0.8
• 重原子数：
  14
• 可旋转键数：
  4
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.8
• 拓扑面积：
  52.6
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  methyl [2R-(2α,5β,6α)]-6-formyl-5-methyltetrahydro-2H-pyran-2-acetate 在 chromium dichloride 、 盐酸 、 叔丁基过氧化氢 、 四(三苯基膦)钯 、 bis(acetylacetonate)oxovanadium 、 硫酸 、 potassium carbonate 、 caesium carbonate 、 mercury(II) sulfate 、 三甲基氢氧化锡 作用下， 以 四氢呋喃 、 甲醇 、 1,1-二氯乙烷 、 水 、 苯 为溶剂， 反应 14.5h， 生成 3-{[(6,7-二乙氧基-1,2,3,4-四氢萘-2-基)氨基]甲基}-6-(乙烯氧基)环己-2,4-二烯-1-酮盐酸
  参考文献：
  名称：

  A Stereoselective Synthesis of (+)-Herboxidiene/GEX1A

  摘要：

  A stereoselective synthesis of (+)-herboxidiene is described. The convergent synthesis utilized a Suzuki cross-coupling reaction to assemble the key segments. The synthesis of the functionalized tetrahydropyran ring utilized an Achmatowicz reaction as the key step. The synthesis of the C10-C19 segment was accomplished using Brown's crotylboration, asymmetric alkylation, and a stereoselective allylic chlorination reactions.

  DOI：

  10.1021/ol102549a
• 作为产物：
  描述：

  (2S,6S)-2-allyl-6-((tert-butyldimethylsilyloxy)methyl)-2H-pyran-3(6H)-one 在 盐酸 、 4-二甲氨基吡啶 、 platinum(IV) oxide 、 sodium chlorite 、 sodium tetrahydroborate 、 2,6-二叔丁基吡啶 、 sodium dihydrogenphosphate dihydrate 、 二甲基硫 、 偶氮二异丁腈 、 cerium(III) chloride heptahydrate 、 三(三甲基硅基)硅烷 、 氢气 、 diethylzinc 、 戴斯-马丁氧化剂 、 臭氧 、 盐酸-N-乙基-Nˊ-(3-二甲氨基丙基)碳二亚胺 作用下， 以 甲醇 、 2-甲基-2-丁烯 、 正己烷 、 二氯甲烷 、 水 、 甲苯 、 叔丁醇 为溶剂， 反应 16.42h， 生成 methyl [2R-(2α,5β,6α)]-6-formyl-5-methyltetrahydro-2H-pyran-2-acetate
  参考文献：
  名称：

  A Stereoselective Synthesis of (+)-Herboxidiene/GEX1A

  摘要：

  A stereoselective synthesis of (+)-herboxidiene is described. The convergent synthesis utilized a Suzuki cross-coupling reaction to assemble the key segments. The synthesis of the functionalized tetrahydropyran ring utilized an Achmatowicz reaction as the key step. The synthesis of the C10-C19 segment was accomplished using Brown's crotylboration, asymmetric alkylation, and a stereoselective allylic chlorination reactions.

  DOI：

  10.1021/ol102549a

文献信息

• Herboxidiene: Determination of absolute configuration by degradation and synthetic studies
  作者：A.J.F. Edmunds、W. Trueb、W. Oppolzer、P. Cowley

  DOI：10.1016/s0040-4020(97)00021-5

  日期：1997.2

  Degradation of the novel polyketide herbicide herboxidiene leads to useful fragments for further analogue synthesis and also enabled determination of the absolute configuration of the natural product via asymmetric synthesis of the respective fragments.

  新的聚酮化合物除草剂除草二烯的降解导致有用的片段用于进一步的类似物合成，并且还能够通过各个片段的不对称合成来确定天然产物的绝对构型。
• Improved synthetic route to enantiomerically pure samples of the tetrahydropyran-2-ylacetic acid core associated with the phytotoxic polyketide herboxidiene
  作者：Martin G. Banwell、Malcolm D. McLeod、Rajaratnam Premraj、Gregory W. Simpson

  DOI：10.1071/ch00083

  日期：——

  The phosphine oxide (2), which embodies the tetrahydropyran-2-ylacetic acid core associated with the phytotoxic polyketide herboxidiene (1) and which is a key intermediate in a projected synthesis of this natural product, has been prepared in a highly enantio- and diastereo-selective manner. The pivotal steps in this new and improved synthesis of compound (2) involve Katsuki–Sharpless asymmetric epoxidation of the allylic alcohol (4) to give epoxide (7) and subsequent ring-cleavage of the latter compound with trimethylaluminium to give diol (9). The derived acetate (10) is then readily ozonolysed to give the previously reported aldehyde (11), although now in high enantiomeric excess. Compound (11) can be elaborated, by established chemistry, to the target oxide (2).

  氧化膦（2）含有与植物毒性多酮雌脒烯（1）相关的四氢吡喃-2-基乙酸核心，是一种具有植物毒性的多酮雌脒烯（1）。 氧化膦（2）含有与植物毒性多酮herboxidiene（1）相关的四氢吡喃-2-基乙酸核心，是预计合成这种天然产物的关键中间体。 的关键中间体。 以高度对映和非对映选择性的方式制备出来。这种 的关键步骤包括 烯丙基醇 (4) 的 Katsuki-Sharpless 不对称环氧化反应，得到环氧化物 (7)。 得到环氧化物 (7)，随后用三甲基铝对后者进行环裂解，得到二元醇。 三甲基铝进行裂环，得到二元醇 (9)。得到的乙酸酯（10）很容易被 臭氧分解，得到之前报告过的醛 (11)，不过现在对映体过量。 对映体过量。化合物 (11) 可以通过成熟的 化学反应，得到目标氧化物 (2)。
• A Total Synthesis of Herboxidiene Methyl Ester
  作者：Martin G. Banwell、Rajaratnam Premraj、Malcolm D. McLeod、Gregory W. Simpson

  DOI：10.3987/com-12-12597

  日期：——

  The total synthesis of the methyl ester, 35, of herboxidiene (1, a.k.a. GEX1A and TAN-1609), a polyketide displaying both herbicidal and anti-tumor activity, is described. The convergent reaction sequence involves, in its closing stages, the union of the phosphine oxide 3 with the aldehyde 21 to deliver, via a Horner-Wittig reaction with accompanying epimerization at C12, compound 33 that after deprotection affords an alcohol, 34, capable of participating in a regio- and diastereo-selective epoxidation reaction to give target 35. Phosphine oxide 3 was prepared via the intramolecular hetero-Michael addition of a secondary alcohol to a tethered and Z-configured acrylate while aldehyde 21 was generated, in the crucial step of the relevant reaction sequence, via an Ireland-Claisen rearrangement reaction.
• Banwell, Martin G.; Bui, Chinh T.; Simpson, Gregory W., Journal of the Chemical Society. Perkin transactions I, 1998, # 4, p. 791 - 799
  作者：Banwell, Martin G.、Bui, Chinh T.、Simpson, Gregory W.

  DOI：——

  日期：——
• A Stereoselective Synthesis of (+)-Herboxidiene/GEX1A
  作者：Arun K. Ghosh、Jianfeng Li

  DOI：10.1021/ol102549a

  日期：2011.1.7

  A stereoselective synthesis of (+)-herboxidiene is described. The convergent synthesis utilized a Suzuki cross-coupling reaction to assemble the key segments. The synthesis of the functionalized tetrahydropyran ring utilized an Achmatowicz reaction as the key step. The synthesis of the C10-C19 segment was accomplished using Brown's crotylboration, asymmetric alkylation, and a stereoselective allylic chlorination reactions.