erythro-1,2-O-Pentylidenehex-5-en-1,2,3-triol | 169395-83-9

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: erythro-1,2-O-Pentylidenehex-5-en-1,2,3-triol
• 英文别名: (4S,5R)-5,6-O-pentylidene-4-hydroxy-5,6-bis-alkoxy-1-hexene；(1S)-1-[(4R)-2,2-diethyl-1,3-dioxolan-4-yl]but-3-en-1-ol
• CAS: 169395-83-9
• 化学式: C₁₁H₂₀O₃
• 分子量: 200.278
• InChiKey: PBWVFAROHKTTFK-VHSXEESVSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2
• 重原子数：
  14
• 可旋转键数：
  5
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.82
• 拓扑面积：
  38.7
• 氢给体数：
  1
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  erythro-1,2-O-Pentylidenehex-5-en-1,2,3-triol 在 吡啶 、 2,6-二甲基吡啶 、 叔丁基二甲硅基三氟甲磺酸酯 、 水 、 potassium hydrogencarbonate 、 戴斯-马丁氧化剂 、 对甲苯磺酸 、 臭氧 、 丙酸 、 三苯基膦 作用下， 以 四氢呋喃 、 甲醇 、 二氯甲烷 、 水 、 甲苯 为溶剂， 反应 58.75h， 生成 methyl (4E,7S,8R)-7-[(6-deoxy-2,3,4-trimethyl-O-methyl-α-L-mannopyranosyl)oxy]-8-(tert-butyldimethylsilyloxy)-10,10-dibromo-deca-4,9-dienoate
  参考文献：
  名称：

  （-）-spinosyn的合成研究：在立体环状Diels-Alder反应中应用空间导向基团策略。

  摘要：

  据报道，（-）-多杀菌素A（1）的十氢化物为茚并二烯核12的高度非对映选择性和对映选择性合成。通过实施空间方向群策略，由内酯9的非对映选择性的跨环Diels-Alder反应产生了三环内酯37。然后，使用Ireland-Claisen环收缩37获得了天然产物的三环核。这两个步骤的顺序导致非对映选择性几乎完全丧失。

  DOI：

  10.1021/jo025580s
• 作为产物：
  描述：

  ((4R,5S)-5-Allyl-2,2-diethyl-[1,3]dioxolan-4-yl)-methanol 在 TrBF₄ 作用下， 以 乙醚 为溶剂， 反应 14.0h， 生成 erythro-1,2-O-Pentylidenehex-5-en-1,2,3-triol
  参考文献：
  名称：

  （-）-spinosyn的合成研究：在立体环状Diels-Alder反应中应用空间导向基团策略。

  摘要：

  据报道，（-）-多杀菌素A（1）的十氢化物为茚并二烯核12的高度非对映选择性和对映选择性合成。通过实施空间方向群策略，由内酯9的非对映选择性的跨环Diels-Alder反应产生了三环内酯37。然后，使用Ireland-Claisen环收缩37获得了天然产物的三环核。这两个步骤的顺序导致非对映选择性几乎完全丧失。

  DOI：

  10.1021/jo025580s

文献信息

• N,N'-Bis(2,2,2-trifluoroethyl)-N,N'-ethylenetartramide: An Improved Chiral Auxiliary for the Asymmetric Allylboration Reaction
  作者：William R. Roush、Paul T. Grover

  DOI：10.1021/jo00117a036

  日期：1995.6

  N,N-Bis(2,2,2-trifluoroethyl)-N,N'-ethylenetartramide (8), synthesized by a simple four-step sequence from ethylenediamine and benzylidenetartaric acid, was designed in anticipation that the derived allylboronates 9-11 would display enhanced reactivity owing to the inductive effect of the N-trifluoroethyl substituents that would increase the Lewis acidity of the boron atom of the B-allyl-1,3,2-dioxaborolanes. Reagents 9-11 were synthesized by transesterification of 8 with the crystalline and easily purified allylboronate diethanolamine complexes 13, 19, and 25. Allylboronate 9 is ca. 100-fold more reactive than 6 and is also substantially more useful than the previously reported allyboronate 4, which suffers from very poor solubility in toluene at -78 degrees C. Most importantly, allylboronates 9-11 are significantly more enantioselective than the parent tartrate allylboronates 1-3 and rank among the most highly enantioselective allylboron reagents yet reported. Reactions of 9-11 with aldehydes are performed in THF at- -78 or -55 degrees C for 5-12 h periods. The enantioselectivity realized in reactions with achiral aldehydes is 92-95% ee (Table 2), and excellent diastereoselectivity is achieved in double asymmetric reactions with chiral aldehydes 15a, 15b, and 33 (Tables 3 and 4). For example, 16 and 28 are now available with a minimum selectivity of 92% from reactions of 15a and 15b with allylboronate 9, while the crotylboration products 29, 30, and 31 are available with a minimum selectivity of 90% (usually greater than or equal to 95%) from reactions of 15a and 15b with crotylboronates 10 and 11; the fourth isomer, 32a, is available with 83% selectivity. Chiral reagents 9-11 thus appear well suited for application to complex problems in organic synthesis.
• Studies on the Synthesis of (−)-Spinosyn A:  Application of the Steric Directing Group Strategy to Transannular Diels−Alder Reactions
  作者：Scott A. Frank、William R. Roush

  DOI：10.1021/jo025580s

  日期：2002.6.1

  highly diastereoselective and enantioselective synthesis of the decahydro-as-indacene nucleus 12 of (-)-spinosyn A (1) is reported. By implementing the steric directing group strategy, tricyclic lactone 37 was produced from a remarkably diastereoselective transannular Diels-Alder reaction of lactone 9. The tricyclic core of the natural product was then obtained by using an Ireland-Claisen ring contraction

  据报道，（-）-多杀菌素A（1）的十氢化物为茚并二烯核12的高度非对映选择性和对映选择性合成。通过实施空间方向群策略，由内酯9的非对映选择性的跨环Diels-Alder反应产生了三环内酯37。然后，使用Ireland-Claisen环收缩37获得了天然产物的三环核。这两个步骤的顺序导致非对映选择性几乎完全丧失。