(R)-(-)-1-benzyloxy-2,5-pentanediol | 93381-43-2

• 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: (R)-(-)-1-benzyloxy-2,5-pentanediol
• 英文别名: (R)-5-(benzyloxy)pentane-1,4-diol；(4R)-5-(Phenylmethoxy)-1,4-pentanediol；(4R)-5-phenylmethoxypentane-1,4-diol
• CAS: 93381-43-2
• 化学式: C₁₂H₁₈O₃
• 分子量: 210.273
• InChiKey: JBTLFIIYVNDDEK-GFCCVEGCSA-N

物化性质

• 沸点：
  362.0±32.0 °C(Predicted)
• 密度：
  1.106±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  1
• 重原子数：
  15
• 可旋转键数：
  7
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.5
• 拓扑面积：
  49.7
• 氢给体数：
  2
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  (R)-(-)-1-benzyloxy-2,5-pentanediol 在 palladium dihydroxide 、 palladium on activated charcoal 、 4 A molecular sieve 咪唑 、 chromium dichloride 、 titanium(IV) isopropylate 、 三乙基硅烷 、 叔丁基过氧化氢 、 manganese(IV) oxide 、 pyridine-SO3 complex 、 D-(-)-酒石酸二乙酯 、 三氟甲磺酸三甲基硅酯 、 三氟化硼乙醚 、 四丁基氟化铵 、 氢气 、 二异丁基氢化铝 、 碳酸氢钠 、 potassium carbonate 、 戴斯-马丁氧化剂 、 三乙胺 、 三苯基膦 、 nickel dichloride 作用下， 以 四氢呋喃 、 甲醇 、 乙醚 、 癸烷 、 正己烷 、 二氯甲烷 、 二甲基亚砜 、 乙酸乙酯 、 N,N-二甲基甲酰胺 、 苯 为溶剂， -78.0~20.0 ℃ 、101.33 kPa 条件下， 反应 68.2h， 生成 (+)-Thyrsiferol
  参考文献：
  名称：

  Total Synthesis of Thyrsiferyl 23-Acetate, a Specific Inhibitor of Protein Phosphatase 2A and an Anti-Leukemic Inducer of Apoptosis

  摘要：

  A convergent synthetic entry to the squalenoid polyether system has been developed and applied to the biologically active marine natural products thyrsiferyl 23-acetate (la), thyrsiferol (Ib), thyrsiferyl 18-acetate (Ic), and thyrsiferyl 18,23-diacetate (Id). This involved the separate construction of two advanced intermediates representing the C1-C15 (4) and C16-C24 (5) domains, followed by their organochromium-mediated coupling, installation of the tertiary alcohol at C15, and manipulation of the C18 and C23 acetate moieties. The C1-C15 (4) intermediate containing the three tetrahydropyranyl rings (A-B-C) was derived from two preconstructed tetrahydropyran-containing units representing the functionalized A (C2-C6) and C (C10-C14) rings (6 and 7, respectively). The bromotetrahydropyranyl A ring was obtained via bromoetherification of the hydroxyalkene 16, which was synthesized from (2R,3R)-epoxy geraniol. The C ring was stereoselectively constructed by acid-catalyzed opening of the hydroxy epoxide 32, derived from D-glutamic acid. Intermediates 6 and 7 were-joined using organochromium conditions, and ketone and hydroxyl functionalities were installed at carbons:7 and 11, respectively. Closure of the B ring was accomplished stereoselectively by formation of species derived from a C7, C11 keto-alcohol and in situ reduction of a tetrahydropyranyl oxonium. The complementary tetrahydrofuran D (C19-C22) ring was obtained from a geraniol-derived tertiary hydroxy alkene (44) via a stereoselective Re(VII)-induced syn-oxidative cyclization. The side chain appended to the D ring was elaborated into trans-alkenyl iodide 5 under Takai reaction conditions. CrCl2-mediated coupling of aldehyde 4 containing the secondary bromide at C3 of the natural products, with iodide 5 bearing acetate moieties at C18 and C23, installed the C15-C16 carbon-carbon bond. The resultant C15 allylic carbinol was converted into an cr,P-saturated ketone, and the final methyl group was added stereoselectively using methylmagnesium bromide. Saponification of the C18 acetate yielded la, whereas cleavage of both C18 and C23 acetates gave the triol Ib. This modular entry into the squalenoid-polyether system may facilitate further evaluation of the antileukemic, apoptosis-inducing, protein serine/threonine phosphatase 2A inhibitory and anti-multidrug resistance activities of the thyrsiferol-derived natural products.

  DOI：

  10.1021/ja000001r
• 作为产物：
  描述：

  (R)-γ-羟甲基-γ-丁内酯 (R)-4,5-二氢-5-羟甲基-2(3H)-呋喃酮 (R)-5-羟甲基-2-氧代四氢呋喃 在 三氟甲磺酸 、 二异丁基氢化铝 作用下， 以 二氯甲烷 、 甲苯 、 正戊烷 为溶剂， 反应 1.5h， 生成 (R)-(-)-1-benzyloxy-2,5-pentanediol
  参考文献：
  名称：

  Total Synthesis of Thyrsiferyl 23-Acetate, a Specific Inhibitor of Protein Phosphatase 2A and an Anti-Leukemic Inducer of Apoptosis

  摘要：

  A convergent synthetic entry to the squalenoid polyether system has been developed and applied to the biologically active marine natural products thyrsiferyl 23-acetate (la), thyrsiferol (Ib), thyrsiferyl 18-acetate (Ic), and thyrsiferyl 18,23-diacetate (Id). This involved the separate construction of two advanced intermediates representing the C1-C15 (4) and C16-C24 (5) domains, followed by their organochromium-mediated coupling, installation of the tertiary alcohol at C15, and manipulation of the C18 and C23 acetate moieties. The C1-C15 (4) intermediate containing the three tetrahydropyranyl rings (A-B-C) was derived from two preconstructed tetrahydropyran-containing units representing the functionalized A (C2-C6) and C (C10-C14) rings (6 and 7, respectively). The bromotetrahydropyranyl A ring was obtained via bromoetherification of the hydroxyalkene 16, which was synthesized from (2R,3R)-epoxy geraniol. The C ring was stereoselectively constructed by acid-catalyzed opening of the hydroxy epoxide 32, derived from D-glutamic acid. Intermediates 6 and 7 were-joined using organochromium conditions, and ketone and hydroxyl functionalities were installed at carbons:7 and 11, respectively. Closure of the B ring was accomplished stereoselectively by formation of species derived from a C7, C11 keto-alcohol and in situ reduction of a tetrahydropyranyl oxonium. The complementary tetrahydrofuran D (C19-C22) ring was obtained from a geraniol-derived tertiary hydroxy alkene (44) via a stereoselective Re(VII)-induced syn-oxidative cyclization. The side chain appended to the D ring was elaborated into trans-alkenyl iodide 5 under Takai reaction conditions. CrCl2-mediated coupling of aldehyde 4 containing the secondary bromide at C3 of the natural products, with iodide 5 bearing acetate moieties at C18 and C23, installed the C15-C16 carbon-carbon bond. The resultant C15 allylic carbinol was converted into an cr,P-saturated ketone, and the final methyl group was added stereoselectively using methylmagnesium bromide. Saponification of the C18 acetate yielded la, whereas cleavage of both C18 and C23 acetates gave the triol Ib. This modular entry into the squalenoid-polyether system may facilitate further evaluation of the antileukemic, apoptosis-inducing, protein serine/threonine phosphatase 2A inhibitory and anti-multidrug resistance activities of the thyrsiferol-derived natural products.

  DOI：

  10.1021/ja000001r

文献信息

• Total Synthesis and Determination of the Absolute Configuration of Guadinomines B and C₂
  作者：Tomoyasu Hirose、Toshiaki Sunazuka、Satoshi Tsuchiya、Toshiaki Tanaka、Yasuhiro Kojima、Ryuma Mori、Masato Iwatsuki、Satoshi Ōmura

  DOI：10.1002/chem.200801024

  日期：2008.9.19

  describes the determination of the absolute configurations of the guadinomines, which are novel cyclic guanidyl natural products that are inhibitors of the type III secretion system (TTSS) of bacteria. Any compound that interrupts the TTSS of bacteria is potentially an ideal anti-infectious drug. The reliable asymmetric synthesis of guadinomines has revealed their absolute configurations, which could

  本文介绍了胍基亚胺的绝对构型的测定，其是细菌的III型分泌系统（TTSS）抑制剂的新型环状胍基天然产物。任何会中断细菌TTSS的化合物都可能是理想的抗感染药。可靠的不对称合成胍基亚胺揭示了它们的绝对构型，如果没有这种合成方法就无法确定。我们的报告不仅描述了标题化合物的不对称全合成，而且还证明了三取代的哌嗪酮核的新颖简明合成方法为光学纯形式。我们的方法的新功能是分子内S（N）2环化，使用PPh（3）和I（2）构造独特的5元环胍亚结构。
• Drug Delivery by an Enzyme-Mediated Cyclization of a Lipid Prodrug with Unique Bilayer-Formation Properties
  作者：Lars Linderoth、Günther H. Peters、Robert Madsen、Thomas L. Andresen

  DOI：10.1002/anie.200805241

  日期：2009.2.23

  Special delivery: Liposomal drug‐delivery systems in which prodrugs are activated specifically by disease‐associated enzymes have great potential for the treatment of severe diseases, such as cancer. A new type of phospholipid‐based prodrug has the ability to form stable small unilamellar vesicles (see picture). Activation of the prodrug vesicles by the enzyme sPLA2 initiates a cyclization reaction

  特殊递送：脂质体药物递送系统中的前药被疾病相关的酶特异性激活，在治疗严重疾病（如癌症）方面具有巨大潜力。一种新型的磷脂基前药具有形成稳定的单层小囊泡的能力（见图）。sPLA 2酶激活前药囊泡会引发环化反应，从而导致药物释放。
• Reductive ring openings of allyl-alcohol epoxides
  作者：James M. Finan、Yoshito Kishi

  DOI：10.1016/s0040-4039(00)87440-7

  日期：——

  Red-Al reduction of allyl-alcohol epoxides was shown to yield 1,3-diols in high regioselectivity, while DIBAL reduction was shown to yield 1,2-diols.

  烯丙醇环氧化物的Red-Al还原显示出高区域选择性，可生成1,3-二醇，而DIBAL还原显示可生成1,2-二醇。
• Total synthesis of marine prostanoids clavulones
  作者：Hiroto Nagaoka、Tohru Miyakoshi、Yasuji Yamada

  DOI：10.1016/s0040-4039(01)91091-3

  日期：1984.1
• Synthesis of clavulones (claviridenones)
  作者：Shinsuke Hashimoto、Yoshinobu Arai、Nobuyuki Hamanaka

  DOI：10.1016/s0040-4039(00)98135-8

  日期：1985.1