(-)-(R)-5-Phenyl-2-methylpentanal | 156767-45-2

• 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)-5-Phenyl-2-methylpentanal
• 英文别名: (2R)-2-methyl-5-phenylpentan-1-al；(R)-2-methyl-5-phenyl-pentanal；(2R)-2-methyl-5-phenylpentanal
• CAS: 156767-45-2
• 化学式: C₁₂H₁₆O
• 分子量: 176.258
• InChiKey: AHSQPFFBBHOZGR-LLVKDONJSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.1
• 重原子数：
  13
• 可旋转键数：
  5
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.42
• 拓扑面积：
  17.1
• 氢给体数：
  0
• 氢受体数：
  1

反应信息

• 作为反应物：
  描述：

  (-)-(R)-5-Phenyl-2-methylpentanal 在 二甘醇酸 、 4-二甲氨基吡啶 、 sodium hydroxide 、 N,N'-二环己基碳二亚胺 、 三氟乙酸 作用下， 以 四氢呋喃 、 二氯甲烷 为溶剂， 反应 56.0h， 生成 (+)-zaragozic acid
  参考文献：
  名称：

  (+)-Zaragozic Acid C: Synthesis and Related Studies

  摘要：

  The asymmetric synthesis of the potent squalene synthase inhibitor (+)-zaragozic acid C is described. The synthesis allows for the preparation of multigram quantities of the dioxabicyclooctane core common to all members of this class of fungal metabolites. Supporting studies include (1) the use of [Cr(OAc)(2) . H2O](2) for the stereoselective reduction of ynones to trans enones, (2) an investigation of the diastereoselective dihydroxylation of gamma-alkoxy-alpha,beta-trans trans enones, and (3) nucleophilic addition of Me(3)SiC equivalent to CLi to a dioxabicyclooctanone, wherein the product diastereoselectivity is observed to vary as a function of cosolvents (tertiary amines) and additives (LiBr). In addition, an acylation protocol is reported which permits the regioselective installation of the C(6) O-acyl side chain.

  DOI：

  10.1021/ja00136a008
• 作为产物：
  描述：

  Cinnamyl bromide 在 palladium on activated charcoal lithium aluminium tetrahydride 、 草酰氯 、 氢气 、 sodium hexamethyldisilazane 、 二甲基亚砜 、 三乙胺 作用下， 以 四氢呋喃 、 乙酸乙酯 为溶剂， -78.0~25.0 ℃ 、275.79 kPa 条件下， 反应 13.5h， 生成 (-)-(R)-5-Phenyl-2-methylpentanal
  参考文献：
  名称：

  Absolute Stereochemistry of the Squalene Synthase Inhibitor Zaragozic Acid C

  摘要：

  DOI：

  10.1021/jo00087a054

文献信息

• “One-Pot” Reductive Lactone Alkylation Provides a Concise Asymmetric Synthesis of Chiral Isoprenoid Targets
  作者：Jia Cao、Patrick Perlmutter

  DOI：10.1021/ol401801g

  日期：2013.9.6

  An efficient method, based on nucleophilic addition to lactones followed by modified in situ Clemmensen reduction, provides a short synthetic route to chiral isoprenoid targets. The efficacy of this method has been exemplified through the synthesis of several targets including the commercial fragrance Rosaphen, the side chain of Zaragozic acid C, the cotton leaf sex pheromone, and the side chains of

  一种有效的方法，基于向内酯的亲核加成，然后进行修饰的原位Clemmensen还原，为合成手性类异戊二烯靶标提供了一条简短的合成途径。该方法的功效已通过几种靶标的合成得到了证明，其中包括商业香料罗莎芬，扎拉果酸C的侧链，棉叶性信息素和维生素E的侧链。
• Self-Consistent Synthesis of the Squalene Synthase Inhibitor Zaragozic Acid C via Controlled Oligomerization
  作者：David A. Nicewicz、Andrew D. Satterfield、Daniel C. Schmitt、Jeffrey S. Johnson

  DOI：10.1021/ja808347q

  日期：2008.12.24

  Despite the prevalence of repeating subunits in chiral natural products, stereocontrolled oligomerization is a largely unexplored strategy for construction of carbon skeletal frameworks. This report describes the use of silyl glyoxylates as dipolar glycolic acid synthons in a controlled oligomerization reaction for the efficient construction of the squalene synthase inhibitor zaragozic acid C. This

  尽管手性天然产物中重复亚基很普遍，但立体控制的低聚化在很大程度上是一种尚未开发的碳骨架构建策略。本报告描述了在受控低聚反应中使用甲硅烷基乙醛酸作为偶极乙醇酸合成子，以有效构建角鲨烯合酶抑制剂 zaragozic 酸 C。这种新方法允许快速、立体控制地形成具有理想保护基团方案的碳骨架，同时最大限度地减少官能团修复和氧化态操作。
• Diastereoselective protonation of dienols: a formal approach to zaragozic acid C side chain
  作者：Sébastien Comesse、Olivier Piva

  DOI：10.1016/s0957-4166(99)00102-0

  日期：1999.3

  The 2-methyl 5-phenylpropanal precursor of the side chain of zaragozic acid C has been prepared in 83% ee through the diastereoselective protonation of a photodienol generated in situ by irradiation of an alpha, beta-unsaturated ester, bearing, as a chiral moiety, the diacetone D-glucose group. (C) 1999 Elsevier Science Ltd. All rights reserved.
• Absolute Stereochemistry of the Squalene Synthase Inhibitor Zaragozic Acid C
  作者：Conrad Santini、Richard G. Ball、Gregory D. Berger

  DOI：10.1021/jo00087a054

  日期：1994.4
• (+)-Zaragozic Acid C: Synthesis and Related Studies
  作者：Erick M. Carreira、J. Du Bois

  DOI：10.1021/ja00136a008

  日期：1995.8

  The asymmetric synthesis of the potent squalene synthase inhibitor (+)-zaragozic acid C is described. The synthesis allows for the preparation of multigram quantities of the dioxabicyclooctane core common to all members of this class of fungal metabolites. Supporting studies include (1) the use of [Cr(OAc)(2) . H2O](2) for the stereoselective reduction of ynones to trans enones, (2) an investigation of the diastereoselective dihydroxylation of gamma-alkoxy-alpha,beta-trans trans enones, and (3) nucleophilic addition of Me(3)SiC equivalent to CLi to a dioxabicyclooctanone, wherein the product diastereoselectivity is observed to vary as a function of cosolvents (tertiary amines) and additives (LiBr). In addition, an acylation protocol is reported which permits the regioselective installation of the C(6) O-acyl side chain.