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(1R,3S,4S)-3,4-dihydro-4-hydroxy-1,3-dimethylbenzo[c]pyran-5,8-quinone

中文名称
——
中文别名
——
英文名称
(1R,3S,4S)-3,4-dihydro-4-hydroxy-1,3-dimethylbenzo[c]pyran-5,8-quinone
英文别名
(1R,3S,4S)-3,4-dihydro-1,3-dimethyl-4-hydroxy-2-benzopyran;(1R,3S,4S)-4-hydroxy-1,3-dimethyl-3,4-dihydro-1H-isochromene-5,8-dione
(1R,3S,4S)-3,4-dihydro-4-hydroxy-1,3-dimethylbenzo[c]pyran-5,8-quinone化学式
CAS
——
化学式
C11H12O4
mdl
——
分子量
208.214
InChiKey
HSIIBIYKFWINAF-LJNABYEQSA-N
BEILSTEIN
——
EINECS
——
  • 物化性质
  • 计算性质
  • ADMET
  • 安全信息
  • SDS
  • 制备方法与用途
  • 上下游信息
  • 反应信息
  • 文献信息
  • 表征谱图
  • 同类化合物
  • 相关功能分类
  • 相关结构分类

计算性质

  • 辛醇/水分配系数(LogP):
    -0.5
  • 重原子数:
    15
  • 可旋转键数:
    0
  • 环数:
    2.0
  • sp3杂化的碳原子比例:
    0.45
  • 拓扑面积:
    63.6
  • 氢给体数:
    1
  • 氢受体数:
    4

反应信息

点击查看最新优质反应信息

文献信息

  • The Diastereoselective Syntheses of Enantiopure Benzo- and Naphtho-pyrans Related to the Aphid Insect Pigments
    作者:Robin G. F. Giles
    DOI:10.1071/ch03286
    日期:——
    quinone A′, natural derivatives of the aphid insect pigments protoaphin-fb and protoaphin-sl. These are achieved through intramolecular diastereoselective cyclization of tethered phenolic lactaldehydes. The conformational implications of the cyclization process are discussed. Model reactions allow the formulation of a more concise, convergent route to these natural derivatives through the corresponding
    概述了针对对映体纯醌 A 和醌 A'(蚜虫色素 protoaphin-fb 和 protoaphin-sl 的天然衍生物)组装的合成努力。这些是通过束缚酚醛乳醛的分子内非对映选择性环化来实现的。讨论了环化过程的构象含义。模型反应允许通过相应的分子间反应为这些天然衍生物制定更简洁、收敛的路线,其中所需的互补非对映选择性是通过选择苯酚钛或镁与乙氧基乙基保护的不对称乳醛反应来提供的。
  • Stereoselective isomerisations of 4-(2′,5′-dimethoxyphenyl)-2,5-dimethyl-1,3-dioxolanes and their 2′-chloro-5′-methoxyphenyl analogues. Temperature-dependent diastereoselective formation of isochromanes
    作者:Robin G. F. Giles、Rodney W. Rickards、Badra S. Senanayake
    DOI:10.1039/a704543c
    日期:——
    Stereoselective isomerisations of rel-(2R,4S,5R)-4-(2′,5′-dimethoxyphenyl)-2,5-dimethyl-1,3-dioxolane 1 and the 2∶1 epimeric mixture of rel-(2S,4R,5R)- and rel-(2R,4R,5R)-4-(2′,5′-dimethoxyphenyl)-2,5-dimethyl-1,3-dioxolanes 2 and 3 with titanium tetrachloride at –78 °C afford rel-(1R,3R,4S)- and rel-(1S,3R,4R)-4-hydroxy-5,8-dimethoxy-1,3-dimethylisochromanes 25 and 30, respectively. The yields are only moderate owing to the competing influence of the 2′-methoxy group in the starting dioxolanes, and are improved significantly when this group is replaced by a 2′-chloro substituent. rel-(2R,4S,5R)-4-(2′-Chloro-5′-methoxyphenyl)-2,5-dimethyl-1,3-dioxolane 13 under similar conditions is isomerised smoothly to rel-(1R,3R,4S)-5-chloro-4-hydroxy-8-methoxy-1,3-dimethylisochromane 34 as the sole reaction product. In contrast the C-2 epimers rel-(2R,4R,5R)- and rel-(2S,4R,5R)-4-(2′-chloro-5′-methoxyphenyl)-2,5-dimethyl-1,3-dioxolanes 14 and 15 each favour the formation of rel-(1R,3R,4R)-5-chloro-4-hydroxy-8-methoxy-1,3-dimethylisochromane 36 at –78 °C, while at –95 °C the 1S product 35 predominates. Dioxolane 14 isomerises more rapidly than its C-2 epimer 15, and both these reactions are under kinetic not thermodynamic control.
    rel-(2R,4S,5R)-4-(2–2,5–二甲氧基苯基)-2,5-二甲基-1,3-二氧戊环 1 和 rel- 2–1 差向异构混合物的立体选择性异构化(2S,4R,5R)- 和 rel-(2R,4R,5R)-4-(2-,5-二甲氧基苯基)-2,5-二甲基-1,3-二氧戊环 2 和 3 与四氯化钛在≤78℃下分别得到rel-(1R,3R,4S)-和rel-(1S,3R,4R)-4-羟基-5,8-二甲氧基-1,3-二甲基异色满烷25和30 。由于起始二氧戊环中2′-甲氧基的竞争影响,产率仅适中,并且当该基团被2′-氯取代基取代时,产率显着提高。 rel-(2R,4S,5R)-4-(2â2-Chloro-5â2-methoxy苯基)-2,5-二甲基-1,3-二氧戊环13在相似条件下顺利异构化为rel-(1R, 3R,4S)-5-氯-4-羟基-8-甲氧基-1,3-二甲基异色满34作为唯一的反应产物。相比之下,C-2 差向异构体 rel-(2R,4R,5R)- 和 rel-(2S,4R,5R)-4-(2-2-氯-5-2-甲氧基苯基)-2,5-二甲基- 1,3-二氧戊环 14 和 15 各自有利于在 78°C 下形成 rel-(1R,3R,4R)-5-氯-4-羟基-8-甲氧基-1,3-二甲基异色满 36,而在 95°C 时,1S 产物 35 占主导地位。二氧戊环 14 异构化速度比其 C-2 差向异构体 15 更快,并且这两个反应均受动力学而非热力学控制。
  • Short, convergent, stereoselective syntheses of enantiopure 2-benzopyran-5,8-quinones related to the aphid insect pigments, the protoaphins
    作者:Anthony A Birkbeck、Zinka Brkic、Robin G.F Giles
    DOI:10.1016/j.tetlet.2004.06.065
    日期:2004.8
    The enantiopure (1S,3S,4R)-, (1R,3S,4S)- and (1S,3S,4S)-3,4-dihydro-1,3-dimethyl-4-hydroxy-2-benzopyrans 16, 25 and 26 are prepared in two related reaction sequences, each in eight steps and good overall yield. The starting materials are 4-methoxyphenol 6 and (2S, 1'R and 2S, 1'S)-1' ethoxyethoxypropanal 9, the latter providing the source of asymmetry from the chiral pool. The three key reactions involved in each sequence are either highly or completely diastereoselective. (C) 2004 Elsevier Ltd. All rights reserved.
  • Syntheses in enantiopure form of four diastereoisomeric naphthopyranquinones derived from aphid insect pigments
    作者:Rachna Aggarwal、Robin G. F. Giles、Ivan R. Green、Francois J. Oosthuizen、C. Peter Taylor
    DOI:10.1039/b414213f
    日期:——
    The first syntheses are described of the four enantiopure naphthopyranquinones (1R,3R,4S)- and (1R,3R,4R)-3,4-dihydro-4,7,9-trihydroxy-1,3-dimethylnaphtho[2,3-c]pyranquinone (quinone A 1 and quinone A' 2) and their two C-3 epimers, the (1R,3S,4S)- and (1R,3S,4R)-diastereoisomers 5 and 6, using enantiopure lactate as the source of asymmetry. Key factors in these syntheses are the maintenance of stereochemical
    第一次合成描述了四个对映体纯的萘并吡喃醌(1R,3R,4S)-和(1R,3R,4R)-3,4-二氢-4,7,9-三羟基-1,3-二甲基萘[2,3 -c]吡喃醌(醌A 1和醌A'2)及其两个C-3差向异构体,(1R,3S,4S)-和(1R,3S,4R)-非对映异构体5和6,使用对映体纯乳酸作为不对称的来源。这些合成中的关键因素是整个序列中立体化学完整性的维持以及酚醛醛钛酸酚盐的分子内非对映选择性环化。对于这些环化,解释了不同程度的非对映选择性,以及产物2-苯并吡喃-4,5-二醇的立体化学。
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