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(1R,3S,4R)-3,4-Dihydro-1,3-dimethyl-4-hydroxy-2-benzopyran-5,8-quinone

中文名称
——
中文别名
——
英文名称
(1R,3S,4R)-3,4-Dihydro-1,3-dimethyl-4-hydroxy-2-benzopyran-5,8-quinone
英文别名
(1R,3S,4R)-3,4-dihydro-4-hydroxy-1,3-dimethylbenzo[c]pyran-5,8-quinone;(1R,3S,4R)-4-hydroxy-1,3-dimethyl-3,4-dihydro-1H-isochromene-5,8-dione
(1R,3S,4R)-3,4-Dihydro-1,3-dimethyl-4-hydroxy-2-benzopyran-5,8-quinone化学式
CAS
——
化学式
C11H12O4
mdl
——
分子量
208.214
InChiKey
HSIIBIYKFWINAF-WWILAJSPSA-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

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文献信息

  • The asymmetric synthesis of 2-benzopyrans and their quinones through intramolecular diastereoselective ring-closure of titanium phenolates of phenolic aldehydes
    作者:Robin G. F. Giles、Cynthia A. Joll
    DOI:10.1039/a901457h
    日期:——
    Treatment of the phenolic aldehyde (α′S,2S)-2-(5′-hydroxy-2′-methoxy-α′-methylbenzyloxy)propanal 15 with titanium tetraisopropoxide followed by ultrasonication led to its completely diastereoselective cyclisation in high yield to afford (1S,3S,4R)-3,4-dihydro-1,3-dimethyl-8-methoxy-2-benzopyran-4,5-diol 18, which was characterised as its more stable 4,5-diacetate 19. The diastereomeric (α′R,2S)-2-(5′-hydroxy-2′-methoxy-α′-methylbenzyloxy)propanal 17 on similar treatment gave rise to a mixture of (1R, 3S, 4R)- and (1R, 3S, 4S)-3,4-dihydro-1,3-dimethyl-8-methoxy-2-benzopyran-4,5-diols 21 and 23, isolated as the 4,5-diacetates 22 and 24, in a ratio of 3∶1. Oxidative dealkylation of the diol 18 with silver(II) oxide afforded (1S,3S,4R)-3,4-dihydro-1,3-dimethyl-4-hydroxy-2-benzopyran-5,8-quinone 2 in high yield, while the epimeric 1R quinone 40 was similarly obtained from diol 21.
    对酚醛(α′S,2S)-2-(5′-羟基-2′-甲氧基-α′-甲基苄氧基)丙醛15进行钛四异丙氧化物处理,随后进行超声波处理,导致其高产率完全读者选择性的环化,得到(1S,3S,4R)-3,4-二氢-1,3-二甲基-8-甲氧基-2-苯并吡喃-4,5-二醇18,该化合物以其更稳定的4,5-二乙酰基形式19进行表征。通过类似的方法对立体异构体(α′R,2S)-2-(5′-羟基-2′-甲氧基-α′-甲基苄氧基)丙醛17的处理,产生了(1R,3S,4R)-和(1R,3S,4S)-3,4-二氢-1,3-二甲基-8-甲氧基-2-苯并吡喃-4,5-二醇21和23的混合物,以4,5-二乙酰基形式22和24分离,比例为3∶1。用银(II)氧化物对二醇18进行氧化去烷基化,得到(1S,3S,4R)-3,4-二氢-1,3-二甲基-4-羟基-2-苯并吡喃-5,8-醌2,且以高产率得到。与此类似,从二醇21获得的表异构体1R醌40。
  • 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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