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Toluene-4-sulfonic acid 6-hydroxy-3,7-dimethoxy-2-(4-methoxy-phenyl)-4-oxo-4H-chromen-5-yl ester | 170235-00-4

中文名称
——
中文别名
——
英文名称
Toluene-4-sulfonic acid 6-hydroxy-3,7-dimethoxy-2-(4-methoxy-phenyl)-4-oxo-4H-chromen-5-yl ester
英文别名
[6-Hydroxy-3,7-dimethoxy-2-(4-methoxyphenyl)-4-oxochromen-5-yl] 4-methylbenzenesulfonate
Toluene-4-sulfonic acid 6-hydroxy-3,7-dimethoxy-2-(4-methoxy-phenyl)-4-oxo-4H-chromen-5-yl ester化学式
CAS
170235-00-4
化学式
C25H22O9S
mdl
——
分子量
498.51
InChiKey
GDENCKBDTRIIGY-UHFFFAOYSA-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):
    4.4
  • 重原子数:
    35
  • 可旋转键数:
    7
  • 环数:
    4.0
  • sp3杂化的碳原子比例:
    0.16
  • 拓扑面积:
    126
  • 氢给体数:
    1
  • 氢受体数:
    9

反应信息

  • 作为反应物:
    描述:
    乙酸酐Toluene-4-sulfonic acid 6-hydroxy-3,7-dimethoxy-2-(4-methoxy-phenyl)-4-oxo-4H-chromen-5-yl ester吡啶 作用下, 生成 Acetic acid 3,7-dimethoxy-2-(4-methoxy-phenyl)-4-oxo-5-(toluene-4-sulfonyloxy)-4H-chromen-6-yl ester
    参考文献:
    名称:
    Studies of the Selective O-Alkylation and Dealkylation of Flavonoids. XXIII. Demethylation Behaviors of 6-Hydroxy-4',7-dimethoxy-5-tosyloxyflavones with Anhydrous Aluminum Halides in Acetonitrile.
    摘要:
    在乙腈中用无水溴化铝(AlBr3)或无水氯化铝-碘化钠(AlCl3-NaI)对 6-羟基-3,4',7-三甲氧基-5-甲氧基黄酮(1)进行脱甲基反应时、脱甲基后,5-tosyloxy 基团被消除,主要产物为 8-溴-3,6,7-三羟基-4'-甲氧基黄酮(6)或 3,6,7-三羟基-4'-甲氧基黄酮(5)。用 AlCl3-NaI 对 6-hydroxy-4', 7-dimethoxy-5-tosyloxyflavone (2) 进行脱甲基反应,也可以得到 6, 7-二羟基-4'-甲氧基黄酮 (12),但用 AlBr3 则可以得到 8-溴-5, 6, 7-三羟基-4'-甲氧基黄酮 (13) 作为主要产物。用无水氯化铝(AlCl3)对 1 进行脱甲基反应时,伴随着甲苯基的迁移,得到 3,6-二羟基-7,4'-二甲氧基-5-甲氧基黄酮(3)和 5-羟基-3,4',7-三甲氧基-6-甲氧基黄酮(9)的混合物、但 2 在 5-甲氧基基团裂解后,生成了 5,6-二羟基-7,4'-二甲氧基黄酮 (14) 和 5,6,7-三羟基-4'-甲氧基黄酮 (15) 的混合物,而不是相应的 6-甲氧基黄酮 (16)。在用 AlCl3 对 1 和 2 的乙酸酯进行脱甲基反应时,5-tosyloxy 基团先于脱甲基反应发生裂解,从而得到相应的 5、6、7-三羟基黄酮(8 和 15),尽管前一种乙酸酯的脱甲基反应伴随着 3、5、7-三羟基-4'-甲氧基-6-tosyloxy 黄酮(10)的形成。提出了这些反应的机理。
    DOI:
    10.1248/cpb.45.1573
  • 作为产物:
    描述:
    5,6-dihydroxy-3,7,4′-trimethoxyflavonol 在 盐酸potassium carbonate溶剂黄146N,N-二异丙基乙胺 作用下, 以 二氯甲烷丙酮 为溶剂, 反应 8.0h, 生成 Toluene-4-sulfonic acid 6-hydroxy-3,7-dimethoxy-2-(4-methoxy-phenyl)-4-oxo-4H-chromen-5-yl ester
    参考文献:
    名称:
    Studies of the Selective O-Alkylation and Dealkylation of Flavonoids. XXIII. Demethylation Behaviors of 6-Hydroxy-4',7-dimethoxy-5-tosyloxyflavones with Anhydrous Aluminum Halides in Acetonitrile.
    摘要:
    在乙腈中用无水溴化铝(AlBr3)或无水氯化铝-碘化钠(AlCl3-NaI)对 6-羟基-3,4',7-三甲氧基-5-甲氧基黄酮(1)进行脱甲基反应时、脱甲基后,5-tosyloxy 基团被消除,主要产物为 8-溴-3,6,7-三羟基-4'-甲氧基黄酮(6)或 3,6,7-三羟基-4'-甲氧基黄酮(5)。用 AlCl3-NaI 对 6-hydroxy-4', 7-dimethoxy-5-tosyloxyflavone (2) 进行脱甲基反应,也可以得到 6, 7-二羟基-4'-甲氧基黄酮 (12),但用 AlBr3 则可以得到 8-溴-5, 6, 7-三羟基-4'-甲氧基黄酮 (13) 作为主要产物。用无水氯化铝(AlCl3)对 1 进行脱甲基反应时,伴随着甲苯基的迁移,得到 3,6-二羟基-7,4'-二甲氧基-5-甲氧基黄酮(3)和 5-羟基-3,4',7-三甲氧基-6-甲氧基黄酮(9)的混合物、但 2 在 5-甲氧基基团裂解后,生成了 5,6-二羟基-7,4'-二甲氧基黄酮 (14) 和 5,6,7-三羟基-4'-甲氧基黄酮 (15) 的混合物,而不是相应的 6-甲氧基黄酮 (16)。在用 AlCl3 对 1 和 2 的乙酸酯进行脱甲基反应时,5-tosyloxy 基团先于脱甲基反应发生裂解,从而得到相应的 5、6、7-三羟基黄酮(8 和 15),尽管前一种乙酸酯的脱甲基反应伴随着 3、5、7-三羟基-4'-甲氧基-6-tosyloxy 黄酮(10)的形成。提出了这些反应的机理。
    DOI:
    10.1248/cpb.45.1573
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文献信息

  • Studies of the Selective<i>O</i>-Alkylation and Dealkylation of Flavonoids. XVIII. A Convenient Method for Synthesizing 3,5,6,7-Tetrahydroxyflavones
    作者:Tokunaru Horie、Takashi Kobayashi、Yasuhiko Kawamura、Isao Yoshida、Hideaki Tominaga、Kazuyo Yamashita
    DOI:10.1246/bcsj.68.2033
    日期:1995.7
    In the demethylation of 6-hydroxy-3,4′,7-trimethoxy-5-(tosyloxy)flavone with anhydrous aluminum bromide, the 5-tosyloxyl group was eliminated with bromination to give 8-bromo-3,6,7-trihydroxy-4′-methoxyflavone as the main product. When anhydrous aluminum chloride was used in the demethylation of the acetate, the 5-tosyloxyl group was cleaved prior to the demethylation to give 5,6,7-trihydroxy-3,4′-dimethoxyflavone. Demethylation of 6-hydroxy-4′,5,7-trimethoxy-3-(tosyloxy)flavone and its acetate with the bromide or chloride afforded the 5,6,7-trihydroxyflavone without the cleavage of the 3-tosyloxyl group, but was not suitable for the general synthesis of the 3,5,6,7-tetrahydroxyflavones because of the difficulty in removing the protecting group. Consequently, it was found that the direct demethylation of 3,6-dihydroxy-5,7-dimethoxyflavones with anhydrous aluminum chloride–sodium iodide in acetonitrile was the most useful general method for synthesizing 3,5,6,7-tetrahydroxyflavones. Additionally, the reported structures of two natural flavones were revised.
    在无水溴化铝的脱甲基反应中,6-羟基-3,4′,7-三甲氧基-5-(托烯氧基)黄酮的5-托烯氧基基团在溴化作用下被消除,生成8-溴-3,6,7-三羟基-4′-甲氧基黄酮作为主要产物。当使用无水氯化铝进行醋酸酯的脱甲基反应时,5-托烯氧基基团在脱甲基前被切断,生成5,6,7-三羟基-3,4′-二甲氧基黄酮。6-羟基-4′,5,7-三甲氧基-3-(托烯氧基)黄酮及其醋酸酯与溴化物或氯化物的脱甲基反应生成5,6,7-三羟基黄酮,而不切断3-托烯氧基基团,但由于去除保护基团的困难,不适合于3,5,6,7-四羟基黄酮的一般合成。因此,发现采用无水氯化铝-碘化钠在乙腈中对3,6-二羟基-5,7-二甲氧基黄酮进行直接脱甲基反应是合成3,5,6,7-四羟基黄酮的最有效的一般方法。此外,修订了两种天然黄酮的已报告结构。
  • Studies of the Selective O-Alkylation and Dealkylation of Flavonoids. XXIII. Demethylation Behaviors of 6-Hydroxy-4',7-dimethoxy-5-tosyloxyflavones with Anhydrous Aluminum Halides in Acetonitrile.
    作者:Tokunaru HORIE、Yoshizumi OHTSURU、Noriko MINAMIMOTO、Kazuyo YAMASHITA、Yasuhiko KAWAMURA、Masao TSUKAYAMA
    DOI:10.1248/cpb.45.1573
    日期:——
    In the demethylation of 6-hydroxy-3, 4', 7-trimethoxy-5-tosyloxyflavone (1) with anhydrous aluminum bromide (AlBr3) or anhydrous aluminum chloride-sodium iodide (AlCl3-NaI) in acetonitrile, the elimination of the 5-tosyloxy group proceeded after demethylation to give 8-bromo-3, 6, 7-trihydroxy-4'-methoxyflavone (6) or 3, 6, 7-trihydroxy-4'-methoxyflavone (5) as a main product. The demethylation of 6-hydroxy-4', 7-dimethoxy-5-tosyloxyflavone (2) with AlCl3-NaI also afforded 6, 7-dihydroxy-4'-methoxyflavone (12), but that with AlBr3 afforded 8-bromo-5, 6, 7-trihydroxy-4'-methoxyflavone (13) as a main product. The demethylation of 1 with anhydrous aluminum chloride (AlCl3) was accompanied by migration of the tosyl group to give a mixture of 3, 6-dihydroxy-7, 4'-dimethoxy-5-tosyloxyflavone (3) and 5-hydroxy-3, 4', 7-trimethoxy-6-tosyloxyflavone (9), but that of 2 proceeded after the cleavage of the 5-tosyloxy group to give a mixture of 5, 6-dihydroxy-7, 4'-dimethoxy- (14) and 5, 6, 7-trihydroxy-4'-methoxyflavones (15) other than the corresponding 6-tosyloxyflavone (16). In the demethylation of the acetates of 1 and 2 with AlCl3, the cleavage of the 5-tosyloxy group proceeded prior to the demethylation to afford the corresponding 5, 6, 7-trihydroxyflavones (8 and 15), although the demethylation of the former acetate was accompanied by formation of 3, 5, 7-trihydroxy-4'-methoxy-6-tosyloxyflavone (10). Mechanisms are proposed for these reactions.
    在乙腈中用无水溴化铝(AlBr3)或无水氯化铝-碘化钠(AlCl3-NaI)对 6-羟基-3,4',7-三甲氧基-5-甲氧基黄酮(1)进行脱甲基反应时、脱甲基后,5-tosyloxy 基团被消除,主要产物为 8-溴-3,6,7-三羟基-4'-甲氧基黄酮(6)或 3,6,7-三羟基-4'-甲氧基黄酮(5)。用 AlCl3-NaI 对 6-hydroxy-4', 7-dimethoxy-5-tosyloxyflavone (2) 进行脱甲基反应,也可以得到 6, 7-二羟基-4'-甲氧基黄酮 (12),但用 AlBr3 则可以得到 8-溴-5, 6, 7-三羟基-4'-甲氧基黄酮 (13) 作为主要产物。用无水氯化铝(AlCl3)对 1 进行脱甲基反应时,伴随着甲苯基的迁移,得到 3,6-二羟基-7,4'-二甲氧基-5-甲氧基黄酮(3)和 5-羟基-3,4',7-三甲氧基-6-甲氧基黄酮(9)的混合物、但 2 在 5-甲氧基基团裂解后,生成了 5,6-二羟基-7,4'-二甲氧基黄酮 (14) 和 5,6,7-三羟基-4'-甲氧基黄酮 (15) 的混合物,而不是相应的 6-甲氧基黄酮 (16)。在用 AlCl3 对 1 和 2 的乙酸酯进行脱甲基反应时,5-tosyloxy 基团先于脱甲基反应发生裂解,从而得到相应的 5、6、7-三羟基黄酮(8 和 15),尽管前一种乙酸酯的脱甲基反应伴随着 3、5、7-三羟基-4'-甲氧基-6-tosyloxy 黄酮(10)的形成。提出了这些反应的机理。
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