草大戟素; 2',4',5,7-四羟基黄烷酮 | 56486-94-3

• 物质功能分类: 天然产物 - 黄酮类化合物
• 分子结构分类: 有机化合物 - 苯丙烷和聚酮 - 黄酮类化合物
• 中文名称: 草大戟素; 2',4',5,7-四羟基黄烷酮
• 中文别名: 2',4',5,7-四羟基黄烷酮
• 英文名称: steppogenin
• 英文别名: norartocarpanone；2'-hydroxynaringenin；(2S)-5,7,2',4'-tetrahydroxyflavanone；(2S)-2-(2,4-dihydroxyphenyl)-5,7-dihydroxy-2,3-dihydrochromen-4-one
• CAS: 56486-94-3
• 化学式: C₁₅H₁₂O₆
• 分子量: 288.257
• InChiKey: QBLQLKNOKUHRCH-ZDUSSCGKSA-N

物化性质

• 溶解度：
  溶于氯仿、二氯甲烷、乙酸乙酯、DMSO、丙酮等。

计算性质

• 辛醇/水分配系数(LogP)：
  2
• 重原子数：
  21
• 可旋转键数：
  1
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.13
• 拓扑面积：
  107
• 氢给体数：
  4
• 氢受体数：
  6

反应信息

• 作为反应物：
  描述：

  3-甲基丁-2-烯基膦酰磷酸氢酯 、 草大戟素; 2',4',5,7-四羟基黄烷酮 在 recombinant Sophora flavescens flavonoid prenyltransferase 、 magnesium chloride 作用下， 以 aq. buffer 为溶剂， 反应 2.0h， 生成 8-dimethylallylsteppogenin 、 cudraflavanone B
  参考文献：
  名称：

  黄苦槐异戊二烯基转移酶对黄酮类化合物的区域和立体特异性异戊烯基化作用

  摘要：

  异戊二烯类黄酮是有价值的天然产物，广泛分布在植物中。它们通常具有不同的生物学特性，包括植物雌激素，抗菌，抗肿瘤和抗糖尿病活性。异戊二烯基转移酶催化的反应代表天然异戊二烯类黄酮生物合成中黄酮类骨架的弗里德-克来夫特烷基化，通常有助于这些化合物的结构多样性和生物活性。然而，到目前为止，仅鉴定出几种植物类黄酮异戊二烯基转移酶，并且这些异戊二烯基转移酶表现出严格的底物特异性和低催化效率。在本文中，苦参中的类黄酮异戊二烯基转移酶，SfFPT，已被证明对结构不同类型的类黄酮（即黄烷酮，黄酮，黄烷醇和二氢查耳酮等）的C-8表现出高催化效率和高区域特异性。此外，SfPFT对左旋黄烷酮产生（2 S）-异戊烯基黄烷酮具有严格的立体特异性。这项研究是第一个证明体外植物黄酮类异戊二烯基转移酶的底物混杂性和立体特异性。鉴于其底物的混杂性和高催化效率，SfFPT可以用作一种环境友好且高效的生物催化剂，用于类黄酮的区域

  DOI：

  10.1002/adsc.201300196
• 作为产物：
  描述：

  steppogenin 在 Daicel CHIRALPAK IC 作用下， 以 正己烷 、 异丙醇 为溶剂， 以2.2 mg的产率得到5,7,2',4'-tetrahydroxyflavanone
  参考文献：
  名称：

  来自桑树根皮的具有 α-葡萄糖苷酶抑制活性的异戊二烯化黄烷酮对映异构体

  摘要：

  对一种名为 Sang-Bai-Pi（桑树根皮）的著名中药的极性馏分进行集中化学研究，产生了一组异戊二烯化黄烷酮。根据 HRMS、NMR 和 ECD 分析，新化合物被鉴定为具有相同构成结构的四对映异构体 （1a/1b–4a/4b）。还通过手性柱上的 HPLC 分析和分离了几种先前报道的已知外消旋共代谢物，并首次通过 ECD 技术建立了纯对映异构体的绝对构型。进一步测试了这些分离株对抗糖尿病靶标 α-糖苷酶的抑制作用，与阳性对照阿卡波糖相比，它们中的大多数显示出不错的抑制活性。通过动力学实验探索了两种选定化合物（3a和4b）的相互作用机制，揭示了对酶的混合抑制模式。

  DOI：

  10.1002/cbdv.202401646
• 作为试剂：
  描述：

  L-酪氨酸 在 草大戟素; 2',4',5,7-四羟基黄烷酮 、 酪氨酸酶 作用下， 以 乙醇 、 水 为溶剂， 生成 左旋多巴
  参考文献：
  名称：

  Tyrosinase Inhibitory Polyphenols from Roots ofMorus lhou

  摘要：

  Twelve polyphenols (1-12) possessing tyrosinase inhibitory properties were isolated from the methanol (95%) extract of Morus Ihou. The isolated compounds consisted of four flavanones (1-4), four flavones (5-8), and four phenylbenzofuranes (9-12). Moracin derivative 12 proved to be new a compound which was fully characterized. Compounds 1-12 were evaluated for both monophenolase and diphenolase (the two steps catalyzed by tyrosinase) inhibition to identify the structural characteristics required for mushroom tyrosinase inhibition. We observed that all parent compounds (1, 5, and 9) possessing an unsubstituted resorcinol group were highly effective inhibitors of monophenolase activity (IC50 values of 1.3, 1.2, and 7.4 mu M). The potency of the inhibitors diminished with alkyl substitution on either the aromatic ring or the hydroxyl functions. Interestingly, flavone 5 was shown to possess only monophenolase inhibitory activity, but flavanone 1 and phenylbenzofuran 9 inhibited diphenolase as well as monophenolase significantly. The inhibitory mode of these species was also dependent upon the skeleton: phenylbenzofuran 9 manifested a simple competitive inhibition mode for monophenolase and diphenolase; on the other hand flavanone 1 (monophenolase, k(3) = 0. 1966 min(-1) mu M-1, k(4) = 0.0082 min(-1), and K-i(app) = 0.0468 mu M; diphenolase, k(3) = 0.0014 min(-1) mu M-1, k(4) = 0.0013 min(-1), and K-i(app) = 0.8996 mu M) and flavone 5 both showed time-dependent inhibition against monophenolase. Compound 1 operated according to the simple reversible slow binding model whereas compound 5 operated under the enzyme isomerization model.

  DOI：

  10.1021/jf8033286

文献信息

• Aromatase inhibitors from Broussonetia papyrifera
  申请人：——

  公开号：US20030125377A1

  公开（公告）日：2003-07-03

  A composition and method of cancer treatment is disclosed. The composition and method utilized the extract of B. papyrifera , or compounds included therein having aromatase inhibition properties, as active cancer chemopreventative and treating agents in mammals, including humans.

  本发明揭示了一种癌症治疗的组合物和方法。该组合物和方法利用B. papyrifera的提取物，或者包括具有芳香化酶抑制作用的化合物，作为哺乳动物，包括人类的活性癌症化学预防和治疗剂。
• Flavanone 8-dimethylallyltransferase in Sophora flavescens cell suspension cultures
  作者：Hirobumi Yamamoto、Masayuki Senda、Kenichiro Inoue

  DOI：10.1016/s0031-9422(00)00198-9

  日期：2000.8

  Dimethylallyl diphosphate: naringenin 8-dimethylallyltransferase (EC 2.5.1) was characterized. The enzyme was enantiospecific for (-)-(2S)-naringenin and utilized 3,3-dimethylallyl diphosphate as sole prenyl donor. It required Mg2+ (optimum concentration, 10 mM), and has an optimum pH of 9-10. The apparent K-m values for 3,3-dimethylallyl diphosphate and naringenin were 120 and 36 mu M, respectively. The microsomal fraction prenylated several other flavanones at the C-8 position less effectively as compared with naringenin. Interestingly, when 2'-hydroxynaringenin was used as a prenyl acceptor, the 8-lavandulyl (sophoraflavanone G) and the 6-dimethylallyl derivatives were formed, together with the 8-dimethylallyl derivative, leachianone G. These results suggest that the 2'-hydroxy group of naringenin plays an important role for the formation of a lavandulyl group. (C) 2000 Elsevier Science Ltd. All rights reserved.
• US6737439B2
  申请人：——

  公开号：US6737439B2

  公开（公告）日：2004-05-18
• [EN] AROMATASE INHIBITORS FROM BROUSSONETIA PAPYRIFERA<br/>[FR] INHIBITEURS DE L'AROMATASE PROVENANT DE BROUSSONETIA PAPYRIFERA
  申请人：UNIV ILLINOIS

  公开号：WO2003013554A2

  公开（公告）日：2003-02-20

  A composition and method of cancer treatment is disclosed. The composition and method utilize the extract of B. papyrifera, or compounds included therein having aromatase inhibition properties, as active cancer chemopreventative and treating agents in mammals, including humans.
• Regio- and Stereospecific Prenylation of Flavonoids by<i>Sophora flavescens</i>Prenyltransferase
  作者：Ridao Chen、Xiao Liu、Jianhua Zou、Yunze Yin、Bin Ou、Jianhua Li、Ruishan Wang、Dan Xie、Peicheng Zhang、Jungui Dai

  DOI：10.1002/adsc.201300196

  日期：2013.6.17

  activities. The reaction catalyzed by prenyltransferases represents a Friedel–Crafts alkylation of the flavonoid skeleton in the biosynthesis of natural prenylflavonoids and often contributes to the structural diversity and biological activity of these compounds. However, only a few plant flavonoid prenyltransferases have been identified thus far, and these prenyltransferases exhibit strict substrate

  异戊二烯类黄酮是有价值的天然产物，广泛分布在植物中。它们通常具有不同的生物学特性，包括植物雌激素，抗菌，抗肿瘤和抗糖尿病活性。异戊二烯基转移酶催化的反应代表天然异戊二烯类黄酮生物合成中黄酮类骨架的弗里德-克来夫特烷基化，通常有助于这些化合物的结构多样性和生物活性。然而，到目前为止，仅鉴定出几种植物类黄酮异戊二烯基转移酶，并且这些异戊二烯基转移酶表现出严格的底物特异性和低催化效率。在本文中，苦参中的类黄酮异戊二烯基转移酶，SfFPT，已被证明对结构不同类型的类黄酮（即黄烷酮，黄酮，黄烷醇和二氢查耳酮等）的C-8表现出高催化效率和高区域特异性。此外，SfPFT对左旋黄烷酮产生（2 S）-异戊烯基黄烷酮具有严格的立体特异性。这项研究是第一个证明体外植物黄酮类异戊二烯基转移酶的底物混杂性和立体特异性。鉴于其底物的混杂性和高催化效率，SfFPT可以用作一种环境友好且高效的生物催化剂，用于类黄酮的区域