4-Deoxycohumulon | 5880-42-2

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: 4-Deoxycohumulon
• 英文别名: 3,5-Bis-(3-methyl-2-butenyl)-phloroisobutyrophenon；3,5-Bis-<γ,γ-dimethyl-allyl>-phlorisobutyrophenon, 4-Desoxy-cohumulon；4-Desoxy-cohumulon；3,5-Diprenyl-phlorisobutyrophenon；{3,5-bis(3-methyl-2-butenyl)-2,4,6-trihydroxyphenyl} (2-propyl) ketone；4-Deoxycohumulone；2-methyl-1-[2,4,6-trihydroxy-3,5-bis(3-methylbut-2-enyl)phenyl]propan-1-one
• CAS: 5880-42-2
• 化学式: C₂₀H₂₈O₄
• 分子量: 332.44
• InChiKey: KKFIZYKKQLWBKH-UHFFFAOYSA-N

物化性质

• 物理描述：
  Solid
• 熔点：
  88-89°C
• 保留指数：
  2317;2317

计算性质

• 辛醇/水分配系数(LogP)：
  6
• 重原子数：
  24
• 可旋转键数：
  6
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.45
• 拓扑面积：
  77.8
• 氢给体数：
  3
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  3-(bromomethyl)-2-methylbut-3-en-2-ol 、 4-Deoxycohumulon 在 甲基三辛基氯化铵 、 potassium hydroxide 作用下， 以 水 、 氯苯 为溶剂， 以81%的产率得到3,5-Dihydroxy-6-(3-hydroxy-3-methyl-2-methylidenebutyl)-4,6-bis(3-methylbut-2-enyl)-2-(2-methylpropanoyl)cyclohexa-2,4-dien-1-one
  参考文献：
  名称：

  一种短仿生方法，用于完全官能化的A型酰基ph葡糖醇双环框架

  摘要：

  描述了一种仿生方法，用于A型多异戊酰化酰基间苯三酚（PPAP）。该方法基于C-烷基化-阳离子环化反应序列，使用简单易用的脱氧香豆草酮和适当官能化的羟基卤化物，可以方便地建立分子复杂性。因此，获得了A型PPAP（5）的完全功能化的双环骨架的通用构造。

  DOI：

  10.1021/ol901781n
• 作为产物：
  描述：

  phlorisobutyrophenone 、 异戊烯醇 在 aluminum oxide 作用下， 以 环己烷 为溶剂， 反应 24.0h， 以47%的产率得到4-Deoxycohumulon
  参考文献：
  名称：

  [EN] PROCESSES FOR THE PREPARATION OF ORTHO-ALLYLATED HYDROXY ARYL COMPOUNDS
  [FR] PROCÉDÉS DE PRÉPARATION DE COMPOSÉS HYDROXY-ARYLE ORTHO-ALLYLÉS

  摘要：

  本申请描述了一种制备邻烯丙基羟基芳基化合物的方法，例如通过在非质子溶剂中，在氧化铝和铝烷氧化物中选择的铝化合物存在下，将烯丙醇与羟基芳基化合物反应，其中羟基芳基化合物中至少有一个碳原子位于羟基的邻位且未被取代。本申请还包括化合物的化学式（I）。

  公开号：

  WO2021237371A1

文献信息

• Polyhydroxyphenol derivatives and preventive and therapeutic agents for bone and cartilage diseases containing the same
  申请人：Hoechst Marion Roussel

  公开号：US06177474B1

  公开（公告）日：2001-01-23

  Compounds useful as preventive and therapeutic agents for bone and cartilage diseases; and drug compositions containing the same. The compounds are polyhydroxyphenol derivatives of general formula (I) and quinione analogues derived therefrom (wherein R1 is alkyl, optionally substituted benzyl or optionally substituted aryl; R2 is hydrogen, alkyl, alkenyl or optionally substituted benzyl; R3 is hydrogen, alkyl, alkenyl, optionally substituted benzyl, hydroxyl, alkoxy, alkenyloxy or optionally substituted benzyloxy; R4 is hydrogen, alkyl, alkenyl, optionally substituted benzyl or hydroxyl; and R5 and R6 are each independently hydrogen, alkyl, alkenyl or optionally substituted benzyl). The polyhydroxyphenol derivatives and the quinone analogues exhibit a potent inhibitory activity against bone resorption and are useful as preventive and therapeutic agents for bone and cartilage diseases.

  具有预防和治疗骨骼和软骨疾病作用的化合物；以及含有这些化合物的药物组合物。这些化合物是通式(I)的多羟基酚衍生物和由此衍生的醌类似物（其中R1是烷基、可选择取代的苄基或可选择取代的芳基；R2是氢、烷基、烯烃基或可选择取代的苄基；R3是氢、烷基、烯烃基、可选择取代的苄基、羟基、烷氧基、烯烯氧基或可选择取代的苄氧基；R4是氢、烷基、烯烃基、可选择取代的苄基或羟基；而R5和R6各自独立地是氢、烷基、烯烃基或可选择取代的苄基）。这些多羟基酚衍生物和醌类似物表现出强大的抑制骨吸收活性，并且可用作预防和治疗骨骼和软骨疾病的药物。
• Expedient synthesis of ialibinones A and B by manganese(III)-mediated oxidative free radical cyclisation
  作者：Nigel S. Simpkins、Michael D. Weller

  DOI：10.1016/j.tetlet.2010.07.025

  日期：2010.9

  sequence involved (i) acylation of phloroglucinol under Friedel–Crafts conditions, (ii) double prenylation using phase-transfer methodology, (iii) dearomatising methylation, and (iv) oxidative free radical cyclisation using manganese(III) acetate.

  从间苯三酚开始，分四个步骤将三环天然产物Ialibinone A和Ialibinone B制成41:59的混合物。合成顺序包括（i）在Friedel-Crafts条件下对间苯三酚进行酰化，（ii）使用相转移方法进行双炔丙基化，（iii）脱芳基化甲基化，以及（iv）使用乙酸锰（III）进行氧化性自由基环化。
• A Heteromeric Membrane-Bound Prenyltransferase Complex from Hop Catalyzes Three Sequential Aromatic Prenylations in the Bitter Acid Pathway
  作者：Haoxun Li、Zhaonan Ban、Hao Qin、Liya Ma、Andrew J. King、Guodong Wang

  DOI：10.1104/pp.114.253682

  日期：2015.3

  Bitter acids (α and β types) account for more than 30% of the fresh weight of hop (Humulus lupulus) glandular trichomes and are well known for their contribution to the bitter taste of beer. These multiprenylated chemicals also show diverse biological activities, some of which have potential benefits to human health. The bitter acid biosynthetic pathway has been investigated extensively, and the genes for the early steps of bitter acid synthesis have been cloned and functionally characterized. However, little is known about the enzyme(s) that catalyze three sequential prenylation steps in the β-bitter acid pathway. Here, we employed a yeast (Saccharomyces cerevisiae) system for the functional identification of aromatic prenyltransferase (PT) genes. Two PT genes (HlPT1L and HlPT2) obtained from a hop trichome-specific complementary DNA library were functionally characterized using this yeast system. Coexpression of codon-optimized PT1L and PT2 in yeast, together with upstream genes, led to the production of bitter acids, but no bitter acids were detected when either of the PT genes was expressed by itself. Stepwise mutation of the aspartate-rich motifs in PT1L and PT2 further revealed the prenylation sequence of these two enzymes in β-bitter acid biosynthesis: PT1L catalyzed only the first prenylation step, and PT2 catalyzed the two subsequent prenylation steps. A metabolon formed through interactions between PT1L and PT2 was demonstrated using a yeast two-hybrid system, reciprocal coimmunoprecipitation, and in vitro biochemical assays. These results provide direct evidence of the involvement of a functional metabolon of membrane-bound prenyltransferases in bitter acid biosynthesis in hop.

  苦酸（α和β型）占啤酒花腺毛重量的30%以上，是啤酒苦味的来源。这些多烯基化合物的生物活性多种多样，其中一些可能对人体健康有益。苦酸的生物合成途径已经过广泛研究，苦酸合成早期步骤的基因也已克隆并确定功能。然而，人们对催化β-苦酸合成途径中三个连续烯基化步骤的酶知之甚少。在此，我们采用酵母（酿酒酵母）系统对芳香烯基转移酶（PT）基因的功能进行了鉴定。利用酵母系统对从啤酒花腺毛特异性互补DNA文库中获得的两个PT基因（HlPT1L和HlPT2）进行了功能鉴定。在酵母中，经过密码子优化的PT1L和PT2与上游基因共表达可产生苦酸，但单独表达任一PT基因时均未检测到苦酸。PT1L和PT2中富含天冬氨酸的基序的逐步突变进一步揭示了β-苦酸生物合成中这两种酶的烯基化序列：PT1L仅催化第一个烯基化步骤，PT2催化随后的两个烯基化步骤。利用酵母双杂交系统、相互共沉淀和体外生化分析，证明了PT1L和PT2之间的相互作用形成的代谢体。这些结果直接证明了膜结合烯基转移酶的功能代谢体参与啤酒花苦酸生物合成。
• Biomimetic Synthesis of Polycyclic Polyprenylated Acylphloroglucinol Natural Products Isolated from <i>Hypericum papuanum</i>
  作者：Jonathan H. George、Micha D. Hesse、Jack E. Baldwin、Robert M. Adlington

  DOI：10.1021/ol101380a

  日期：2010.8.6

  Biomimetic syntheses of three polycylic polyprenylated acylphloroglucinol natural products isolated from Hypericum papuanum, ialibinone A, ialibinone B, and hyperguinone B, have been accomplished by selective oxidative cyclizations of the proposed biosynthetic precursor 5, which was synthesized from phloroglucinol in three steps.
• PROCESSES FOR THE PREPARATION OF ORTHO-ALLYLATED HYDROXY ARYL COMPOUNDS
  申请人：McMaster University

  公开号：US20210380513A1

  公开（公告）日：2021-12-09

  The present application describes process for preparing an ortho-allylated hydroxy aryl compounds such as compounds of Formula (I) by reacting an allylic alcohol with a hydroxy aryl compound in the presence of aluminum compound selected from alumina and aluminum alkoxides and in a non-protic solvent wherein at least one carbon atom ortho to the hydroxy group in the hydroxy aryl compound is unsubstituted. The present application also includes compounds of Formula (I).