3,4-dihydroxy-2-methoxybenzaldehyde | 24006-29-9

• 分子结构分类: 有机化合物 - 苯类化合物 - 酚类
• 英文名称: 3,4-dihydroxy-2-methoxybenzaldehyde
• 英文别名: Benzaldehyde, 3,4-dihydroxy-2-methoxy-
• CAS: 24006-29-9
• 化学式: C₈H₈O₄
• 分子量: 168.149
• InChiKey: GGHQMCJKHUKPOJ-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  0.6
• 重原子数：
  12
• 可旋转键数：
  2
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.12
• 拓扑面积：
  66.8
• 氢给体数：
  2
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  3,4-dihydroxy-2-methoxybenzaldehyde 在 hydroxylamine-O-sulfonic acid 作用下， 以 水 为溶剂， 反应 2.5h， 以89%的产率得到3,4-dihydroxy-2-methoxybenzonitrile
  参考文献：
  名称：

  Effects of electron-withdrawing substituents on DPPH radical scavenging reactions of protocatechuic acid and its analogues in alcoholic solvents

  摘要：

  The DPPH (2,2-diphenyl-l-picrylhydrazyl) radical scavenging activity of protocatechuic acid (3,4-dihydroxybenzoic acid) and its related catechols was examined. Compounds possessing strong electron-withdrawing substituents showed high activity. NMR analysis of the reaction mixtures of catechols and DPPH radical in methanol showed the formation of methanol adducts. The results suggest that high radical scavenging activity of catechols in alcohol is due to a nucleophilic addition of an alcohol molecule on o-quinones, which leads to a regeneration of a catechol structure. Furthermore, the radical scavenging activity in alcohols would largely depend on the electron-withdrawing/donating substituents, Since they affect the susceptibility toward nucleophilic attacks on o-quinone. (c) 2005 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tet.2005.06.040
• 作为产物：
  描述：

  2,3,4-三羟基苯甲醛 在 甲醇 、 potassium carbonate 、 N,N-二异丙基乙胺 作用下， 以 二氯甲烷 、 N,N-二甲基甲酰胺 为溶剂， 反应 20.17h， 生成 3,4-dihydroxy-2-methoxybenzaldehyde
  参考文献：
  名称：

  Phoyunbenes A-D和Thunalbene的抗炎性评估

  摘要：

  使用霍纳-沃兹沃思-埃蒙斯反应作为关键步骤，开发了简单而有效的苯并二苯并呋喃苯并噻吩的合成方法。后来，在脂多糖诱导的RAW-264.7巨噬细胞中研究了它们的抗炎作用。结果表明，苯并恶唑苯并呋喃苯并呋喃苯砜具有很弱的抑制活性，并且对重要的炎症介质一氧化氮的产生没有细胞毒性。

  DOI：

  10.1002/bkcs.10605

文献信息

• 스틸벤 골격을 갖는 포윤벤 A-D 및 튠알벤 합성방법
  申请人：Industry Academic Cooperation Foundation, Hallym University 한림대학교 산학협력단(220070195175) BRN ▼221-82-10284

  公开号：KR20160115127A

  公开（公告）日：2016-10-06

  HWE(Horner-Wadsworth-Emmons) 반응을 이용하여 포윤벤 A-D와 튠알벤을 합성하는 간단하고 효과적인 최초의 합성방법을 발명하였다. 또한, 지다당으로 유도되는 RAW-264.7 대식세포에서 이 화합물들의 항염증 효과도 밝혔다.

  利用HWE（Horner-Wadsworth-Emmons）反应，发明了一种简单而有效的合成方法，用于合成四种不同的Foyunben A-D和Tunalben。此外，还揭示了这些化合物在RAW-264.7巨噬细胞中通过糖皮质激素诱导的抗炎作用。
• SUBSTANCES FOR DYEING KERATINOUS FIBERS
  申请人：Gross Wibke

  公开号：US20100037909A1

  公开（公告）日：2010-02-18

  Disclosed are substances which contain unsaturated, non-aromatic dialdehydes of formula (Ia) and/or the tautomer (Ib) thereof, wherein R 1 , R 2 , and R 3 are defined as indicated in claim 1 , along with at least one CH-acidic compound of formulas (II) and/or (III), wherein R 6 , R 7 , R 8 , R 9 , R 10 , Y, X − , Het, and X 1 are defined as indicated in claim 1 , in a cosmetic carrier. Said substances color keratinous fibers, especially human hair, in an intensive, colorfast, natural brown shade.

  本发明涉及一种含有式(Ia)和/或其互变异构体(Ib)的不饱和非芳香二醛的物质，其中R1、R2和R3如权利要求1所示定义，以及至少一种式(II)和/或(III)的CH-酸性化合物，其中R6、R7、R8、R9、R10、Y、X−、Het和X1如权利要求1所示定义，在一种化妆品载体中。所述物质能够使角质纤维，尤其是人类头发，在一种浓郁、色牢、自然棕色的色调中着色。
• AGENT FOR DYEING KERATIN-CONTAINING FIBERS
  申请人：Gross Wibke

  公开号：US20100064450A1

  公开（公告）日：2010-03-18

  The invention relates to an agent for dying fibers comprising keratin, particularly human hair, the agent comprising at least one compound of the formula: together with at least one CH-acidic compound. The invention also relates to methods for shading oxidation dyed fibers, methods for freshening up fibers, methods for making an agent for dyeing fibers and to various compositions.

  该发明涉及一种用于染色纤维的药剂，包括角蛋白，特别是人类头发，该药剂包括至少一种具有以下结构的化合物：以及至少一种CH-酸性化合物。该发明还涉及用于给氧化染色纤维着色的方法，用于使纤维焕发的方法，用于制备染色纤维药剂的方法以及各种组合物。
• HAIR TREATMENT PRODUCTS COMPRISING POLYMERS
  申请人：Schulze zur Wiesche Erik

  公开号：US20090304620A1

  公开（公告）日：2009-12-10

  The invention relates to hair treatment products, comprising at least one copolymer made of 0.1 to 50% (in relation to the total number of monomers in the copolymer) monomers of the formula (I), wherein the unknowns are defined as in claim 1 , and A2) are monomers from the group of acrylic acid, methacrylic acid and the like, and—optionally non-ionic monomers from the group of acrylamide, vinyl alcohol, and the like, wherein the monomers A2 and A3 together represent 50 to 99.9% (in relation to the total number of monomers in the copolymer) of the copolymer, at least one silicon and at least one selected care product, wherein the products result in advantageous effects for skin and hair.

  该发明涉及头发护理产品，包括至少一种由0.1至50%（相对于共聚物中单体总数的比例）的公式（I）的单体制成的共聚物，其中未知数的定义如权利要求1中定义的，以及A2）是来自丙烯酸、甲基丙烯酸等单体组的单体，以及——可选的非离子单体，来自丙烯酰胺、乙烯醇等单体组，其中单体A2和A3共同代表共聚物中50至99.9%（相对于共聚物中单体总数的比例）的单体，至少含有一种硅和至少一种选定的护理产品，其中这些产品对皮肤和头发具有有利效果。
• [EN] N-(3,5-DICHLOROPYRIDIN-4-YL)-2,4,5-ALKOXY AND 2,3,4-ALKOXY BENZAMIDE DERIVATIVES AS PDE-IV (PHOPHODIESTERASE TYPE-IV) INHIBITORS FOR THE TREATMENT OF INFLAMMATORY DISEASES SUCH AS ASTHMA<br/>[FR] DERIVES DE BENZAMIDE N-(3,5-DICHLOROPYRIDINE-4-YLE)-2,4,5-ALCOXY ET 2,3,4 ALCOXY EN TANT QU'INHIBITEURS DE PDE-IV (PHOSPHODIESTERASE DE TYPE IV) POUR TRAITER DES MALADIES INFLAMMATOIRES TELLES QUE L'ASTHME
  申请人：RANBAXY LAB LTD

  公开号：WO2006040645A1

  公开（公告）日：2006-04-20

  The present invention relates to benzamide derivatives, which can be used as selective inhibitors of phosphodiesterase (PDE) type IV, having the structure of Formula (I), its pharmaceutically acceptable salts, pharmaceutically acceptable solvates, enantiomers, diastereomers of N-oxides wherein R1 is hydrogen, alkyl, alkenyl, alkynyl, aryl, cycloalkyl, heteroaryl, heterocyclyl, aralkyl, heterocyclylalkyl, heteroarylalkyl or cycloalkylalkyl; R2 is aryl, heteroaryl, heterocyclyl of cycloalkyl; and R3 is alkyl, alkenyl, alkynyl, aryl, cycloalkyl, heteroaryl, heterocyclyl, aralkyl, heterocyclylalkyl, heteroarylalkyl or cycloalkylalkyl. Compounds disclosed herein can be useful in the treatment of inflammatory diseases, AIDS, asthma, arthritis, bronchitis, chronic obstructer pulmonary disease (COPD), psoriasis, allergic rhinitis, shock, atopic dermatitis, Crohn’ s disease, adult respiratory distress syndrome (ARDS), eosinophilic granuloma, allergic conjunctivitis, osteoarthritis and ulcerative colitis.

  本发明涉及苯甲酰胺衍生物，可用作选择性磷酸二酯酶（PDE）Ⅳ型抑制剂，其具有式（I）的结构，其药学上可接受的盐、药学上可接受的溶剂化合物、N-氧化物的对映体、顺反异构体，其中R1为氢、烷基、烯烃基、炔烃基、芳基、环烷基、杂芳基、杂环烷基、芳基烷基、杂环烷基烷基、杂芳基烷基或环烷基烷基；R2为芳基、杂芳基、杂环烷基或环烷基；R3为烷基、烯烃基、炔烃基、芳基、环烷基、杂芳基、杂环烷基、芳基烷基、杂环烷基烷基、杂芳基烷基或环烷基烷基。本文中披露的化合物可用于治疗炎症性疾病、艾滋病、哮喘、关节炎、支气管炎、慢性阻塞性肺病（COPD）、牛皮癣、过敏性鼻炎、休克、特应性皮炎、克罗恩病、成人呼吸窘迫综合征（ARDS）、嗜酸性肉芽肿、过敏性结膜炎、骨关节炎和溃疡性结肠炎。