6-(2-hydroxyethyl)-2,2-dimethyl-2H-1-benzopyran

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 苯并吡喃
• 英文名称: 6-(2-hydroxyethyl)-2,2-dimethyl-2H-1-benzopyran
• 英文别名: 2-(2,2-dimethyl-2H-chromen-6-yl)ethanol；2-(2,2-dimethylchromen-6-yl)ethanol
• 化学式: C₁₃H₁₆O₂
• 分子量: 204.269
• InChiKey: LYDCGGUVPCALHC-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.9
• 重原子数：
  15
• 可旋转键数：
  2
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.38
• 拓扑面积：
  29.5
• 氢给体数：
  1
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  6-(2-hydroxyethyl)-2,2-dimethyl-2H-1-benzopyran 在 四溴化碳 、 三苯基膦 作用下， 以 二氯甲烷 为溶剂， 反应 0.5h， 以78%的产率得到6-(2-bromoethyl)-2,2-dimethyl-2H-chromene
  参考文献：
  名称：

  New Class of Algicidal Compounds and Fungicidal Activities Derived from a Chromene Amide of Amyris texana

  摘要：

  A chromene amide, N-[2-(2,2-dimethyl-2H-1-benzopyran-6-yl)ethyl]-N,3-dimethylbutanamide, was isolated from the EtOAc extract of the leaves of Amyris texana and found to have moderate antifungal activity against Colletotrichum spp. and selective algicidal activity against Planktothrix perornata, a cyanobacterium (blue-green alga) that causes musty off-flavor in farm-raised channel catfish (Ictalurus punctatus). To improve the selective algicidal activity and provide water solubility, a series of chromene analogues were synthesized and evaluated for algicidal activity using a 96-well microplate rapid bioassay. In addition, the chromene analogues were evaluated for antifungal and phytotoxic activities. Hydrochloride salts of a chromene amine analogue showed improved water solubility and selectivity toward P. perornata with activity comparable to that of the naturally occurring chromene amide.

  DOI：

  10.1021/jf101626g
• 作为产物：
  描述：

  对羟基苯乙醇 在 碘 、 sodium hydride 、 1,8-二氮杂双环[5.4.0]十一碳-7-烯 作用下， 以 二氯甲烷 、 N,N-二甲基甲酰胺 、 甲苯 为溶剂， 反应 6.0h， 生成 6-(2-hydroxyethyl)-2,2-dimethyl-2H-1-benzopyran
  参考文献：
  名称：

  异戊二烯基：通用的羟基保护基，在温和条件下可化学选择性除去

  摘要：

  二氯甲烷中的碘（在对酸敏感的底物存在3Å分子筛的情况下）和二氯甲烷-水（9：1）中的2,3-二氯-5,6-二氰基醌（DDQ）是裂解异戊二烯的温和有效方法醚。这些反应条件与其他保护基如缩醛，乙酸酯，烯丙基，苄基和TBDPS基团的存在相容。芳基异戊烯基醚暴露于碘导致通过串联的Friedel-Crafts /碘环化反应以可接受的收率形成3-碘-2,2-二甲基苯并二氢吡喃衍生物。两种碘化二甲基苯并二氢吡喃衍生物的简单一步转化就可以合成其中的天然黄酮类化合物：抗氧化剂花椒酚。

  DOI：

  10.1016/s0040-4020(02)00539-2

文献信息

• [EN] COMPOSITIONS AND METHODS FOR REPELLING BLOOD-SUCKING AND BITING INSECTS, TICKS AND MITES<br/>[FR] COMPOSITIONS ET MÉTHODES PERMETTANT DE REPOUSSER LES INSECTES, LES TIQUES ET LES MITES PIQUANTS ET SUCEURS DE SANG
  申请人：US AGRICULTURE

  公开号：WO2014137811A1

  公开（公告）日：2014-09-12

  Chromene derivatives based on a chromene amide isolated from Amyris texana. Also disclosed are compositions containing chromene derivatives (synthetic or natural) based on a chromene amide isolated from Amyris texana. Also methods for repelling blood-sucking and biting insects, ticks and mites involving treating (or exposing) an object (e.g., mammals such as humans) or area (e.g., a surface such as human skin) with a blood-sucking and biting insects, ticks and mites repelling effective amount of at least one compound selected from chromene derivatives (synthetic or natural) based on a chromene amide isolated from Amyris texana.

  基于从Amyris texana中分离出的一种chromene酰胺衍生物的chromene衍生物。还公开了含有基于Amyris texana中分离出的chromene酰胺的chromene衍生物（合成或天然）的组合物。还公开了用于驱避吸血和咬人的昆虫、蜱和螨虫的方法，该方法涉及使用至少一种从Amyris texana中分离出的chromene酰胺衍生物为基础的chromene衍生物（合成或天然）的驱避有效量处理（或暴露）物体（例如哺乳动物，如人类）或区域（例如表面，如人类皮肤）。
• The prenyl group: a versatile hydroxy protecting group, removable chemoselectively under mild conditions
  作者：Jean-Michel Vatèle

  DOI：10.1016/s0040-4020(02)00539-2

  日期：2002.7

  6-dicyanoquinone (DDQ) in dichloromethane–water (9:1) are mild and efficient methods to cleave prenyl ethers. These reaction conditions are compatible with the presence of other protecting groups such as acetals, acetates, allyl, benzyl and TBDPS groups. Exposure of aryl prenyl ethers to iodine led to the formation of 3-iodo-2,2-dimethylchroman derivatives in acceptable yields via a tandem Friedel–Crafts/iodocyclization

  二氯甲烷中的碘（在对酸敏感的底物存在3Å分子筛的情况下）和二氯甲烷-水（9：1）中的2,3-二氯-5,6-二氰基醌（DDQ）是裂解异戊二烯的温和有效方法醚。这些反应条件与其他保护基如缩醛，乙酸酯，烯丙基，苄基和TBDPS基团的存在相容。芳基异戊烯基醚暴露于碘导致通过串联的Friedel-Crafts /碘环化反应以可接受的收率形成3-碘-2,2-二甲基苯并二氢吡喃衍生物。两种碘化二甲基苯并二氢吡喃衍生物的简单一步转化就可以合成其中的天然黄酮类化合物：抗氧化剂花椒酚。
• New Class of Algicidal Compounds and Fungicidal Activities Derived from a Chromene Amide of Amyris texana
  作者：Kumudini M. Meepagala、Kevin K. Schrader、Charles L. Burandt、David E. Wedge、Stephen O. Duke

  DOI：10.1021/jf101626g

  日期：2010.9.8

  A chromene amide, N-[2-(2,2-dimethyl-2H-1-benzopyran-6-yl)ethyl]-N,3-dimethylbutanamide, was isolated from the EtOAc extract of the leaves of Amyris texana and found to have moderate antifungal activity against Colletotrichum spp. and selective algicidal activity against Planktothrix perornata, a cyanobacterium (blue-green alga) that causes musty off-flavor in farm-raised channel catfish (Ictalurus punctatus). To improve the selective algicidal activity and provide water solubility, a series of chromene analogues were synthesized and evaluated for algicidal activity using a 96-well microplate rapid bioassay. In addition, the chromene analogues were evaluated for antifungal and phytotoxic activities. Hydrochloride salts of a chromene amine analogue showed improved water solubility and selectivity toward P. perornata with activity comparable to that of the naturally occurring chromene amide.

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