N-[1-(3-Methoxy-1,3-dihydroisobenzofuran-1-yl)-1-methyl-ethyl]-hydroxylamine | 189019-40-7

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 异香豆素
• 英文名称: N-[1-(3-Methoxy-1,3-dihydroisobenzofuran-1-yl)-1-methyl-ethyl]-hydroxylamine
• 英文别名: N-[2-(3-methoxy-1,3-dihydro-2-benzofuran-1-yl)propan-2-yl]hydroxylamine
• CAS: 189019-40-7
• 化学式: C₁₂H₁₇NO₃
• 分子量: 223.272
• InChiKey: PVBGYHUKPNISMV-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  0.9
• 重原子数：
  16
• 可旋转键数：
  3
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.5
• 拓扑面积：
  50.7
• 氢给体数：
  2
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  N-[1-(3-Methoxy-1,3-dihydroisobenzofuran-1-yl)-1-methyl-ethyl]-hydroxylamine 在 盐酸 作用下， 以 四氢呋喃 为溶剂， 反应 1.25h， 以67%的产率得到3,3-二甲基-2-羟基-4H-异喹啉-4-酚
  参考文献：
  名称：

  Cyclic Nitrone Free Radical Traps:  Isolation, Identification, and Synthesis of 3,3-Dimethyl-3,4-dihydroisoquinolin-4-ol N-Oxide, a Metabolite with Reduced Side Effects

  摘要：

  A C-4 hydroxylated metabolite (2, 3,3-dimethyl-3,4-dihydroisoquinolin-4-ol N-oxide) of the previously described cyclic nitrone free radical trap 1 (3,3-dimethyl-3, 4-dihydroisoquinoline N-oxide, a cyclic analog of phenyl-tert-butylnitrone (PBN)) was isolated, identified, and synthesized. The metabolite (2), though a less potent antioxidant than 1 in an in vitro lipid peroxidation assay, showed greatly reduced acute toxicity and sedative properties. Several analogs of 2 were prepared in attempts to improve on its weak antioxidant activity while retaining the desirable side effect profile. Effective structural changes included replacement of the gem-dimethyl moiety with spirocycloalkane groups and/or oxidation of the alcohols to the corresponding ketones. All of the analogs were more lipophilic (log K'(w)) and more active in the standard lipid peroxidation assay than 2. In addition, some of the compounds were able to protect cerebellar granule cells against oxidative damage (an in vitro model of oxidative brain injury) with IC50 values well below the value of the lead compound 1. The ketones, as predicted, were much more potent than 2 (and 1) in both of the above assays (up to ca. 200-fold). However, only compounds with a hydroxyl or an acetate group at C-4 displayed significantly reduced acute toxicity and sedative properties relative to those of 1. Importantly, the diminishment of toxicity and sedation were not the result of a lack of brain penetration as both 2 and the corresponding ketone (3,3-dimethyl-3,4-dihydro-3H-isoquinolin-4-one N-oxide) achieved equal or greater brain levels than those of 1 when administered to rats ip.

  DOI：

  10.1021/jm960244n
• 作为产物：
  描述：

  1-Methoxy-3-(1-methyl-1-nitroethyl)-1,3-dihydroisobenzofuran 在 aluminum amalgam 、 水 作用下， 以 乙醚 为溶剂， 以43%的产率得到N-[1-(3-Methoxy-1,3-dihydroisobenzofuran-1-yl)-1-methyl-ethyl]-hydroxylamine
  参考文献：
  名称：

  Cyclic Nitrone Free Radical Traps:  Isolation, Identification, and Synthesis of 3,3-Dimethyl-3,4-dihydroisoquinolin-4-ol N-Oxide, a Metabolite with Reduced Side Effects

  摘要：

  A C-4 hydroxylated metabolite (2, 3,3-dimethyl-3,4-dihydroisoquinolin-4-ol N-oxide) of the previously described cyclic nitrone free radical trap 1 (3,3-dimethyl-3, 4-dihydroisoquinoline N-oxide, a cyclic analog of phenyl-tert-butylnitrone (PBN)) was isolated, identified, and synthesized. The metabolite (2), though a less potent antioxidant than 1 in an in vitro lipid peroxidation assay, showed greatly reduced acute toxicity and sedative properties. Several analogs of 2 were prepared in attempts to improve on its weak antioxidant activity while retaining the desirable side effect profile. Effective structural changes included replacement of the gem-dimethyl moiety with spirocycloalkane groups and/or oxidation of the alcohols to the corresponding ketones. All of the analogs were more lipophilic (log K'(w)) and more active in the standard lipid peroxidation assay than 2. In addition, some of the compounds were able to protect cerebellar granule cells against oxidative damage (an in vitro model of oxidative brain injury) with IC50 values well below the value of the lead compound 1. The ketones, as predicted, were much more potent than 2 (and 1) in both of the above assays (up to ca. 200-fold). However, only compounds with a hydroxyl or an acetate group at C-4 displayed significantly reduced acute toxicity and sedative properties relative to those of 1. Importantly, the diminishment of toxicity and sedation were not the result of a lack of brain penetration as both 2 and the corresponding ketone (3,3-dimethyl-3,4-dihydro-3H-isoquinolin-4-one N-oxide) achieved equal or greater brain levels than those of 1 when administered to rats ip.

  DOI：

  10.1021/jm960244n

文献信息

• Cyclic nitrones
  申请人：Hoechst Marion Roussel Inc.

  公开号：US05962469A1

  公开（公告）日：1999-10-05

  The present invention is directed to novel cyclic nitrones and their use in the prevention of oxidation tissue damage by free radicals, their use in the treatment of a number of disease states in which radicals either damage or destroy tissues via oxidation, and pharmaceutical compositions containing these cyclic nitrones.

  本发明涉及新颖的环状亚硝基甲酮及其在预防自由基氧化组织损伤中的应用，其在治疗一些疾病状态中的应用，这些疾病状态中自由基通过氧化损伤或破坏组织，并含有这些环状亚硝基甲酮的药物组合物。
• CYCLIC NITRONES AND PHARMACEUTICAL COMPOSITIONS CONTAINING THEM
  申请人：Aventis Pharmaceuticals Inc.

  公开号：EP0863878B1

  公开（公告）日：2003-01-08
• US5962469A
  申请人：——

  公开号：US5962469A

  公开（公告）日：1999-10-05
• [EN] CYCLIC NITRONES AND PHARMACEUTICAL COMPOSITIONS CONTAINING THEM<br/>[FR] NITRONES CYCLIQUES ET COMPOSITIONS PHARMACEUTIQUES LES CONTENANT
  申请人：HOECHST MARION ROUSSEL, INC.

  公开号：WO1997010218A1

  公开（公告）日：1997-03-20

  (EN) The present invention is directed to novel cyclic nitrones of the formula (I) in which R1 and R2 are each independently represented by a C1-3 alkyl or R1 and R2 together form a C5-6 alkylene ring or a ring of structure (a), Z represents (CHx)n, wherein x and n are independently 0 or an integer from 1-2; R3 is represented by a substituent selected from the group consisting of hydrogen, C1-4 alkyl, OH, OAc or (b); and the ring represented by X is a substituent selected from the group consisting of (c), (d), (e) or (f) wherein the area of dark shading represents the side of attachment to the nitrone ring, R4, R5, R6 and R7 are independently selected from the group consisting of hydrogen, C1-3 alkyl, OH or C1-3 alkoxy and the pharmaceutically acceptable salts thereof, with the proviso that when R1 and R2 together form a C5-6 alkylene ring and n is 1, then R3 cannot be hydrogen and their use in the prevention of oxidation tissue damage by free radicals, their use in the treatment of a number of disease states in which radicals either damage or destroy tissues via oxidation, and pharmaceutical compositions containing these cyclic nitrones.(FR) Nouveaux nitrones cycliques de formule (I) dans laquelle R1 et R2 sont chacun indépendamment représentés par un alkyle C1-3 ou bien R1 et R2 forment ensemble un cycle alkylène C5-6 ou un cycle de structure (a), Z représente (CHx)n, x et n étant indépendamment 0 ou le nombre entier 1 ou 2, R3 est un substituant choisi dans le groupe constitué d'hydrogène, d'alkyle C1-4, de OH, de OAc ou de (b), et le cycle représenté par X est un substituant choisi dans le groupe constitué de (c), (d), (e) ou (f), la partie foncée représentant le côté de liaison au cycle nitrone, R4, R5, R6 et R7 sont indépendamment choisis dans le groupe constitué d'hydrogène, d'alkyle C1-3, de OH ou d'alcoxy C1-3, et sels pharmaceutiquement acceptables desdits nitrones, à condition que lorsque R1 et R2 forment ensemble un cycle alkylène C5-6 et que n est 1, R3 ne puisse pas être hydrogène. La présente invention concerne également l'utilisation desdits nitrones dans la prévention de l'oxydation des tissus provoquée par les radicaux libres, leur utilisation dans le traitement d'un certain nombre de maladies dans lesquelles les radicaux provoquent soit des lésions, soit une destruction des tissus par oxydation, et des compositions pharmaceutiques contenant lesdits nitrones cycliques.
• Cyclic Nitrone Free Radical Traps:  Isolation, Identification, and Synthesis of 3,3-Dimethyl-3,4-dihydroisoquinolin-4-ol <i>N</i>-Oxide, a Metabolite with Reduced Side Effects
  作者：Craig E. Thomas、Patrick Bernardelli、S. Marc Bowen、Stephen F. Chaney、Dirk Friedrich、David A. Janowick、Bryan K. Jones、Frederick J. Keeley、John H. Kehne、Bert Ketteler、David F. Ohlweiler、Leo A. Paquette、David J. Robke、Thomas L. Fevig

  DOI：10.1021/jm960244n

  日期：1996.1.1

  A C-4 hydroxylated metabolite (2, 3,3-dimethyl-3,4-dihydroisoquinolin-4-ol N-oxide) of the previously described cyclic nitrone free radical trap 1 (3,3-dimethyl-3, 4-dihydroisoquinoline N-oxide, a cyclic analog of phenyl-tert-butylnitrone (PBN)) was isolated, identified, and synthesized. The metabolite (2), though a less potent antioxidant than 1 in an in vitro lipid peroxidation assay, showed greatly reduced acute toxicity and sedative properties. Several analogs of 2 were prepared in attempts to improve on its weak antioxidant activity while retaining the desirable side effect profile. Effective structural changes included replacement of the gem-dimethyl moiety with spirocycloalkane groups and/or oxidation of the alcohols to the corresponding ketones. All of the analogs were more lipophilic (log K'(w)) and more active in the standard lipid peroxidation assay than 2. In addition, some of the compounds were able to protect cerebellar granule cells against oxidative damage (an in vitro model of oxidative brain injury) with IC50 values well below the value of the lead compound 1. The ketones, as predicted, were much more potent than 2 (and 1) in both of the above assays (up to ca. 200-fold). However, only compounds with a hydroxyl or an acetate group at C-4 displayed significantly reduced acute toxicity and sedative properties relative to those of 1. Importantly, the diminishment of toxicity and sedation were not the result of a lack of brain penetration as both 2 and the corresponding ketone (3,3-dimethyl-3,4-dihydro-3H-isoquinolin-4-one N-oxide) achieved equal or greater brain levels than those of 1 when administered to rats ip.