1-isobutyl-4,9-dihydro-3H-pyrido[3,4-b]indole | 128593-36-2

• 分子结构分类: 有机化合物 - 生物碱及其衍生物 - 哈马拉生物碱
• 英文名称: 1-isobutyl-4,9-dihydro-3H-pyrido[3,4-b]indole
• 英文别名: 1-isobutyl-4,9-dihydro-3H-β-carboline；1-(2-methylpropyl)-4,9-dihydro-3H-pyrido[3,4-b]indole
• CAS: 128593-36-2
• 化学式: C₁₅H₁₈N₂
• 分子量: 226.321
• InChiKey: VDZHRUUNYBRCLR-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.4
• 重原子数：
  17
• 可旋转键数：
  2
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.4
• 拓扑面积：
  28.2
• 氢给体数：
  1
• 氢受体数：
  1

反应信息

• 作为反应物：
  描述：

  1-isobutyl-4,9-dihydro-3H-pyrido[3,4-b]indole 在 还原型辅酶II(NADPH)四钠盐 作用下， 以 aq. phosphate buffer 为溶剂， 以83%的产率得到(R)-1-isobutyl-1,2,3,4-tetrahydro-9H-pyrido[3,4-b]indole
  参考文献：
  名称：

  Stereoselective bioreduction of β-carboline imines through cell-free extracts from earthworms (Eisenia foetida)

  摘要：

  Although remarkable advances have been made over the last decade in organic synthesis, catalysis, and biotechnology, there is still a need to introduce and develop new processes for chemical production to achieve sustainable and cleaner approaches to support the increasing global pharmaceutical/chemical industry. There is a growing need to produce optically active compounds in high yields to maintain and support areas such as pharmaceutical and natural product synthesis. Thus, chemists today are looking for alternative reactions carried out under green conditions. In this context, we describe beta-carboline imine reductions employing cell-free extracts from red Californian earthworms (Eisenia foetida) in high yields and enantiomeric excesses. The enantiomeric excess values of the bioreduction showed no dependence on the imine 1a-g substituents to afford amines with an (R)-configuration. Based on these data, a model for the cell-free extract from the earthworm is proposed. (C) 2013 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tetasy.2013.03.003
• 作为产物：
  描述：

  色胺 在 三乙胺 、 三氯氧磷 作用下， 以 二氯甲烷 、 甲苯 、 乙腈 为溶剂， 反应 10.0h， 生成 1-isobutyl-4,9-dihydro-3H-pyrido[3,4-b]indole
  参考文献：
  名称：

  亚胺还原酶促成空间位阻 1-取代四氢-β-咔啉的不对称合成：酶发现、蛋白质工程和反应开发

  摘要：

  我们报告了通过基因组挖掘发现了一种名为At IRED 的新亚胺还原酶 (IRED)。At IRED上的定点饱和诱变产生了两个单突变体 M118'L 和 P120'G 以及双突变体 M118'L/P120'G，它们对位阻 1-取代的二氢-β-咔啉具有更高的比活性。九种手性 1-取代四氢-β-咔啉 (THβC) 的制备规模合成展示了这些工程 IRED 的合成潜力，包括 (S)-1-t-丁基-THβC和( S )-1- t -戊基-THβC，分离产率为 30–87%，具有出色的光学纯度 (98–99% ee)。

  DOI：

  10.1021/acs.orglett.3c00147

文献信息

• [EN] POLYCYCLIC COMPOUNDS AS POTENT ALPHA2-ADRENOCEPTOR ANTAGONISTS<br/>[FR] COMPOSES POLYCYCLIQUES COMME ANTAGONISTES PUISSANTS DES RECEPTEURS DOLLAR G(A)2-ADRENERGIQUES
  申请人：ORION CORP

  公开号：WO2003082866A1

  公开（公告）日：2003-10-09

  The invention provides a compound of formula I, wherein X, Z, R1 to R10, R15, R16, m, n, r and t are as defined in claim 1, or a pharmaceutically acceptable salt or ester thereof, useful as an alpha-2 antagonist. The compounds of formula I can be used for the treatment of diseases or conditions where antagonists of alpha-2 adrenoceptors are indicated to be effective.

  本发明提供了一种式I的化合物，其中X、Z、R1至R10、R15、R16、m、n、r和t如权利要求1所定义，或其药学上可接受的盐或酯，用作α-2拮抗剂。式I的化合物可用于治疗需要α-2肾上腺素受体拮抗剂有效的疾病或情况。
• 2-Hydroxy-1-substituted-1,2,3,4-tetrahydro-.BETA.-carbolines. The Pictet-Spengler reaction of N-hydroxytryptamine with aldehydes.
  作者：Tohru HINO、Atsushi HASEGAWA、Jin-Jun LIU、Masako NAKAGAWA

  DOI：10.1248/cpb.38.59

  日期：——

  The Pictet-Spengler reaction of N-hydroxytryptamine (6) with various aldehydes was examined. Reduction of 3-(2-nitroethyl) indole (5) with aluminum amalgam gave 6, which was not so stable and was readily oxidized to the azoxy compound (10) in solution under an oxygen atmosphere. Reaction of 6 with saturated aldehydes gave the corresponding nitrones (11b, c) without an acid catalyst at room temperature, while the reaction with α, β-unsaturated aldehydes provided nitrones (11d, e, f) in the presence of trifluoroacetic acid. Cyclization of the nitrones with trifluoroacetic acid in methylene chloride gave the 2-hydroxy-1, 2, 3, 4-tetrahydro-β-carbolines (2) in good yields. The cyclization of the saturated nitrones proceeded rapidly, whereas the similar reaction of the unsaturated nitrones was slow. Direct Pictet-Spengler reaction of 6 with aldehydes in methylene chloride in the presence of trifluoroacetic acid gave 2a, b, c in excellent yields. Dehydration of the 2-hydroxy-β-carboline (2b) with trifluoroacetic anhydride in benzene gave the 3, 4-dihydro-β-carboline (15). 6-Bromo-5-methoxy-N-hydroxytryptamine (25) was prepared from 3-bromo-4-methyoxyaniline (17) via the indole (22). The Pictet-Spengler reaction of 25 with isovaleraldehyde gave the 2-hydroxy-tetrahydro-β-carboline (26).

  N-羟基色氨酸（6）与各种醛的Pictet-Spengler反应进行了研究。用铝汞还原3-(2-硝基乙基)吲哚（5）得到6，但该化合物不太稳定，容易在氧气气氛下氧化为氮氧化物（10）。在室温下，6与饱和醛的反应生成相应的亚硝酮（11b，c），而与α, β-不饱和醛的反应则在三氟乙酸存在下生成亚硝酮（11d，e，f）。亚硝酮与三氟乙酸在二氯甲烷中环化良好，得到了2-羟基-1, 2, 3, 4-四氢-β-卡伯林（2），产率可观。饱和亚硝酮的环化反应进展迅速，而不饱和亚硝酮的相似反应则较慢。在二氯甲烷中，6与醛的直接Pictet-Spengler反应在三氟乙酸的存在下优异地生成2a，b，c。用三氟乙酸酐在苯中脱水得到2-羟基-β-卡伯林（2b）的3, 4-二氢-β-卡伯林（15）。由3-溴-4-甲氧基苯胺（17）通过吲哚（22）合成了6-溴-5-甲氧基-N-羟基色氨酸（25）。25与异戊醛的Pictet-Spengler反应生成2-羟基-四氢-β-卡伯林（26）。
• A Simple Method for the Synthesis of 1-Substituted β-Carboline Derivatives from Tryptamine and Carboxylic Acids in Polyphosphoric Acid
  作者：Iliyan Ivanov、Stoyanka Nikolova、Stela Statkova-Abeghe

  DOI：10.3987/com-05-10484

  日期：——

  A number of 1-substituted 3,4-dihydro-9H-β-carboline derivatives (4) with high purity and yields have been synthesized by treating of tryptamine (1) with carboxylic acids (2) in polyphosphoric acid. 3,4-Dihydro-9Η-β-carbolines (4) were successfully transformed to 1,2,3,4-tetrahydro-9H-β-carbolines (5) and 9H-β-carbolines (6).

  通过在多磷酸中用羧酸 (2) 处理色胺 (1) 合成了许多具有高纯度和收率的 1-取代的 3,4-二氢-9H-β-咔啉衍生物 (4)。3,4-二氢-9H-β-咔啉 (4) 成功转化为 1,2,3,4-四氢-9H-β-咔啉 (5) 和 9H-β-咔啉 (6)。
• Polycyclic compounds as potent alpha2-adrenoceptor antagonists
  申请人：Din Belle David

  公开号：US20060094740A1

  公开（公告）日：2006-05-04

  A compound of formula 1, wherein X, Z, R 1 to R 10 , R 15 , R 16 , m, n, r and t are as defined in claim 1, or a pharmaceutically acceptable salt or ester thereof, useful as an alpha-2 antagonist. The compounds of formula I can be used for the treatment of diseases or conditions where antagonists of alpha-2 adrenoceptors are indicated to be effective.

  一种公式1的化合物，其中X，Z，R1至R10，R15，R16，m，n，r和t如权利要求1中所定义，或其药学上可接受的盐或酯，可用作α-2拮抗剂。公式I的化合物可用于治疗需要α-2肾上腺素能受体拮抗剂有效的疾病或情况。
• Enantioselective Imine Reduction of Dihydro-β-carbolines by Fe-Thiosquaramide Catalyst
  作者：Manda Sathish、Fabiane M. Nachtigall、Leonardo S. Santos

  DOI：10.1021/acs.orglett.2c03093

  日期：2022.10.21

  Enantioselective imine reduction of dihydro-β-carbolines (DHBCs) is a reliable and powerful tool to construct bioactive chiral tetrahydro-β-carbolines (THBCs). Here, we report an efficient enantioselective imine reduction employing in situ generated Fe-thiosquaramides (Fe-TSQs) 3a and 3b as asymmetric organometallic catalysts to produce chiral THBCs (2a–h). The catalyst 3a at 15 mol % was found to

  二氢-β-咔啉 (DHBC) 的对映选择性亚胺还原是构建具有生物活性的手性四氢-β-咔啉 (THBC) 的可靠且强大的工具。在这里，我们报告了一种有效的对映选择性亚胺还原，采用原位生成的 Fe-thiosquaramides (Fe-TSQs) 3a和3b作为不对称有机金属催化剂来生产手性 THBC ( 2a – h )。发现 15 mol%的催化剂3a适用于具有烷基和芳基的底物，这些底物提供具有优异对映选择性（高达 ee 99%）的相应手性 THBC。