Transition metals in organic synthesis - Part 83#: Synthesis and pharmacological potential of carbazoles
作者:Taylor A. Choi、Regina Czerwonka、Ronny Forke、Anne Jäger、Jan Knöll、Micha P. Krahl、Tilo Krause、Kethiri R. Reddy、Scott G. Franzblau、Hans-Joachim Knölker
DOI:10.1007/s00044-007-9073-0
日期:2008.6
the first naturally occurring carbazole alkaloids with antituberculosis (anti-TB) activity, clausine K and micromeline, a study on the structure–activity relationships for anti-TB-active carbazolederivatives has been carried out. The 6-oxygenated carbazoles glycozoline and glycozolinine show antibiotic activity towards several microorganisms. The 7-oxygenated carbazole siamenol exhibits anti-HIV activity
First total synthesis of the 7-oxygenated carbazole alkaloids clauszoline-K, 3-formyl-7-hydroxycarbazole, clausine M, clausine N and the anti-HIV active siamenol using a highly efficient palladium-catalyzed approach
作者:Micha P. Krahl、Anne Jäger、Tilo Krause、Hans-Joachim Knölker
DOI:10.1039/b607792g
日期:——
Using a convergent palladium-catalyzed construction of the carbazole framework as the key step we have achieved a short synthesis of the 7-oxygenated carbazolealkaloids clauszoline-K, 3-formyl-7-hydroxycarbazole, clausine C (clauszoline-L), clausine M, clausine N and the anti-HIV active siamenol.
Synthesis of Carbazoles and Related Heterocycles from Sulfilimines by Intramolecular C−H Aminations
作者:Xianhai Tian、Lina Song、A. Stephen K. Hashmi
DOI:10.1002/anie.202000146
日期:2020.7.20
While direct nitrene insertions into C−H bonds have become an important tool for building C−N bonds in modern organic chemistry, the generation of nitrene intermediates always requires transition metals, high temperatures, ultraviolet or laser light. We report a mild synthesis of carbazoles and related buildingblocksthrough a visible light‐induced intramolecular C−H amination reaction. A striking advantage
虽然氮烯直接插入 C−H 键已成为现代有机化学中构建 C−N 键的重要工具,但氮烯中间体的生成始终需要过渡金属、高温、紫外线或激光。我们报告了通过可见光诱导的分子内 C−H 胺化反应温和合成咔唑和相关结构单元。这种新方法的一个显着优点是使用更具反应性的芳基硫亚胺代替相应的危险叠氮化物。测试了不同的催化剂和不同的光源。反应范围广,产物收率普遍较高。Clausine C 的高效克级合成证明了这种新方法的适用性和可扩展性。