Regiospecific Synthesis of Mono-N-substituted Indolopyrrolocarbazoles
作者:Wolfgang Fröhner、Barbara Monse、Tobias M. Braxmeier、Laura Casiraghi、Heidi Sahagún、Pierfausto Seneci
DOI:10.1021/ol051550a
日期:2005.10.1
Two complementary and efficient strategies have been developed for the regiospecific synthesis of unsymmetrical indolopyrrolocarbazoles (IPCs) mono-N-substituted with a pentacycle. A halogen in position 2 of the intermediate bisindolylmaleimides 3a-e allows a selective Mitsunobu coupling by exploiting the increased acidity of the 2-chloro-substituted indole nitrogen. It also promotes an easier cyclization of bisindolylmaleimides 4a-e and 7b-e to IPCs. Alkylation of the 2-unsubstituted indole-3-carboxamides 2a,b and further processing to the corresponding IPCs gives access to the opposite regioisomers.
BERGMAN J.; CARLSON R.; SJOEBERG B., J. HETEROCYCL. CHEM. <JHTC-AD>, 1977, 14, NO 7, 1123-1134
作者:BERGMAN J.、 CARLSON R.、 SJOEBERG B.
DOI:——
日期:——
US7262215B2
申请人:——
公开号:US7262215B2
公开(公告)日:2007-08-28
[EN] N-CARBACYCLE MONOSUBSTITUTED INDOLOCARBAZOLES AS PROTEIN KINASE INHIBITORS<br/>[FR] INDOLOCARBAZOLES MONOSUBSTITUES A N-CARBACYCLES UTILISES COMME INHIBITEURS DE PROTEINE-KINASE
申请人:NAD AG
公开号:WO2003051887A1
公开(公告)日:2003-06-26
This invention relates to N-carbacycle monosubstituted indolocarbazole compounds. Furthermore, this invention relates to medicaments comprising N-carbacycle monosubstituted indolocarbazoles compounds and the use of such compounds for treating non-insulin dependent diabetes mellitus, acute stroke and other neurotraumatic injuries, for treating diabetes mellitus, as a chemotherapeutic for the treatment of various malignant diseases, for treating diseases caused by malfunctioning of specific signaling pathways, and for treating neurodegenerative diseases such as for example Alzheimer's disease.
A cascade reaction for the new and direct synthesis of indolofuroquinoxalines
作者:Satish P. Nikumbh、Akula Raghunadh、T. Srinivasa Rao、V. Narayana Murthy、Suju C. Joseph、Y. L. N. Murthy、Manojit Pal
DOI:10.1039/c6ra03556f
日期:——
7H-indolo[3′,2′:4,5]furo[2,3-b]quinoxaline derivatives are synthesized directly from methyl 2-(2-chloro-1H-indol-3-yl)-2-oxoacetate or its N-alkyl derivatives under neutral or mildly acidic conditions. This new one-pot methodology was found to be general and greener as it avoids the use of environmentally harmful POCl3 and strong alkali required for the previously reported method. It is also amenable for scale-up
7 H-吲哚并[3',2':4,5]呋喃[2,3- b ]喹喔啉衍生物是直接由甲基2-(2-氯-1 H-吲哚-3-基)-2-合成的在中性或中度酸性条件下的氧代乙酸酯或其N-烷基衍生物。发现这种新的一锅法是通用且更绿色的方法,因为它避免了使用先前报道的方法所需的对环境有害的POCl 3和强碱。它也适合扩大规模。