Fischer indolisation of 2,6-dialkyl and 2,4,6-trialkylphenylhydrazones of diketones and ketoesters
摘要:
Unlike the migration of a methyl group observed in the ZnCl2 or acetic acid-catalysed indolisation of phenylhydrazones, dry ethanolic HCl catalysed indolisation of 2,6-dimethyl- and 2,4,6-trimethylphenylhydrazones of various substituted butane-2,3-diones and ethyl pyruvates yields 7-methyl- and 5,7-dimethyl-3-substituted indoles indicating elimination of an ortho-methyl group during indolisation. (C) 2003 Elsevier Ltd. All rights reserved.
Amino-Indolyl-Substituted Imidazolyl-Pyrimidines and Their Use as Medicaments
申请人:BOEHRINGER INGELHEIM INTERNATIONAL GMBH
公开号:US20130281430A1
公开(公告)日:2013-10-24
The invention relates to new amino-indole-substituted imidazolyl-pyrimidines of formula 1
wherein
R
1
, R
2
, R
3
, R
4
and R
5
are defined as in claim
1
and pharmaceutically acceptable salts thereof and the use of these compounds for the preparation of a medicament for treating a disease selected from asthma, COPD, rheumatoid arthritis, specific lymphomas and specific diseases of the nervous system.
Efficient and general synthesis of oxazino[4,3-a]indoles by cascade addition-cyclization reactions of (1H-indol-2-yl)methanols and vinyl sulfonium salts
An efficient and general approach to oxazino[4,3-a]indole architectures is described. The addition-cyclization cascade of (1H-indol-2-yl)methanols with vinyl sulfonium salts affords oxazino[4,3-a]indole derivatives in high yields.
The First Potent and Selective Non-Imidazole Human Histamine H<sub>4</sub> Receptor Antagonists
作者:Jill A. Jablonowski、Cheryl A. Grice、Wenying Chai、Curt A. Dvorak、Jennifer D. Venable、Annette K. Kwok、Kiev S. Ly、Jianmei Wei、Sherry M. Baker、Pragnya J. Desai、Wen Jiang、Sandy J. Wilson、Robin L. Thurmond、Lars Karlsson、James P. Edwards、Timothy W. Lovenberg、Nicholas I. Carruthers
DOI:10.1021/jm0341047
日期:2003.9.1
Following the discovery of the human histamine H(4) receptor, a high throughput screen of our corporate compound histamine H(4) receptor antagonists to be described.
The Fischer Indole Synthesis. V. 2-Carbethoxy-4,7-dimethylindole from Ethyl Pyruvate 2,6-Dimethylphenylhydrazone<sup>1</sup>
作者:Robert B. Carlin、William O. Henley、D. Peter Carlson