Zur Synthese von 3-Amino-pyrrolen durch Thorpe-Ziegler-Cyclisierung
摘要:
N-Aryl and alkylaminomethylene cyanacetic acid derivatives 1 react with alpha-halogencarbonyl compounds 2 in the presence of potassium carbonate/sodium ethoxide to yield the substituted 3-amino-pyrroles 6. Using the same principle of cyclization pyrrole derivatives 6 can also be obtained by reaction of beta-chloro- and beta-alkoxymethylenemalononitriles 4 with beta-aminocarbonyl compounds 5. From the malononitrile derivatives 1 containing the methylthio group in the beta-position, and alpha-halogen ketones 7, the 2-dicyanomethylene oxazolines 8 arise which undergo alkoholysis by treatment with sodium alkoxide to form the 3-amino-5-alkoxy-pyrrole derivatives 9.
1,1′-Dicyano-2-substituted ethylenes: A new class of glucose uptake inhibitors in antifilarial chemotherapy
摘要:
Several 1,1'-dicyano-2-substituted ethylenes (2-16) were synthesized and evaluated for in vivo antifilarial activity. Some of the screened compounds showed significant antifilarial response against Acanthocheilonema viteae in rodents. (C) 1997 Elsevier Science Ltd.
Enamine Derivatives of Malonic Acid with Pharmacologic Activities
作者:Arthur A. Santilli、William F. Bruce、T. S. Osdene
DOI:10.1021/jm00331a015
日期:1964.1
Zur Synthese von 3-Amino-pyrrolen durch Thorpe-Ziegler-Cyclisierung
作者:K. Gewald、H. Sch�fer、P. Bellmann、U. Hain
DOI:10.1002/prac.19923340608
日期:——
N-Aryl and alkylaminomethylene cyanacetic acid derivatives 1 react with alpha-halogencarbonyl compounds 2 in the presence of potassium carbonate/sodium ethoxide to yield the substituted 3-amino-pyrroles 6. Using the same principle of cyclization pyrrole derivatives 6 can also be obtained by reaction of beta-chloro- and beta-alkoxymethylenemalononitriles 4 with beta-aminocarbonyl compounds 5. From the malononitrile derivatives 1 containing the methylthio group in the beta-position, and alpha-halogen ketones 7, the 2-dicyanomethylene oxazolines 8 arise which undergo alkoholysis by treatment with sodium alkoxide to form the 3-amino-5-alkoxy-pyrrole derivatives 9.
1,1′-Dicyano-2-substituted ethylenes: A new class of glucose uptake inhibitors in antifilarial chemotherapy
Several 1,1'-dicyano-2-substituted ethylenes (2-16) were synthesized and evaluated for in vivo antifilarial activity. Some of the screened compounds showed significant antifilarial response against Acanthocheilonema viteae in rodents. (C) 1997 Elsevier Science Ltd.