Carboxamido-substituted imidazoles from 1,2,3-tricarbonyl derivatives and acetamido-substituted thiazoles from 4-bromo-3-oxo-butanenitriles
نویسندگان
چکیده
منابع مشابه
Synthesis and Characterization of Novel 4-oxo-1,4-dihydroquinoline-3-carboxamide Derivatives from Diazomethane and HCl
Reaction of thionyl chloride with 7-chloro-1-cyclopropyl-6-fluoro-1,4-dihydro-4- oxoquinoline-3-carboxylic acid 1 gave acid chloride 2. Compound 2 was reacted with glycine and D-glutamic acid to afford 2-(7-chloro-1-cyclopropyl-6-fluoro-4-oxo-1,4- dihydroquinoline-3-carbonyl) aminopantandioicacid 3a and 2-(7-chloro-1-cyclopropyl-6- fluoro -4- oxo-1,4-dihydroquinoline-3-carbonyl)aminoacetica...
متن کامل4-Hydroxybenzyl-substituted amino acid derivatives from Gastrodia elata
Seven new 4-hydroxybenzyl-substituted amino acid derivatives (1-7), together with 11 known compounds, were isolated from an aqueous extract of the rhizomes of Gastrodia elata Blume. Their structures were determined by spectroscopic and chemical methods. Compounds 1-3 are pyroglutamate derivatives containing 4-hydroxybenzyl units at the N atom and 4-7 are the first examples of natural products w...
متن کاملSynthesis and Antimicrobial Evaluation of Novel Substituted Acetamido-4-subtituted-thiazole-5-indazole Derivatives
A series of novel molecules containing thiazole and indazole ring structure were designed and synthesized. The compounds are synthesized on gram scale by using series of reactions having vicarious reaction and coupling reactions. We have optimized all the reaction steps for getting good yields. For first time we have synthesized substituted indazole acetic acid which is coupled with different s...
متن کاملFluorescence from bisaryl-substituted maleimide derivatives.
A series of bisaryl-substituted fluorescent maleimides was synthesized via the Heck arylation. The compounds showed broad fluorescence emission bands in the visible region, a large Stokes shift in polar solvents and emission quantum yields varying from 0.04 to 0.71, depending on the structure and solvent medium. The difference in dipole moments of ground and excited electronic states of about 1...
متن کاملSynthesis of series of 1- and 3-differently substituted xanthines from imidazoles.
A new and general method is described for the synthesis, in three steps and in good overall yields, of tetrasubstituted xanthines from an easily prepared imidazole precursor. The method is especially useful for the preparation in standardized conditions of series of xanthines combining a broad variety of primary or secondary alkyl, benzyl or aryl groups at N1 and of alkyl or arylmethyl groups a...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Arkivoc
سال: 2008
ISSN: 1551-7012
DOI: 10.3998/ark.5550190.0009.g12