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Heterocyclic Derivatives (heterocyclic + derivative)
Selected AbstractsSynthesis, Insecticidal and Antimicrobial Activities of Some Heterocyclic Derivatives of Quinazolinone.CHEMINFORM, Issue 10 2007Tripti Singh Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF. [source] Chemoselective Synthesis of Heterocyclic Derivatives of 18-nor Equilenine, 16-Substituted-12H-11-oxa-15-aza-17-thia-cyclopenta[a]phenanthrenene and Their in vitro Evaluation of Antibacterial and Antifungal Activity.CHEMINFORM, Issue 40 2006N. J. Malviya Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF. [source] ChemInform Abstract: ortho-Fused Heterocyclic Derivatives as Efficient Electroluminescent Materials.CHEMINFORM, Issue 27 2002Kazuhiko Tanaka Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source] ChemInform Abstract: Synthesis and Characterization of New Heterocyclic Derivatives by Oxidation of 1-Amino-2-methylindoline.CHEMINFORM, Issue 52 2001L. Peyrot Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source] (4,4-Difluoro-4-bora-3a,4a,-diaza-s-indacen-3-yl)acetaldehyde: Synthesis and chemical propertiesJOURNAL OF HETEROCYCLIC CHEMISTRY, Issue 6 2009Mykola P. Shandura A reaction of 3,5-dimethylborondipyrromethene 3 with the DMF dimethylacetal gives rise to monoenamine 4. The latter is converted to the corresponding aldehyde 5. A considerable contribution of the enolic form of the aldehyde allows preparing numerous 3-vinyl substituted borondipyrromethenes and some heterocyclic derivatives. A reaction of the aldehyde 5 with tertiary aliphatic amines and the consecutive Hofmann-type decomposition of the intermediary quaternary salt give rise to the corresponding dialkylaminovinyl derivatives. J. Heterocyclic Chem., (2009). [source] 2-Trifluoroacetyl-1-methoxycycloalkenes: A convenient precursor for the synthesis of geminated polymethylene trifluoromethyl substituted heterocyclesJOURNAL OF HETEROCYCLIC CHEMISTRY, Issue 2 2009Helio Gauze Bonacorso This article describes the methodology that allows the simultaneous introduction of a trifluoromethyl group and a 7-, 8-, and 10-membered cycloalkane ring fused to heterocyclic derivatives. A series of 10 geminated polymethylene trifluoromethyl substituted isoxazolines, pyrazoles, pyrimidinones, and a pyrazolyl-quinoline were obtained in moderate to good yields from the reaction of three 2-trifluoroacetyl-1-methoxycycloalkenes derived from cycloheptanone, cyclooctanone, and cyclododecanone with hydroxylamine hydrochloride, hydrazine hydrochloride, urea, and 7-chloro-4-hydrazinoquinoline. J. Heterocyclic Chem., (2009). [source] New routes to steroidal heterocyclic derivatives: Synthesis of biologically active pyrazolyl- and isoxazolylpregnene derivativesJOURNAL OF HETEROCYCLIC CHEMISTRY, Issue 1 2007Abdou O. Abdelhamid Pyrazolyl- and isoxazolylpregnene derivatives were synthesized from the appropriate hydrazonoyl chlorides and hydroximoyl chlorides with enaminoprogesterone derivative. The newly synthesized compounds were elucidated by elemental analysis, spectral data and chemical transformation. Some products were tested towards some bacteria and some Fungal-plant pathogens [source] Synthesis of 3-,-amino-2-thiohydantoinsJOURNAL OF HETEROCYCLIC CHEMISTRY, Issue 4 2003Józef Ryczek In the reaction of ethyl isothiocyanatoacetate with diamines, followed by cyclization of the intermediate product, 3-monosubstituted thiohydantoins have been obtained. It was found that the reaction course depends on the purity of the isothiocyanate used and also, in the case of dialkylaminoamines, the self-cyclization occurs. Besides the dialkylamino derivatives of 3-monosubstituted 2-thiohydantoins also new monoalkylamino, amino and heterocyclic derivatives were synthesized. The aryldiazonium derivative of 3-monosubstituted 2-thiohydantoin yielded both respective phenol derivative after hydrolysis and the product of coupling with 2-naphthol. [source] Novel 3,6-Disubstituted 7H -1,2,4-Triazolo[3,4- b][1,3,4]thiadiazines: Synthesis, Characterization, and Evaluation of Analgesic / Anti-inflammatory, Antioxidant ActivitiesARCHIV DER PHARMAZIE, Issue 5 2009Birsen Tozkoparan Abstract In this study, the synthesis of a new series of 3,6-disubstituted-7H -1,2,4-triazolo[3,4- b][1,3,4]thiadiazine 1a,4c compounds derived from 4-amino-3-substituted-1,2,4-triazole-5-thiones 1,4 is described. All of the synthesized compounds were screened for their possible analgesic / anti-inflammatory, antioxidant activities and gastric toxicity. The compound 2c was found to have both significant analgesic and consistent anti-inflammatory activity without inducing any gastric lesions along with minimal lipid peroxidation. A deep insight into the structures of the active compounds revealed that the compounds carrying an electron withdrawing group (a chloride or fluoride) on the phenyl ring at 6-position of the condensed heterocyclic derivatives exhibited noticeable higher activity. [source] | ||||||||||