Zobrazeno 1 - 10
of 40
pro vyhledávání: '"Ashraf, M. A."'
Publikováno v:
ChemInform. 45
An efficient tandem C—N, C—O bond formation reaction is developed for the synthesis of title compounds (III), (VI) and related homologues (V).
Publikováno v:
ChemInform. 44
A variety of new fused thienopyrimidine derivatives are synthesized from thienopyrimidinethione (I) or -hydrazine (IX) and evaluated for their cytotoxicity and antioxidant activity.
Publikováno v:
ChemInform. 41
Quinoline derivatives substituted with tetrazolyl or triazolyl moieties, as well as their glycoside derivatives are synthesized to find new leads for anticancer screening.
Publikováno v:
ChemInform. 41
With a view to obtaining pharmacologically active compounds the title triazoles are prepared.
Publikováno v:
ChemInform. 25
The pharmacodynamic properties1-3 of substituted amino pyrazines as well as their importance in the synthesis of pteridine and other polyfused heterocyclic systems is well known4,5. In this investigation we aim to prepare a new series of condensed he
Publikováno v:
ChemInform. 28
Novel heterocyclic compounds were prepared by the reaction of 2-acetyl-2-oxopropylidene s,s-acetal with different amino compounds namely, hydrazine hydrate, phenylhydrazine, guanidine hydrochloride, thiosemicarbazide, o-phenylenediamine, o-aminopheno
Autor:
Ahmed Khodairy, Ashraf M. El-Sayed
Publikováno v:
ChemInform. 29
Arylmethylenemalononitriles 1 were treated with halo compounds under phase transfer catalysis (PTC) conditions to yield α-polyfunctional arylmethylene-malononitrile derivatives 2–4. The treatment of compounds 2–4 with hydrazine hydrate gave pyri
Publikováno v:
ChemInform. 32
1,3-Dihydro-4-phenyl-1,5-benzodiazepin-2-one 1 was treated with bromine in 1:1 molar ratio to get the corresponding 3-bromo derivative 2 which in turn reacted with different nucleophiles to get the corresponding 3-substituted derivatives 3–11. The
Autor:
Ashraf A. Aly, Alan B. Brown, Talaatt I. El-Emary, Ashraf M. Mohamed Ewas, Mohamed I. Ramadan
Publikováno v:
ChemInform. 40
The review summarizes recent literatures dealing with hydrazinecarbothioamide group in thiocarbohydrazides and other derivatives including their physical and chemical properties along with their applications in the synthesis of heterocycles.
Publikováno v:
ChemInform. 40