169170-97-2Relevant academic research and scientific papers
Synthesis of 1,3,4,5-Tetrahydropyrrolo-quinolines via the Vicarious Nucleophilic Substitution of Hydrogen
Makosza, Mieczyslaw,Stalewski, Jacek
, p. 7263 - 7276 (1995)
The VNS reaction was used as key steps in synthesis of O-methylnordehydrobufotenine and its 8-methoxy isomer starting from simple benzene derivatives.Attempts to use nitrobenzoxazole derivatives as a starting material were made.Several approaches were developed but all of them failed to produce the desired ring system on various stages of synthesis.
4,5-azolo-oxindoles
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, (2008/06/13)
Disclosed are novel 4,5-azolo-oxindoles having the formula These compounds inhibit cyclin-dependent kinases (CDKs), in particular CDK2. Thus, these compounds and their pharmaceutically acceptable salts, and prodrugs of said compounds, are anti-proliferative agents useful in the treatment or control of cell proliferative disorders, in particular cancer. Also disclosed are pharmaceutical compositions containing these compounds, and methods for the treatment and/or prevention of cancer, particularly in the treatment or control of solid tumors using these compounds, as well as intermediates useful in the preparation of compounds of formula I.
The vicarious nucleophilic substitution of hydrogen and related reactions in nitrobenzoxazoles
Makosza, Mieczyslaw,Stalewski, Jacek
, p. 7277 - 7286 (2007/10/02)
5- and 6-nitrobenzoxazoles 3 and 4 react with nucleophiles exclusively at C-2, giving ring opening products. If position 2- is blocked with phenyl substituent the reaction takes place in the carbocyclic ring affording the VNS products. 2-Methylthio-5-nitrobenzoxazole 7 and its 6-nitro isomer 8 give products which result from addition of a nucleophile to the carbocyclic ring (VNS) as well as to the heterocyclic ring (S(N)Ar and ring cleavage). 2-Methylthiobenzoxazoles can be readily converted to the corresponding benzoxazolones via oxidative hydrolysis.
