作者:Krishna C. Agrawal、Barbara A. Booth、Suzanne M. DeNuzzo、Alan C. Sartorelli
DOI:10.1021/jm00232a008
日期:1976.10
synthesized which contain a tertiary N at the 4 position. These materials were obtained by reacting 4-nitro-2-picoline N-oxide, either directly or after conversion to the corresponding 4-chloro derivative, with a variety of secondary amines. Rearrangement of the 4-substituted 2-picoline N-oxides with Ac2O yielded respective methyl acetates, which upon acid hydrolysis, MnO2 oxidation, and reaction with
AGRAWAL K. C.; SARTORELLI A. C., J. MED. CHEM. <JMCM-AR>, 1978, 21, NO 2, 218-221
作者:AGRAWAL K. C.、 SARTORELLI A. C.
DOI:——
日期:——
Selective Halogenation of Pyridines Using Designed Phosphine Reagents
作者:Jeffrey N. Levy、Juan V. Alegre-Requena、Renrong Liu、Robert S. Paton、Andrew McNally
DOI:10.1021/jacs.0c04674
日期:2020.6.24
metal complexes, but strategies to selectively halogenate pyridine C-H precursors are lacking. We designed a set of heterocyclic phosphines that are installed at the 4-position of pyridines as phosphonium salts and then displaced with halide nucleophiles. A broad range of unactivated pyridines can be halogenated, and the method is viable for late-stage halogenation of complex pharmaceuticals. Computational
Relationship between structure and antineoplastic activity of arylsulfonylhydrazones of 2-formylpyridine N-oxide
作者:Krishna C. Agrawal、Alan C. Sartorelli
DOI:10.1021/jm00200a015
日期:1978.2
variety of derivatives substituted at the aldehyde proton, the aryl ring, and the 4 position of the pyridine nucleus were synthesized. Antineoplastic activity was retained when nitro, amino, chloro, bromo, fluoro, and methoxy groups were introduced into either the meta or para positions of the phenyl ring of the parent compound. In addition, substitution of the terminal phenyl group by a pyridine ring