Furopyridines.<b>XXIII</b>. Synthesis and reactions of chloropyridine derivatives of furo[2,3-<i>b</i>]-, -[2,3-<i>c</i>]- and -[3,2-c]pyridine
作者:Shunsaku Shiotani、Katsunori Taniguchi
DOI:10.1002/jhet.5570340333
日期:1997.5
Chlorination of the N-oxides of furo[2,3-b]- 1a, -[2,3-c]- 1b and -[3,2-c]pyridine 1c with phosphorus oxychloride afforded compounds substituted normally at the α- or λ-position to the ring nitrogen, 2a, 2′a, 2b, 2c, 2′c and 2′c, and in addition, in the case of 1b, compounds substituted on the furan ring, 2′b and 2″b. The structures of these compounds were confirmed from their ir, nmr and mass spectra
Compounds of Formula 1, as shown below and defined herein:
pharmaceutically acceptable salts thereof, synthesis, intermediates, formulations, and methods of disease treatment therewith, including treatment of cancers, such as tumors driven at least in part by TAK1 or for which an appropriate TAK1 inhibitor is effective. This Abstract is not limiting of the invention.