Novel Synthesis of Benzothiazole Derivatives via Directed Lithiation and Aryne-Mediated Cyclization Followed by Quenching with Electrophiles
摘要:
A series of benzothiazole derivatives selectively functionalized at position 7 was synthesized in the course of the following one-pot reaction sequence: directed lithiation of 2,2-dimethyl-N-(3-halophenyl)propanethioamides (1, 2) or N-(3-halophenyl)-tert-butylthionocarbamates (15-17), cyclization of the aryne intermediate, and quenching of the resulting aryllithium with selected electrophiles.
Compounds are provided that are modulators of the C5a receptor. The compounds are substituted dihydropyridines and are useful in pharmaceutical compositions, methods for the treatment of diseases and disorders involving the pathologic activtation of C5a receptors.
Compounds having activity as PKM2 activators are disclosed. The compounds have the following structure (I): including stereoisomers, tautomers, pharmaceutically acceptable salts and prodrugs thereof, wherein R1, R2, R3, R4, R5 and R6 are as defined herein. Methods associated with preparation and use of such compounds, as well as pharmaceutical compositions comprising such compounds, are also disclosed.
Compounds having activity as PKM2 activators are disclosed. The compounds have the following structure (I):
including stereoisomers, tautomers, pharmaceutically acceptable salts and prodrugs thereof, wherein R1, R2, R3, R4, R5 and R6 are as defined herein. Methods associated with preparation and use of such compounds, as well as pharmaceutical compositions comprising such compounds, are also disclosed.