Chemistry is traditionally divided into organic and inorganic chemistry. Formula: C7H9N, The former is the study of compounds containing at least one carbon-hydrogen bonds.In a patent£¬Which mentioned a new discovery about 108-47-4
BENZAZOLE COMPOUNDS AND PHARMACEUTICAL COMPOSITION COMPRISING THE SAME
The benzazole compounds of this invention can be represented by the following formula [I]: STR1 wherein R 1 is aryl or a heterocyclic group, each of which may have suitable substitutent(s),< P>
R 2 is hydroxy, mercapto, lower alkylthio, sulfo, lower alkyl, amino or substituted amino,
R 3 is hydrogen, halogen or lower alkoxy,
A is lower alkenylene, lower alkylene optionally substituted with hydroxy, or a group of the formula:
–A’–Q–A”–,
in which A’ is lower alkylene, A” is lower alkylene or a single bond, and Q is O or S, and
< P>X is O, S, NH or N–R 4, in which R 4 is lower alkyl,< P>
More particularly, it relates to benzazole compounds and pharmaceutically acceptable salts thereof which have antiulcer activity and H 2-receptor antagonism, to processes for the preparation thereof, to a pharmaceutical composition comprising the same and to a method for the treatment of ulcers in human being or animals. ”
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Reference£º
Chiral nitrogen ligands in late transition metal-catalysed asymmetric synthesis¡ªI. Addressing the problem of ligand lability in rhodium-catalysed hydrosilations,
Nitrogen-Containing Ligands for Asymmetric Homogeneous and Heterogeneous Catalysis