Provided herein are compounds that modulate EGFR and methods of using the same, for example to treat cancer.

Inhibition of quorum sensing in Gram-negative bacteria, particularly strains of Vibrio, by certain compounds is disclosed. Compositions to treat bacterial infections and methods to treat such infections are also provided.

Inhibition of quorum sensing in Gram-negative bacteria, particularly strains of Vibrio, by certain compounds is disclosed. Compositions to treat bacterial infections and methods to treat such infections are also provided.

A heteroaryl-thio-substituted pyrone compound that is a heteroaryl-thio-substituted pyrone or a heteroaryl-thio-substituted coumarin. In various embodiments, the heteroaryl-thio-substituted pyrone compound or a reaction product thereof is a metal corrosion inhibitor.

A heteroaryl-thio-substituted pyrone compound that is a heteroaryl-thio-substituted pyrone or a heteroaryl-thio-substituted coumarin. In various embodiments, the heteroaryl-thio-substituted pyrone compound or a reaction product thereof is a metal corrosion inhibitor.

A compound represented by Formula (I), or a salt or N-oxide compound thereof is provided.

##STR00001##

In Formula (I), A.sup.1 to A.sup.4 each independently represents a carbon atom or nitrogen atom, X.sup.1 represents a C1-6 alkyl group or the like, n represents the number of X.sup.1 groups, R.sup.1 represents a C1-6 alkylthio group or the like, and D is a group represented by Formula (D-1) or (D-2), and

##STR00002##

in Formula (D-1) and (D-2), * represents a binding position, Q represents a C1-6 alkyl group or the like, B.sup.1 and B.sup.2 each independently represents a nitrogen atom or the like, R.sup.2 represents a C1-6 alkyl group or the like that is bound to one of the nitrogen atoms in Formula (D-1), B.sup.3 and B.sup.4 each independently represents a nitrogen atom or carbon atom, R.sup.4 represents a C1-6 alkyl group or the like, and m represents the number of R.sup.4 groups.

A compound represented by Formula (I), or a salt or N-oxide compound thereof is provided.

##STR00001##

In Formula (I), A.sup.1 to A.sup.4 each independently represents a carbon atom or nitrogen atom, X.sup.1 represents a C1-6 alkyl group or the like, n represents the number of X.sup.1 groups, R.sup.1 represents a C1-6 alkylthio group or the like, and D is a group represented by Formula (D-1) or (D-2), and

##STR00002##

in Formula (D-1) and (D-2), * represents a binding position, Q represents a C1-6 alkyl group or the like, B.sup.1 and B.sup.2 each independently represents a nitrogen atom or the like, R.sup.2 represents a C1-6 alkyl group or the like that is bound to one of the nitrogen atoms in Formula (D-1), B.sup.3 and B.sup.4 each independently represents a nitrogen atom or carbon atom, R.sup.4 represents a C1-6 alkyl group or the like, and m represents the number of R.sup.4 groups.

A compound represented by Formula (I), or a salt or N-oxide compound thereof is provided. ##STR00001## In Formula (I), A.sup.1 to A.sup.4 each independently represents a carbon atom or nitrogen atom, X.sup.1 represents a C1-6 alkyl group or the like, n represents the number of X.sup.1 groups, R.sup.1 represents a C1-6 alkylthio group or the like, and D is a group represented by Formula (D-1) or (D-2), and ##STR00002## in Formula (D-1) and (D-2), * represents a binding position, Q represents a C1-6 alkyl group or the like, B.sup.1 and B.sup.2 each independently represents a nitrogen atom or the like, R.sup.2 represents a C1-6 alkyl group or the like that is bound to one of the nitrogen atoms in Formula (D-1), B.sup.3 and B.sup.4 each independently represents a nitrogen atom or carbon atom, R.sup.4 represents a C1-6 alkyl group or the like, and m represents the number of R.sup.4 groups.

A compound represented by Formula (I), or a salt or N-oxide compound thereof is provided. ##STR00001## In Formula (I), A.sup.1 to A.sup.4 each independently represents a carbon atom or nitrogen atom, X.sup.1 represents a C1-6 alkyl group or the like, n represents the number of X.sup.1 groups, R.sup.1 represents a C1-6 alkylthio group or the like, and D is a group represented by Formula (D-1) or (D-2), and ##STR00002## in Formula (D-1) and (D-2), * represents a binding position, Q represents a C1-6 alkyl group or the like, B.sup.1 and B.sup.2 each independently represents a nitrogen atom or the like, R.sup.2 represents a C1-6 alkyl group or the like that is bound to one of the nitrogen atoms in Formula (D-1), B.sup.3 and B.sup.4 each independently represents a nitrogen atom or carbon atom, R.sup.4 represents a C1-6 alkyl group or the like, and m represents the number of R.sup.4 groups.

The present disclosure describes novel compounds that are somatostatin receptor type 4 agonists.