An object of the present invention is to provide a novel compound useful for manufacturing salacinol, a method for manufacturing the compound, a method for manufacturing salacinol, methods for protecting and deprotecting a diol group, and a protective agent for a diol group. A compound represented by Formula (1) is a compound useful for manufacturing salacinol.

##STR00001##

(In the formula, each of R.sup.1a and R.sup.1b is a hydrogen atom or a hydroxy protective group; R.sup.2 is a hydroxy group or the like; and R.sup.3 is a hydroxy group or the like.)

An object of the present invention is to provide a novel compound useful for manufacturing salacinol, a method for manufacturing the compound, a method for manufacturing salacinol, methods for protecting and deprotecting a diol group, and a protective agent for a diol group. A compound represented by Formula (1) is a compound useful for manufacturing salacinol.

##STR00001##

(In the formula, each of R.sup.1a and R.sup.1b is a hydrogen atom or a hydroxy protective group; R.sup.2 is a hydroxy group or the like; and R.sup.3 is a hydroxy group or the like.)

The present invention relates to compounds of Formula (I), or an agronomically acceptable salt of said compounds wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are as defined herein. The invention further relates to herbicidal compositions which comprise a compound of Formula (I) and to the use of compounds of Formula (I) for controlling weeds, in particular in crops of useful plants.

##STR00001##

The present invention provides compounds and methods for modulation of the quorum sensing of bacteria. In an embodiment, the compounds of the present invention are able to act as replacements for naturally occurring bacterial quorum sensing ligands in a ligand-protein binding system; that is, they imitate the effect of natural ligands and produce an agonistic effect. In another embodiment, the compounds of the present invention are able to act in a manner which disturbs or inhibits the naturally occurring ligand-protein binding system in quorum sensing bacteria; that is, they produce an antagonistic effect. The compounds of the present invention comprise N-acylated-homoserine lactones (AHLs) comprised of a wide range of acyl groups.

The present invention provides compounds and methods for modulation of the quorum sensing of bacteria. In an embodiment, the compounds of the present invention are able to act as replacements for naturally occurring bacterial quorum sensing ligands in a ligand-protein binding system; that is, they imitate the effect of natural ligands and produce an agonistic effect. In another embodiment, the compounds of the present invention are able to act in a manner which disturbs or inhibits the naturally occurring ligand-protein binding system in quorum sensing bacteria; that is, they produce an antagonistic effect. The compounds of the present invention comprise N-acylated-homoserine lactones (AHLs) comprised of a wide range of acyl groups.

The present invention relates to analogues of N-acyl homoserine lactones (AHLs) and pharmaceutical compositions comprising same. The invention also relates to their use in the treatment of inflammatory diseases of the epithelium.

The present invention relates to analogues of N-acyl homoserine lactones (AHLs) and pharmaceutical compositions comprising same. The invention also relates to their use in the treatment of inflammatory diseases of the epithelium.

Novel p62 ligand compounds, or a stereoisomer, a solvate, a hydrate, or a prodrug thereof are disclosed. The novel compounds, stereoisomer, solvate, hydrate, or prodrug activates selective autophagy in cells to selectively remove proteins, organelles, and coagulations in the body, and thus can be advantageously used as a pharmaceutical composition for preventing, ameliorating, or treating various proteinopathies. Compositions such as pharmaceutical composition or food compositions containing the novel p62 ligand compounds, stereoisomer, solvate, hydrate, or prodrug thereof as well as uses thereof are disclosed.

Novel p62 ligand compounds, or a stereoisomer, a solvate, a hydrate, or a prodrug thereof are disclosed. The novel compounds, stereoisomer, solvate, hydrate, or prodrug activates selective autophagy in cells to selectively remove proteins, organelles, and coagulations in the body, and thus can be advantageously used as a pharmaceutical composition for preventing, ameliorating, or treating various proteinopathies. Compositions such as pharmaceutical composition or food compositions containing the novel p62 ligand compounds, stereoisomer, solvate, hydrate, or prodrug thereof as well as uses thereof are disclosed.

Compounds having a structure of formula (I), (I-A), (Ia)-(Ie), (A)-(E), and (II) or a pharmaceutically acceptable salt, tautomer or stereoisomer thereof are provided. Uses of such compounds for modulating androgen receptor activity, imaging diagnostics in cancer and therapeutics, and methods for treatment of disorders including prostate cancer are also provided.