Disclosed are compounds of formula (I) below and pharmaceutically acceptable salts thereof: (I), in which each of variables R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, A.sub.1, A.sub.2, A.sub.3, A.sub.4, X and Y is defined herein. Also disclosed are methods for reducing the glycemic level and treating glucagon-associated disorders with a compound of formula (I) or a salt thereof and a pharmaceutical composition containing same.

##STR00001##

Provided are, inter alia, compounds having a structure of Formula (X), or a pharmaceutically acceptable salt thereof composition including the same and methods of use. Ring A, L.sup.1, L.sup.2, W, R.sup.2A, R.sup.2B, and R.sup.10 are as described herein.

##STR00001##

Provided is an organic electroluminescent element having high efficiency, a long lifetime, and bending resistance. An organic electroluminescent element includes a light emitting layer and an electron transport layer adjacent to the light emitting layer between a positive electrode and a negative electrode. A host compound of the light emitting layer has an ionization potential deeper than that of a light emitting dopant of the light emitting layer by 0.3 eV or more. At least one organic compound contained in the electron transport layer has a molecular dipole moment of 6.0 debye or more.

Provided is an organic electroluminescent element having high efficiency, a long lifetime, and bending resistance. An organic electroluminescent element includes a light emitting layer and an electron transport layer adjacent to the light emitting layer between a positive electrode and a negative electrode. A host compound of the light emitting layer has an ionization potential deeper than that of a light emitting dopant of the light emitting layer by 0.3 eV or more. At least one organic compound contained in the electron transport layer has a molecular dipole moment of 6.0 debye or more.

New classes of thiadiazole and oxadiazole compounds for use in LC mixtures are disclosed. In an embodiment, the new classes of thiadiazoles and oxadiazoles comprise at least one phenyl ring attached to the heterocyclic ring, where no alkyl, alkenyl or alkynyl tails are attached to the phenyl ring, but one alkyl, alkenyl or alkynyl tail is attached to the other end of the molecule, and a fluoro or cyano group appears in the para position of the phenyl ring. These compounds are disclosed as being effective at inducing smectic A phases in liquid crystal mixtures, particularly in liquid crystal mixtures also possessing a smectic C phase, more particularly in materials possessing a chiral smectic C (ferroelectric) phase.

New classes of thiadiazole and oxadiazole compounds for use in LC mixtures are disclosed. In an embodiment, the new classes of thiadiazoles and oxadiazoles comprise at least one phenyl ring attached to the heterocyclic ring, where no alkyl, alkenyl or alkynyl tails are attached to the phenyl ring, but one alkyl, alkenyl or alkynyl tail is attached to the other end of the molecule, and a fluoro or cyano group appears in the para position of the phenyl ring. These compounds are disclosed as being effective at inducing smectic A phases in liquid crystal mixtures, particularly in liquid crystal mixtures also possessing a smectic C phase, more particularly in materials possessing a chiral smectic C (ferroelectric) phase.

The present invention relates to novel trifluoromethyl oxadiazoles of the formula I, or an N-oxide, and/or their agriculturally useful salts; to their use for controlling phytopathogenic fungi; to a method for combating phytopathogenic harmful fungi, which process comprises treating the fungi or the plants, the soil or seeds to be protected against fungal attack, with an effective amount of at least one compound of the formula I, or an N-oxide, or an agriculturally acceptable salt thereof; to agrochemical compositions comprising at least one such compound; and to agrochemical compositions further comprising seeds.

##STR00001##

The present invention relates to novel trifluoromethyl oxadiazoles of the formula I, or an N-oxide, and/or their agriculturally useful salts; to their use for controlling phytopathogenic fungi; to a method for combating phytopathogenic harmful fungi, which process comprises treating the fungi or the plants, the soil or seeds to be protected against fungal attack, with an effective amount of at least one compound of the formula I, or an N-oxide, or an agriculturally acceptable salt thereof; to agrochemical compositions comprising at least one such compound; and to agrochemical compositions further comprising seeds.

##STR00001##

The invention describes compounds that inhibit both HDAC and GSK3? (i.e., HDAC/GSK3? dual inhibitors). The invention further describes compositions containing these HDAC/GSK3? dual inhibitors, as well as methods and kits using these HDAC/GSK3? dual inhibitors to treat various medical conditions. The invention also provides methods and kits using a HDAC inhibitor and a GSK3? to treat various medical conditions, and compositions containing a HDAC inhibitor and a GSK3?. Medical conditions treatable with various embodiments of the invention include but are not limited to cancers and tumors.

The invention describes compounds that inhibit both HDAC and GSK3? (i.e., HDAC/GSK3? dual inhibitors). The invention further describes compositions containing these HDAC/GSK3? dual inhibitors, as well as methods and kits using these HDAC/GSK3? dual inhibitors to treat various medical conditions. The invention also provides methods and kits using a HDAC inhibitor and a GSK3? to treat various medical conditions, and compositions containing a HDAC inhibitor and a GSK3?. Medical conditions treatable with various embodiments of the invention include but are not limited to cancers and tumors.