Disclosed herein relates to pharmaceutical engineering, and more particularly to a micro reaction system and a method for preparing 2-methyl-4-amino-5-cyanopyrimidine using the same. An acetamidine hydrochloride solution and an (dimethylaminomethylene)malononitrile solution are separately pumped into the micro reaction system including a micromixer and an agitating microchannel reactor in communication at the same time for a continuous condensation-cyclization reaction to obtain 2-methyl-4-amino-5-cyanopyrimidine.

Compounds useful for the inhibition of macrophage migration inhibitory factor (MIF) are provided herein, having the Formula I:

##STR00001##

wherein A is selected from the group consisting of aromatic or non-aromatic rings, bicyclic rings, polycyclic rings, alkenes or alkynes; B is H, OH, OR, SR, NH.sub.2, NHR, or alkyl; R is H or alkyl, and X and Y are independently N or CH, but one of X and Y must be N. Also provided are pharmaceutical compositions that contain a Formula I compound and methods for the treatment of MIF-implicated diseases or conditions that include administering a safe and effective amount of a Formula I compound.

Compounds useful for the inhibition of macrophage migration inhibitory factor (MIF) are provided herein, having the Formula I:

##STR00001##

wherein A is selected from the group consisting of aromatic or non-aromatic rings, bicyclic rings, polycyclic rings, alkenes or alkynes; B is H, OH, OR, SR, NH.sub.2, NHR, or alkyl; R is H or alkyl, and X and Y are independently N or CH, but one of X and Y must be N. Also provided are pharmaceutical compositions that contain a Formula I compound and methods for the treatment of MIF-implicated diseases or conditions that include administering a safe and effective amount of a Formula I compound.

Compounds are provided that are useful as immunomodulators. The compounds have the following Formula (II):

##STR00001##

including stereoisomers and pharmaceutically acceptable salts thereof, wherein R.sup.1, R.sup.2a, R.sup.2b, R.sup.2c, R.sup.3, R.sup.4, R.sup.5, R.sup.6a, R.sup.6b, m and n are as defined herein. Methods associated with preparation and use of such compounds, as well as pharmaceutical compositions comprising such compounds, are also disclosed.

This invention provides a process for preparing 1,4-diazaspiro[5.5]undecan-3-one and analogues thereof that are useful in the preparation of pharmaceutical compound, including for the treatment of disorders involving abnormal cellular proliferation. Chemical intermediates in the process are also provided.

The invention provides a compound of formula (I): formula (I) and the use of such compounds as cytidine triphosphate synthase 1 inhibitors, particularly in the treatment or prophylaxis of disorders associated with cell proliferation.

##STR00001##

The present invention relates to a compound of formula (I) for use in organic electronic devices, a composition comprising a compound of formula (IV) and at least one compound of formula (IVa) to (IVd), an organic semiconductor layer comprising the compound or composition, an organic electronic device comprising the organic semiconductor layer, and a display device comprising the organic electronic device.

##STR00001##

The present invention relates to a compound of formula (I) for use in organic electronic devices, a composition comprising a compound of formula (IV) and at least one compound of formula (IVa) to (IVd), an organic semiconductor layer comprising the compound or composition, an organic electronic device comprising the organic semiconductor layer, and a display device comprising the organic electronic device.

##STR00001##

The present application relates to an aptamer nucleic acid molecule, a complex containing the aptamer nucleic acid molecules, a method of detecting intracellular or extracellular RNA, DNA or other target molecules, and a kit containing the aptamer. The aptamer of the present application is capable of specifically binding a kind of fluorophore micromolecules, and can significantly enhance fluorescence intensity under excitation light of appropriate wavelength.

The present application relates to an aptamer nucleic acid molecule, a complex containing the aptamer nucleic acid molecules, a method of detecting intracellular or extracellular RNA, DNA or other target molecules, and a kit containing the aptamer. The aptamer of the present application is capable of specifically binding a kind of fluorophore micromolecules, and can significantly enhance fluorescence intensity under excitation light of appropriate wavelength.