Abstract: The use of CCR5 antagonists of the formula or a pharmaceutically acceptable salt thereof, wherein R is optionally substituted phenyl, pyridyl, thiophenyl or naphthyl; R1 is hydrogen or alkyl; R2 is substituted phenyl, substituted heteroaryl, naphthyl, fluorenyl, diphenylmethyl or optionally substituted phenyl- or heteroaryl-alkyl; R3 is hydrogen, alkyl, alkoxyalkyl, cycloalkyl, cycloalkylalkyl, or optionally substituted phenyl, phenylalkyl, naphthyl, naphthylalkyl, heteroaryl or heteroarylalkyl; R4, R5 and R7 are hydrogen or alkyl; R6 is hydrogen, alkyl or alkenyl; for the treatment of HIV, solid organ transplant rejection, graft v.

Abstract: Disclosed are a process and a device for the detection, identification, and quantification of chemical compounds or biomolecules using Response Normalized Liquid Chromatography NanoSpray Ionization Mass Spectrometry (RNLC-NSI-MS).

Abstract: In its many embodiments, the present invention provides a novel class of compounds of structural formula I as inhibitors of the CCR5 receptors, methods of preparing such compounds, pharmaceutical compositions containing one or more such compounds, methods of preparing pharmaceutical formulations comprising one or more such compounds, and methods of treatment, prevention, inhibition, or amelioration of one or more diseases associated with CCR5 using such compounds or pharmaceutical compositions. The invention also relates to the use of a combination of a compound of this invention and one or more antiviral or other agents useful in the treatment of Human Immunodeficiency Virus (HIV). The invention further relates to the use of a compound of this invention, alone or in combination with another agent, in the treatment of solid organ transplant rejection, graft v. host disease, arthritis, rheumatoid arthritis, inflammatory bowel disease, atopic dermatitis, psoriasis, asthma, allergies or multiple sclerosis.

Abstract: The use of CCR5 antagonists of the formula or a pharmaceutically acceptable salt thereof, wherein R is optionally substituted phenyl, pyridyl, thiophenyl or naphthyl; R1 is hydrogen or alkyl; R2 is substituted phenyl, substituted heteroaryl, naphthyl, fluorenyl, diphenylmethyl or optionally substituted phenyl- or heteroaryl-alkyl; R3 is hydrogen, alkyl, alkoxyalkyl, cycloalkyl, cycloalkylalkyl, or optionally substituted phenyl, phenylalkyl, naphthyl, naphthylalkyl, heteroaryl or heteroarylalkyl; R4, R5 and R7 are hydrogen or alkyl; R6 is hydrogen, alkyl or alkenyl; for the treatment of HIV, solid organ transplant rejection, graft v.

Abstract: A system and method for performing hydrogen/deuterium (H/D) exchange in an electrospray ionization (ESI) source is described. The system includes a liquid chromatograph-mass spectrometer (LC-MS), which is equipped with an ESI source that provides for introduction of a sheath liquid. The resulting system employs deuterated solvent, such as deuterium oxide, as the sheath liquid, which allows H/D exchange experiments to be performed on-line. This directly provides information for determining the number and position of exchangeable hydrogens, aiding in the elucidation of the structures of drug metabolites.