Abstract: The present invention relates to a novel route of synthesis for the opioid receptor antagonist Buprenorphine or a pharmaceutically acceptable salt thereof, starting from thebaine, wherein the route comprises the reaction of thebaine with a dienophile; forming an alkylated reaction product by reaction with a Grignard-reagent; formation of an cyanamide; deprotection of the cyanamide- and the phenolic-oxygen-moiety, wherein the cleavage of one or both groups is performed in the presence of an alkali or alkaline earth sulfide; followed by derivatization with a cyclopropyl-halogen and hydrogenation to yield Buprenorphine.

Abstract: The present invention relates to a novel route of synthesis for the opioid receptor antagonist Buprenorphine or a pharmaceutically acceptable salt thereof, starting from thebaine, wherein the route comprises the reaction of thebaine with a dienophile; forming an alkylated reaction product by reaction with a Grignard-reagent; formation of an cyanamide; deprotection of the cyanamide- and the phenolic-oxygen-moiety, wherein the cleavage of one or both groups is performed in the presence of an alkali or alkaline earth sulfide; followed by derivatization with a cyclopropyl-halogen and hydrogenation to yield Buprenorphine.

Abstract: The present invention is directed to a process for the preparation of opioid compounds such as buprenorphine, naltrexone, naloxone, nalbuphone, nalbuphine, and the like.

Abstract: The present invention is directed to a process for the preparation of opioid compounds such as buprenorphine, naltrexone, naloxone, nalbuphone, nalbuphine, and the like.

Abstract: Thiazolopyridin-2-yloxy-phenyl and thiazolopyrazin-2-yloxy-phenyl amine compounds are described, which are useful as LTA4 hydrolase (LTA4H) modulators. Such compounds may be used in pharmaceutical compositions and methods for modulation of LTA4H and for the treatment of disease states, disorders, and conditions mediated by LTA4 hydrolase activity.

Abstract: Thiazolopyridin-2-yloxy-phenyl and thiazolopyrazin-2-yloxy-phenyl amine compounds are described, which are useful as LTA4 hydrolase (LTA4H) modulators. Such compounds may be used in pharmaceutical compositions and methods for modulation of LTA4H and for the treatment of disease states, disorders, and conditions mediated by LTA4 hydrolase activity.

Abstract: Thiazolopyridin-2-yloxy-phenyl and thiazolopyrazin-2-yloxy-phenyl amine compounds are described, which are useful as LTA4 hydrolase (LTA4H) modulators. Such compounds may be used in pharmaceutical compositions and methods for modulation of LTA4H and for the treatment of disease states, disorders, and conditions mediated by LTA4 hydrolase activity.

Abstract: Thiazolopyridin-2-yloxy-phenyl and thiazolopyrazin-2-yloxy-phenyl amine compounds are described, which are useful as LTA4 hydrolase (LTA4H) modulators. Such compounds may be used in pharmaceutical compositions and methods for modulation of LTA4H and for the treatment of disease states, disorders, and conditions mediated by LTA4 hydrolase activity.

Abstract: Sodium fosphenytoin, 5,5-diphenyl-3-[(phosphonooxy)methyl]imidazolidine-2,4-dione disodium salt, a known anticonvulsive, antiepileptic and antiarrhythmic, can be prepared by reacting 3-hydroxymethyl-5,5-diphenylimidazoline-2,4-dione with a phosphorous acid diester or triester activated by an oxidizing agent, whose ester groups can be selectively cleaved from the reaction product, cleaving the ester groups from the resulting phosphoric acid diester 2,5-dioxo-4,4-diphenyl-imidazolidin-1-ylmethyl ester and converting the resulting 5,5-diphenyl-3-[(phosphonooxy)methyl]imidazolidine-2,4-dione to its disodium salt. The oxidizing agent is advantageously a halogenating agent such as elemental bromine or N-bromosuccinimide, and the phosphorous acid ester used is advantageously dibenzyl phosphite.

Abstract: The present invention relates to a process for the preparation of (3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yl (1S,2R)-3-[[(4-aminophenyl)sulfonyl](isobutyl) amino]-1-benzyl-2-hydroxypropylcarbamate as well as intermediates for use in said process. More in particular the invention relates to processes for the preparation of (3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yl (1S,2R)-3-[[(4-aminophenyl) sulfonyl](isobutyl)amino]-1-benzyl-2-hydroxypropylcarbamate which make use of 4-amino-N-((2R,3S)-3-amino-2-hydroxy-4-phenylbutyl)-N-(isobutyl)benzene sulfonamide intermediate, and to processes amenable to industrial scaling up. (3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yl (1S,2R)-3-[[(4-aminophenyl)sulfonyl](isobutyl) amino]-1-benzyl-2-hydroxypropylcarbamate is particularly useful as HIV protease inhibitors.