A new N-heterocyclic carbene (NHC)-catalyzed strategy for the regioselective monoesterification of isosorbide (IS) at either endo (5-OH) or exo (2-OH) position is described. Site-selective acylation proceeds under oxidative conditions in presence a quinone oxidant using aldehydes as mild acylating agents. Experimental evidences suggest role stereoelectronic features acyl azolium salt intermedia...

INTRODUCTION Based upon the findings of the African-American Heart Failure Trial, the US Food and Drug Administration approved the fixed-dose combination of isosorbide dinitrate (ISDN) and hydralazine hydrochloride (HYD) (FDC-ISDN/HYD) as a new drug for treatment of heart failure (HF) in self-identified African Americans. According to the FDA, FDC-ISDN/HYD has no therapeutic equivalent. However...

The rate of rebleeding of esophageal varices remains high after cessation of acute esophageal variceal hemorrhage. Many measures have been developed to prevent the occurrence of rebleeding. When considering their effectiveness in reduction of rebleeding, the associated complications cannot be neglected. Due to unavoidable high incidence of complications, shunt surgery and endoscopic injection s...

PURPOSE To evaluate the effect of sublingual isosorbide-5 mononitrate (ISMN) and nitroglycerin (NTG) on luminal diameter of epicardial coronary arteries, mean arterial pressure and deleterious effects. METHODS Fifty patients were submitted to cardiac catheterization and coronary arteriography, at baseline, and 5 min after sublingual administration of ISMN, group A (GA) or NTG, group B (GB). ...