We provide the ̄rst study of mutual fund management change that attempts to classify the reason for change. Our analysis of 307 manager changes separates promotions from demotions. In contrast to previous research that simply looks at changes, we ̄nd a richer set of variables that explain the probability of fund manager replacement. Indeed, our results suggest that a pooled regression that does ...

The trans-»eis photoisomerization of a series of substituted stilbazolium salts (A t X , At: trans-l-alkyl-4-[4-R-styryl]-pyridinium and -quinolinium, R = CN. H, CH3 and OCH3, X " = T and CIO4) was studied by laser flash photolysis and steady state irradiation measurements. The quantum yields of eis ^ trans photoisomerization (<£c_t and $ t _ c ) and of fluorescence of the trans isomers (f) ...

In this study, a variety of 3, 4-dihydropyrimidin-2(1H)-ones derivatives were synthesized via three-component Biginelli reaction. The quaternary ammonium- treated clay -catalyzed process proved to be simple, efficient, and environmentally friendly.

BACKGROUND Sixteen 3-styryl-2H-chromenes were subjected to quantitative structure-activity relationship analysis based on their cytotoxicity, tumor selectivity and anti-HIV activity, in order to find their new biological activities. MATERIALS AND METHODS Cytotoxicity against four human oral squamous cell carcinoma (OSCC) cell lines, three mesenchymal and two epithelial normal oral cells was d...

Mono-, di-, and trinuclear copper-azido moieties have been synthesized by varying the size of the countercations. [Bu4N]+ yielded a [Cu2(N3)6]2- copper-azido moiety in [Bu4N]2[Cu2(mu(1,1)-N3)2(N3)4], 1, and [Pr4N]+ yielded a [Cu3(N3)8]2- moiety in {[Pr4N]2[Cu3(mu(1,1)-N3)4(N3)4]}n, 2, in which symmetry-related [Cu3(N3)8]2- moieties are doubly mu(1,1)-azido bridged to form unprecedented infinite...

Cyclic imine sugars were prepared by a novel chemoenzymatic strategy in which azido-sugars, constructed by enzymatic aldol reactions, were hydrogenated under acidic conditions. These cyclic imine sugars were found to be potent inhibitors of glycoprocessing enzymes having Ki’s in the nanomolar and micromolar range for a variety of glycosidases. In comparison with their fully hydrogenated counter...