[formula: see text] Asymmetric aldol additions using chlorotitanium enolates of thiazolidinethione propionates proceed with high diastereoselectivity for the "Evans" or "non-Evans" syn product depending on the nature and amount of the base used. With (-)-sparteine as the base, selectivities of 97:3 to > 99:1 were obtained for the Evans syn products with 2 equivalents of base and for the non-Eva...

An impaired generation of nitric oxide has been associated with diabetic renal disease. In order to elucidate the underlying molecular mechanisms into how nitric oxide synthesis is impaired in diabetic renal disease, we examined changes in activities and expressions of some renal enzymes involved in nitric oxide production during the development of diabetic nephropathy in type II diabetic Otsuk...

The activation energy to reaction is a key quantity that controls catalytic activity. Having used ab inito calculations to determine an extensive and broad ranging set of activation energies and enthalpy changes for surface-catalyzed reactions, we show that linear relationships exist between dissociation activation energies and enthalpy changes. Known in the literature as empirical Brønsted-Eva...

Aggregate supply is an old idea. Although discussed by Keynes and the early Keynsians, most recent econometric models can justly be criticized for not adequately developing the supply side. It is therefore exciting to review a supply-side model created by one of the most prominent model-builders. The Evans model was commissioned by the Senate Finance Committee as an attempt to incorporate suppl...

We explore the relationship between the Evans function, transmission coefficient and Fredholm determinant for systems of first-order linear differential operators on the real line. The applications we have in mind include linear stability problems associated with travelling wave solutions to nonlinear partial differential equations, for example reaction-diffusion or solitary wave equations. The...

I was pleased to read Berber et al’s 50 year-old patient with Evans syndrome which was published as a Letter to The Editor in the recent issue of the Journal of Turgut Ozal Medical Center (2013;20(3):289-290). But, it was surprised to me that mega dose methyl prednisolone (MDMP) treatment was not brought to attention which had been successfully used for these patients first time from our countr...

Key words (–)-stemoamide - Stemona alkaloids Evans aldol reaction cross metathesis Riley oxidation Staudinger

New records of genera and species of spider wasps (Hymenoptera: Pompilidae) from Colombia are provided. Agenioideus, Cryptocheilus, Evagetes, Mystacagenia, and Xerochares are newly recorded genera from Colombia. Nineteen species are first recorded from Colombia: Aimatocarevitrea (Fox); Ageniellaazteca (Cameron); Ageniellacurtipinus (Cameron); Ageniellafallax (Arlé); Ageniellahirsuta Banks; Agen...