Simplified Chiral Aminolysis of Prochiral σ-Symmetric Dicarboxylic Anhydrides with Sodium Salt of 4(S)-IPTT

Highly enantioselective catalytic thiolysis of prochiral cyclic dicarboxylic anhydrides utilizing a bifunctional chiral sulfonamide.

Enantioselective [4+4] photodimerization of anthracene-2,6-dicarboxylic acid mediated by a C2-symmetric chiral template.

A chiral template was constructed from 7-ethynyl-1,5,7-trimethyl-3-azabicyclo[3.3.1]nonan-2-one by Sonogashira cross-coupling with 4,4''-diiodoterphenyl and was shown to bind the title compound strongly by hydrogen bonding resulting in enantioselectivities of up to 55% enantiomeric excess (ee) in the [4+4] anthracene photodimerization.

Enzymatic synthesis of chiral organophosphothioates from prochiral precursors.

The phosphotriesterase from Pseudomonas diminuta has been shown to selectively cleave the pro-R p-nitrophenolate substituent from bis-p-nitrophenyl alkyl phosphothioate esters. When the alkyl substituent is methyl, ethyl, or isopropyl the enantiomeric excess of the product is >/=99%. Manipulation of the active site through mutagenesis has enabled the preparation of protein variants that prefere...

evaluation of fat atrophy in patients with dermis fat graft of orbit by ct-scan

چکیده ندارد.

Property of σ(600) and Chiral Symmetry

The chiral symmetry and the notion of its dynamical breaking have been playing a central role in understanding the spectroscopy of hadrons with light-quarks. Presently the non-linear representation (Non-Linear σ Model(NLσM)) of chiral SU(2)L×SU(2)R group is widely accepted to be realized in nature on the basis of the success of low energy theorems concerning π mesons as Nambu-Goldstone bosons. ...