phase-transitioned BSA (PTB) film using the mild and fast fabrication process adhered to the capillary inner wall uniformly, and the fabricated PTB film-coated capillarycolumn was applied to realize open tubular capillary electrochromatography (OT-CEC) enantioseparation. The enantioseparation ability of PTB film-coated capillary was evaluated with eight pairs of chiral analytes including drugs and neurotransmitters
Synthesis of Aromatic 1,2-Amino Alcohols Utilizing a Bienzymatic Dynamic Kinetic Asymmetric Transformation
作者:Johannes Steinreiber、Martin Schürmann、Friso van Assema、Michael Wolberg、Kateryna Fesko、Christoph Reisinger、Daniel Mink、Herfried Griengl
DOI:10.1002/adsc.200700051
日期:2007.6.4
The applicability of the recent published bienzymatic protocol for the synthesis of (R)-2-amino-1-phenylethanol was tested using L-threonine aldolase from Pseudomonas putida and l-tyrosine decarboxylase from either Enterococcus faecalis (Efa) or two genes from Enterococcus faecium (Efi1, Efi2). In all 21 benzaldehyde derivatives were applied for an initial TLC screening. On a small scale, octopamine
adrenergic/dopamine D2 receptorligands, a structure-guided approach for the evolution of GPCR agonists that address multiple targets was elaborated. Starting from GPCR crystal structures, we describe the design, synthesis and biological investigation of a defined set of compounds leading to the identification of the benzoxazinone (R)-3, which shows agonist properties at the adrenergic β2 receptor and substantial
Optical activity in Tb(III) mixed-ligand complexes containing pyridine-2,6-dicarboxylic acid and hydroxyphenyl derivatives
作者:Fanshi Yan、Robert Copeland、Harry G. Brittain
DOI:10.1016/s0020-1693(00)81721-1
日期:1983.1
Abstract Addition of hydroxyphenyl derivatives to tris(dipicolinate)Tb(III) results in the generation of optical activity within the Tb(III) spectroscopic transitions. Unlike earlier work, in many cases the bonding was found not to be totally outer-sphere in nature, but the adducts could be best described as 1:1 Tb(DPA) 3− 3 /substrate complexes. At low pH values the interactions appeared to be outer-sphere
This invention provides compounds of Formula I having the structure
1
wherein,
R
1
, R
2
, R
3
, R
4
, R
5
, T, T
1
, T
2
, and X are as defined hereinbefore, or a pharmaceutically acceptable salt thereof, which are useful in treating or inhibiting metabolic disorders related to insulin resistance or hyperglycemia (typically associated with obesity or glucose intolerance), atherosclerosis, gastrointestinal disorders, neurogenetic inflammation, glaucoma, ocular hypertension and frequent urination; and are particularly useful in the treatment or inhibition of type II diabetes.