Investigating<i>Saccharomyces cerevisiae</i>alkene reductase OYE 3 by substrate profiling, X-ray crystallography and computational methods
作者:Robert W. Powell, III、M. Pilar Buteler、Sunidhi Lenka、Michele Crotti、Sara Santangelo、Matthew J. Burg、Steven Bruner、Elisabetta Brenna、Adrian E. Roitberg、Jon D. Stewart
DOI:10.1039/c8cy00440d
日期:——
X-ray crystalstructures of unliganded and phenol-bound OYE 3 were solved to 1.8 and 1.9 Åresolution, respectively. Both structures were nearly identical to that of OYE 1, with only a single amino acid difference in the active site region (Ser 296 versus Phe 296, part of loop 6). Despite their essentially identical static X-ray structures, molecular dynamics (MD) simulations revealed that loop 6 conformations
Catalytic asymmetric hydroxymethylation of silicon enolates has been achieved. In this reaction, an aqueous solution of formaldehyde can be used to realize an easy and safe procedure, and high enantioselectivities have been obtained. This is the first example of catalytic asymmetric reactions in aqueous media with a chiral scandium complex.
Oligonucleotides containing a ribo-configured cyclohexanyl nucleoside: probing the role of sugar conformation in base pairing selectivity
作者:Concetta Paolella、Daniele D'Alonzo、Guy Schepers、Arthur Van Aerschot、Giovanni Di Fabio、Giovanni Palumbo、Piet Herdewijn、Annalisa Guaragna
DOI:10.1039/c5ob01449b
日期:——
duplexes did not enhance their stability, while a very high pairing selectivity for RNA was found. As deduced by comparative analysis of Tm and NMR data, a relationship between pairing selectivity and conformational preferences of the “sugar” moiety of r-CNA (and more generally of six-membered nucleic acids) was suggested.
Chitosan Aerogel Beads as a Heterogeneous Organocatalyst for the Asymmetric Aldol Reaction in the Presence of Water: An Assessment of the Effect of Additives
The catalytic properties of chitosan aerogel for the direct asymmetric aldol reaction in water assisted by various surfactants and acid co-catalysts have been evaluated by employing a range of donor and acceptor systems. A beneficial effect on both the yields and nantioselectivities was observed, and the combination of surfactants and acid co-catalysts has proven particularly useful in the case of
[EN] PROSTAGLANDIN ANALOGS<br/>[FR] ANALOGUES DE PROSTAGLANDINE
申请人:ALLERGAN INC
公开号:WO2006014206A1
公开(公告)日:2006-02-09
Compounds comprising formula (I) or a pharmaceutically acceptable salt or a prodrug thereof is disclosed herein. A, X, J, and E are as described herein. These compounds are useful for treating diseases.