Broadening of the substrate tolerance of α-chymotrypsin by using the carbamoylmethyl ester as an acyl donor in kinetically controlled peptide synthesis
In the kinetically controlled approach of peptide synthesis mediated by α-chymotrypsin, the broadening of the protease’s substrate tolerance is achieved by switching the acyldonor from the conventional methyl ester to the carbamoylmethyl ester. Thus, as a typical example, the extremely low coupling efficiency obtained by employing the methyl ester of an inherently poor amino acid substrate, Ala, is
Kit for automated resolving agent selection and method thereof
申请人:Vaidya A. Niteen
公开号:US20070185346A1
公开(公告)日:2007-08-09
The present invention concerns an improved method and a tray or kit, which is useful to select quickly the optimum resolution agents, combinations and conditions to separate optical isomers. The tray of 24, 48, 96 or more samples is examined simultaneously visually or by standard analytical techniques.
KIT FOR AUTOMATED RESOLVING AGENT SELECTION AND METHOD THEREOF
申请人:Vaidya Niteen A.
公开号:US20120041225A1
公开(公告)日:2012-02-16
The present invention provides a means for the rapid selection of optimum resolving agents and solvents, combinations and conditions to separate optical isomers. The present invention combinedly describes and automates a full lifecycle of chiral separation method development and optimization through a series of kits and procedures providing screening, automation for screening, racemate recovery, enantiomer preparation, and method optimization.
[EN] KIT FOR AUTOMATED RESOLVING AGENT SELECTION AND METHOD THEREOF<br/>[FR] KIT POUR LA SELECTION AUTOMATISEE D'AGENTS DE RESOLUTION ET SON PROCEDE
申请人:VAIDYA NITEEN A
公开号:WO2007092264A2
公开(公告)日:2007-08-16
(EN) The present invention concerns an improved method and a tray or kit, which is useful to select quickly the optimum resolution agents, combinations and conditions to separate optical isomers. The tray of 12, 24, 48, 96 or more samples is examined simultaneously visually or by standard analytical techniques.(FR) La présente invention concerne un procédé amélioré et un plateau ou kit, qui est utile afin de sélectionner rapidement les agents de résolution, combinaisons et conditions optimums pour séparer des isomères optiques. Le plateau de 12, 24, 48, 96 ou plus échantillons est examiné simultanément visuellement ou par des techniques analytiques standard.