One-Pot Transformation of Ketoximes into Optically Active Alcohols and Amines by Sequential Action of Laccases and Ketoreductases or ω-Transaminases
作者:Raquel S. Correia Cordeiro、Nicolás Ríos-Lombardía、Francisco Morís、Robert Kourist、Javier González-Sabín
DOI:10.1002/cctc.201801900
日期:2019.2.20
An enzymatic one‐pot process for asymmetric transformation of prochiral ketoximes into alcohols or amines was developed by sequential coupling of a laccase‐catalyzed deoximation either with a ketone reduction (ketoreductase, KRED) or bioamination (ω‐transaminase, ω‐TA) in aqueous medium. An accurate selection of biocatalysts provided the corresponding products in excellent enantiomeric excesses and
Efficient Preparation of <i>N</i>-Phenylsulfenyl Ketimines from Oximes or Nitro Compounds without Racemization of α-Stereocenters
作者:Jordi Burés、Carles Isart、Jaume Vilarrasa
DOI:10.1021/ol702212n
日期:2007.10.1
(RR'C=N-SOAr), N-sulfonyl imines (RR'C=N-SO2Ar), and N-sulfonyl oxaziridines, the very mild procedure developed to convert ketoximes and secondary nitro derivatives to N-arenesulfenyl ketimines constitutes a new and efficient route to all these series of compounds. The configuration of the alpha-stereocenters is retained.
[EN] ASPARAGINE DERIVATIVES AND METHODS OF USING SAME<br/>[FR] DÉRIVÉS D'ASPARAGINE ET LEURS PROCÉDÉS D'UTILISATION
申请人:SENDA BIOSCIENCES INC
公开号:WO2021252640A1
公开(公告)日:2021-12-16
The present disclosure relates to compounds of formulas (A) and (I), pharmaceutically acceptable salts thereof, and solvates of any of the foregoing, pharmaceutical compositions comprising the same, methods of preparing the same, intermediate compounds useful for preparing the same, and methods for treating or prophylaxis of diseases, in particular cancer, such as colorectal cancer, using the same.
An activated carbon with OSGs (Oxygen Surface Groups) supported nickel catalyst shows high activity and chemoselectivity for hydrogenation of a variety of substituted nitroarenes under mild reaction conditions.
Action d'un tétrafluoroborate d'oxaziridinium sur les amines et les imines
作者:Gilles Hanquet、Xavier Lusinchi
DOI:10.1016/s0040-4020(01)89569-7
日期:1994.1
The Oxaziridinium salt 1 derived from dihydroisoquinolin is an oxygen transfer reagent to primary amines leading to nitrosoderivatives (if R= Alkyl) or nitrocompounds (if R= Aryl), to tertiaryamines leading to N-oxides, and to secondaryamines and imines leading to the corresponding nitrone.