Aminoalkohole, 1. Mitt.: Ein Verfahren zur Synthese enantiomerenreiner 1,2-Aminoalkohole miterythro-Konfiguration
摘要:
The synthesis of both enantiomers of norephedrine and norisoephedrine is described to present a method for the preparation of enantiomerically pure branched 1,2-aminoalcohols. In a one pot reaction enantiomerically pure cyanohydrins bearing an acetal protective group are subjected to Grignard-reaction followed by addition of lithium aluminum hydride. After deprotection the target compounds are obtained.
Disclosed herein are substituted indole cysteinyl leukotriene receptor modulators of Formula I, process of preparation thereof, pharmaceutical compositions thereof, and methods of use thereof.
A stabilized preparation which comprises: a unstable drug in a polyethylene glycol-containing preparation; and a coating agent comprising a copolyvidone instead of polyethylene glycol with which the drug is coated.
Polymeric depots for localization of agent to biological sites
申请人:TRUSTEES OF BOSTON UNIVERSITY
公开号:US10251841B2
公开(公告)日:2019-04-09
Provided herein are polymeric particles and compounds and processes that can be used to prepare polymer-based particles and methods of using those particles to localize or concentrate a subsequently delivered agent to an in vivo site.
Described herein are compounds and processes that can be used to prepare polymer-based films, particles, gels and related compositions, and processes for delivery of agents, and other uses.
Diselenide-Mediated Catalytic Functionalization of Hydrophosphoryl Compounds
作者:Handoko、Zacharia Benslimane、Paramjit S. Arora
DOI:10.1021/acs.orglett.0c01858
日期:2020.8.7
We report a diaryldiselenide catalyst for cross-dehydrogenative nucleophilic functionalization of hydrophosphoryl compounds. The proposed organocatalytic cycle closely resembles the mechanism of the Atherton–Todd reaction, with the catalyst serving as a recyclable analogue of the halogenating agent employed in the named reaction. Phosphorus and selenium NMR studies reveal the existence of a P–Se bond