Synthesis of Novel α-Substituted and α,α-Disubstituted Amino Acids by Rearrangement of Ammonium Ylides Generated from Metal Carbenoids
摘要:
[GRAPHICS]A new and general four-step synthesis of protected alpha-substituted and alpha,alpha-disubstituted amino acids has been developed. The key step involves intramolecular ammonium ylide generation from a copper carbenoid with concomitant [2,3] rearrangement. The aromatic template serves as a tether, protecting group, and activating group for peptide coupling. The ylide rearrangement products can be converted into protected cyclic amino acids by ring-closing metathesis.
The present invention relates to antimalarial compounds and their use against protozoa of the genus
Plasmodium
, including drug-resistant Plasmodia strains. This invention further relates to compositions containing such compounds and a process for making the compounds.
The present invention relates to antimalarial compounds and their use against protozoa of the genus
Plasmodium
, including drug-resistant Plasmodia strains. This invention further relates to compositions containing such compounds and a process for making the compounds.
Brønsted acid catalysed chemo- and <i>ortho</i>-selective aminomethylation of phenol
作者:Zhiqiong Tang、Dongdong Li、Yidi Yue、Dan Peng、Lu Liu
DOI:10.1039/d1ob00820j
日期:——
We have developed a Brønsted acidcatalysed highly ortho-selective functionalization of free phenols with readily available N,O-acetals under mild conditions, furnishing various corresponding aminomethylated phenol products in moderate to excellent yields. The salient features of this transformation include mild conditions, good substrate scope, excellent ortho-selectivity, high efficiency, and ease
[EN] HETEROARYL DERIVATIVES AND USES THEREOF<br/>[FR] DÉRIVÉS HÉTÉROARYLES ET LEURS UTILISATIONS
申请人:JACOBUS PHARMACEUTICAL COMPANY INC
公开号:WO2014074775A1
公开(公告)日:2014-05-15
The present invention relates to antimalarial compounds and their use against protozoa of the genus Plasmodium, including drug-resistant Plasmodia strains. This invention further relates to compositions containing such compounds and a process for making the compounds.
PPE copolymers, preparation thereof, and resin composition utilizing the same
申请人:INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
公开号:US20030225220A1
公开(公告)日:2003-12-04
PPE copolymers comprise three repeating units. The PPE copolymers are polymerized with 2,6-DMP, dialkenylamide or dialkenylamine phenol, and another phenol derivative. A resin composition having a low cross-linking temperature is also disclosed, which comprises the PPE copolymer and a free radical initiator.
PPE 共聚物包含三个重复单元。PPE 共聚物与 2,6-DMP、二烯基酰胺或二烯基胺酚以及另一种酚衍生物共聚。还公开了一种低交联温度的树脂组合物,其中包括 PPE 共聚物和自由基引发剂。