[EN] PENTAHETEROCYCLIC COMPOUND, PREPARATION METHOD THEREFOR AND USE THEREOF [FR] COMPOSÉ PENTAHÉTÉROCYCLIQUE, SON PROCÉDÉ DE PRÉPARATION ET SON UTILISATION [ZH] 五并杂环类化合物、其制备方法及其应用
Asymmetric Synthesis of Dialkyloxy-3-alkylammonium Cationic Lipids
作者:Christopher A. Hurley、John B. Wong、Helen C. Hailes、Alethea B. Tabor
DOI:10.1021/jo035422g
日期:2004.2.1
The cationic diether-linked cytofectin DOTMA (available commercially as a mixture, Lipofectin comprised of DOTMA:DOPE, 1:1) and analogues including DIMRIE and DORIE are frequently used for in vitro and in vivo transfections. Despite this wide usage direct synthetic routes to the optical isomers have received little attention to date. Here we describe strategies to synthesize enantiomers of DOTMA and analogues, including an extremely concise procedure to the trimethylammonium salts. One strategy utilized N-protection, as the imine, with concomitant ether formation and deprotection during the workup. Methylation of the 1-amino-2,3-dialkyloxypropane then generated the trimethylammonium cationic lipids directly. This methodology was extended to synthesize a novel headgroup functionalized lipid. A second route was also developed using an alternative chiral synthon.
[EN] STABLE CRYSTAL MODIFICATIONS OF DOTAP CHLORIDE<br/>[FR] MODIFICATIONS CRISTALLINES STABLES DE CHLORURE DE DOTAP
申请人:MERCK PATENT GMBH
公开号:WO2012159704A8
公开(公告)日:2013-09-12
[EN] AMINO LIPID BASED IMPROVED LIPID FORMULATION<br/>[FR] FORMULATION LIPIDIQUE AMÉLIORÉE À BASE D'AMINO LIPIDE
申请人:ALNYLAM PHARMACEUTICALS INC
公开号:WO2009132131A1
公开(公告)日:2009-10-29
The present invention provides compositions and methods for the delivery of therapeutic agents to cells. In particular, these include novel lipids and nucleic acid-lipid particles that provide efficient encapsulation of nucleic acids and efficient delivery of the encapsulated nucleic aicd to cells in vivo. The compositions of the present invention are highly potent, thereby allowing effective knock-down of specific target protein at relatively low doses. In addition, the compositions and methods of the present invention are less toxic and provide a greater therapeutic index compared to compositions and methods previously known in the art. Formulae (I), (II), (III), (IV).
[EN] PENTAHETEROCYCLIC COMPOUND, PREPARATION METHOD THEREFOR AND USE THEREOF<br/>[FR] COMPOSÉ PENTAHÉTÉROCYCLIQUE, SON PROCÉDÉ DE PRÉPARATION ET SON UTILISATION<br/>[ZH] 五并杂环类化合物、其制备方法及其应用