Iridium-catalyzed enantioselective hydroalkynylation via alkene isomerization
作者:Wen-Wen Zhang、Bi-Jie Li
DOI:10.1016/j.tetlet.2021.153108
日期:2021.6
An iridium-catalyzed enantioselective alkynylation of methylene CH bonds γ to the amide group is developed. The reaction proceeds through alkeneisomerization followed by regioselective hydroalkynylation. This method provides rapid access to a wide range of stereodefined alkynylated compounds in good yields and good enantioselectivities.
Conjugate addition reactions of .alpha.-silylated .alpha.,.beta.-unsaturated carboxylic acid salts
作者:Manning P. Cooke
DOI:10.1021/jo00235a016
日期:1987.12
Self-Protection: The Advantage of Radical Oligomeric Mixtures in Organic Synthesis
作者:Hui Yu、Chaozhong Li
DOI:10.1021/jo035461s
日期:2004.1.1
Atom-transfer radical oligomers of allyl iodoacetates were converted to 4-pentenoic acids upon treatment with zinc. Reactions of the radical oligomers of various omega-alkenyl iodoacetates with Grignard reagents afforded the corresponding substituted tetrahydrofuran derivatives. These results indicated that radical oligomeric mixtures not only serve as versatile intermediates in organic synthesis, but also exhibit unique advantages in that the oligomeric mixtures are self-protected and the deoligomerization functions as the simultaneous deprotection.
[EN] BIODEGRADABLE LIPIDS FOR THE DELIVERY OF ACTIVE AGENTS<br/>[FR] LIPIDES BIODÉGRADABLES POUR L'ADMINISTRATION D'AGENTS ACTIFS
申请人:ALNYLAM PHARMACEUTICALS INC
公开号:WO2013086354A1
公开(公告)日:2013-06-13
The present invention relates to a cationic lipid having one or more biodegradable groups located in a lipidic moiety (e.g., a hydrophobic chain) of the cationic lipid. These cationic lipids may be incorporated into a lipid particle for delivering an active agent, such as a nucleic acid. The invention also relates to lipid particles comprising a neutral lipid, a lipid capable of reducing aggregation, a cationic lipid of the present invention, and optionally, a sterol. The lipid particle may further include a therapeutic agent such as a nucleic acid.