The invention relates to a novel ionizable cationic lipid family incorporating silicon, which belongs to the trademark LipexSil™ 1st generation lipids wherein at least one of the two side chains contains silyl acetal linker. Lipids containing silyl acetal linker(s) so far are unprecedented in the art and are effective as ionizable cationic lipids in the formulation of empty or loaded lipid nanoparticles (LNPs). The novel linkers according to the invention are designed by means of borane catalysts [WO 2022/129966]. The invention describes the synthesis of the lipids of formula (I), formation and characterization of nanoparticles and biological experiments demonstrating that the lipid nanoparticles prepared with these novel lipids can efficiently deliver their cargo (e.g. RNA, DNA, mRNA, siRNA, pDNA, circular DNA, small biologically active molecules) into the cells.
[EN] NOVEL ORGANOPOLYSILOXANE, SURFACE TREATMENT AGENT COMPRISING THE SAME, RESIN COMPOSITION COMPRISING THE SAME, AND GELATINOUS PRODUCT OR CURED PRODUCT THEREOF [FR] NOUVEL ORGANOPOLYSILOXANE, AGENT DE TRAITEMENT DE SURFACE LE COMPORTANT, COMPOSITION DE RÉSINE LE COMPORTANT ET SON PRODUIT GÉLATINEUX OU SON PRODUIT DURCI
obtaining a variety of functionalized double‐deckersilsesquioxanes with high yields based on the Pt catalysts were developed. These parallel routes concern reverse Si−H and −CH=CH2 reactive groups placement in the double‐deckersilsesquioxane core. As a result, a series of new tetrasubstituted double‐deckersilsesquioxanes derivatives were obtained with high yield and selectivity and comprehensively characterized
reported. On the basis of a study of platinum- and rhodium complexes in the reactions between TMDSO and selected olefins containing C=C bond, it was possible to choose the most efficient catalyst whose application in the solvent-free system led to selective mono-functionalization of the disiloxane reagent and simultaneous formation of only β-regioisomeric products, bearing in their structure functional
An efficient method for synthesizing monofunctionalized derivatives of 1,1,3,3-tetramethyldisiloxane in ionic liquids as recoverable solvents for rhodium catalyst
Functionalized siloxanes, as one of the most important classes of organosilicon compounds, are widely applied in industry. In our studies, we have investigated, the reaction between 1,1,3,3-tetramethyldisiloxane (TMDSO) and 1-octene, using the rhodium catalyst immobilized in six phosphonium-based ionic liquids differing in the structure of cation and anion. Studies have shown high potential for using
White-Light initiated Mn2(CO)10/HFIP-Catalyzed anti-Markovnikov hydrosilylation of alkenes
作者:Irina K. Goncharova、Stepan A. Filatov、Anton P. Drozdov、Andrei A. Tereshchenko、Pavel A. Knyazev、Alexander A. Guda、Irina P. Beletskaya、Ashot V. Arzumanyan
DOI:10.1016/j.jcat.2023.115269
日期:2024.1
quantitative and with -Markovnikov selectivity. The method is applicable to terminal alkenes, including those with O-, N- and halogen-containing functional groups, styrene and allylbenzene derivatives, etc., as well as to a wide range of alkyl-, phenyl-, siloxy- and alkoxy-containing tertiary hydrosilanes. These conditions turned out to be most efficient for hydrosilylation of gaseous reagents such as ethylene