Stereoselective Functionalization of Racemic Cyclopropylzinc Reagents via Enantiodivergent Relay Coupling
作者:Lun An、Fei-Fei Tong、Shu Zhang、Xingang Zhang
DOI:10.1021/jacs.0c04462
日期:2020.7.8
cyclopropylzinc reagents. This strategy relies on a one-pot, two-step enantiodivergent relay coupling (EDRC) process of the racemic cis-cyclopropylzinc reagents with two different electrophiles, which involves kinetic resolution of racemic cis-cyclopropylzinc reagents through a nickel-catalyzed enantioselective coupling with alkyl electrophiles, followed by a stereospecific relay coupling of the remaining
The invention provides multivalent surface-crosslinked micelle (SCM) particles, crosslinked reverse micelle (CRM) particles, and methods of making and using them. The SCM particles can be used, for example, to inhibit a virus or bacteria from binding to a host cell. The inhibition can be used in therapy for the flu, cancer, or AIDS. The CRM particles can be used, for example, to prepare metal nanoparticles or metal alloy nanoparticles, or they can be used in catalytic reactions.
A clickable alkyne tagged chloroacetamidyl chitobiose derivative was synthesized as a potential inhibitor of cytoplasmic peptide‐N‐glycanase (PNGase). Construction of a chitobiose structure containing both alkyne and azide functional groups was performed using a thioglycoside donor having a triisopropylsilyl (TIPS) protected alkyne group and a glycosyl azide acceptor. The resultant chitobiosyl azide
Effects of chemical modification of sphingomyelin ammonium group on formation of liquid-ordered phase
作者:Sarah A. Goretta、Masanao Kinoshita、Shoko Mori、Hiroshi Tsuchikawa、Nobuaki Matsumori、Michio Murata
DOI:10.1016/j.bmc.2012.05.015
日期:2012.7
develop a versatile fluorescent lipid probe, chemical modifications to both the hydrophobic and hydrophilic portions of SM are essential. Few reports describing SM probes with a fluorophore at the polar head group have been published. This study examined the effect of substitution on an ammonium moiety of SM on the membrane properties of SM. Two SM analogs with small propargyl and allyl groups on the
Copper-Catalyzed Direct Propargylation of Polyfluoroarenes with Secondary Propargyl Phosphates
作者:Yan-Bo Yu、Zhi-Ji Luo、Xingang Zhang
DOI:10.1021/acs.orglett.6b01642
日期:2016.7.1
A copper-catalyzeddirectpropargylation of polyfluoroarenes with secondarypropargylphosphates has been developed. The reaction proceeds under mild reaction conditions with high efficiency and regioselectivity and provides a concise and straightforward method for the synthesis of polyfluoroarylated derivatives of interest in both life and materials science.