The present disclosure is generally directed to antiviral compounds, and more specifically directed to combinations of compounds which can inhibit the function of the NS5A protein encoded by Hepatitis C virus (HCV), compositions comprising such combinations, and methods for inhibiting the function of the NS5A protein.
[EN] PROCESS FOR PREPARING PLATINUM ORGANOSILOXANE COMPLEXES USING AN ENONE ADDITIVE<br/>[FR] PROCÉDÉ DE PRÉPARATION DE COMPLEXES DE PLATINE-ORGANOSILOXANE À L'AIDE D'UN ADDITIF D'ÉNONE
申请人:DOW SILICONES CORP
公开号:WO2019018461A1
公开(公告)日:2019-01-24
A platinum organosiloxane complex is prepared by a process including combining A) a platinous halide; B) a ketone; C) an enone additive distinct from any other starting materials or rearrangement products thereof; and D) a polyorganosiloxane having, per molecule, 2 to 4 silicon bonded terminally unsaturated hydrocarbon groups having from 2 to 6 carbon. The platinum organosiloxane complex prepared by the process is useful as a hydrosilylation catalyst.
Tandem Nucleophilic Addition/Oxy-2-azonia-Cope Rearrangement for the Formation of Homoallylic Amides and Lactams: Total Synthesis and Structural Verification of Motuporamine G
作者:Lijun Zhou、Zhiming Li、Yue Zou、Quanrui Wang、Italo A. Sanhueza、Franziska Schoenebeck、Andreas Goeke
DOI:10.1021/ja310002m
日期:2012.12.12
oxy-2-azonia-Cope rearrangements give homoallylic amides. In the case of 2-vinylcycloalkanones, the process results in ring enlargement, providing a novel route to 9- to 16-membered lactams. The preparative significance of this protocol was evidenced by a short synthesis of macrocyclic alkaloid motuporamine G. The stereochemistry-defining step of this oxy-azonia-Cope rearrangement was further studied
A general method to synthesize functionalized allyl α-amino acid derivatives through an irreversible oxy-2-azonia-Cope rearrangement is reported. In the presence of AlCl3, the reaction of imino ethyl glyoxalates with various β,γ-unsaturated ketones furnished the corresponding allyl α-amino acid derivatives. The key to the success of this method is the amide bond formation, which makes the rearrangement
[EN] ODORANT SECONDARY ALCOHOLS AND THEIR COMPOSITIONS<br/>[FR] ALCOOLS SECONDAIRES ODORANTS ET LEURS COMPOSITIONS
申请人:S H KELKAR & COMPANY LTD
公开号:WO2019228903A1
公开(公告)日:2019-12-05
The present invention relates to new classes of odorous alcohols (odorants) derived from 2,3- dimethylbutene which are useful as fragrance or flavor materials in particular in providing natural piney olfactory notes with a complex profile to perfume, aroma or deodorizing/masking compositions.