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.
Gold-Catalyzed Synthesis of Oxygen- and Nitrogen-Containing Heterocycles from Alkynyl Ethers: Application to the Total Synthesis of Andrachcinidine
作者:Hyung Hoon Jung、Paul E. Floreancig
DOI:10.1021/jo071225w
日期:2007.9.1
containing pendent oxygen or nitrogennucleophiles react with electrophilic gold catalysts in the presence of water to form saturated heterocyclic ketones. Mechanistic studies demonstrated that the reactions proceed through a sequence of alkyne hydration, alkoxy group elimination, and intramolecularconjugateaddition. Diastereoselectivities for tetrahydropyran and piperidine formation are very good to
The anodic oxidation of aliphatic saturated ethers carried out in a mixed solvent of methanol and acetic acid gave α-methoxylated ethers in much better yields than those obtained by using only methanol as a solvent.
The reaction of various ethers with alkenes bearing an electron-withdrawing substituent in the presence of N-hydroxyphthalimide combined with Co(OAc)2 underdioxygen produced the corresponding adducts in which oxygen is incorporated to alkenes in good yields. Oxcetane, furan and pyrane smoothly added to ethyl fumarate even at room temperature to give coupling products in high yields. An acyclic ether
The decomposition of O,O-tert-butyl and O-isopropenyl peroxycarbonate in cyclanones and oxacylanes leads to acetonylated derivatives of these solvents. Although the reaction mechanism involves in both cases the addition of free radicals derived from solvent to the double bond of the peroxycarbonate, the orientation of the whole process depends on the solvent. In the case of oxacyclanes the relative