Synthetic and Mechanistic Studies of the Aza-Retro-Claisen Rearrangement. A Facile Route to Medium Ring Nitrogen Heterocycles
作者:Robert K. Boeckman、Nathan E. Genung、Ke Chen、Todd R. Ryder
DOI:10.1021/ol100397q
日期:2010.4.2
medium-sized heterocyclicrings was achieved using a one-pot aza-Wittig/retro-aza-Claisen sequence of vinyl cyclobutanecarboxaldehydes derived from simple allylic carbonates. The use of various Staudinger reagents in the aza-Wittig reaction allows for a variety of N-substituted products to be obtained. The rearrangement is under thermodynamic control driven by relief of the cyclobutane ring strain and
Reaction of Cycloalkylphosphorane with Perfluoroalkylnitrile: A New Synthesis of Some Fluorine-Containing Cyclic 1,3-Diketones and Oxo Esters
作者:H. Trabelsi、A. Cambon
DOI:10.1055/s-1992-26099
日期:——
The preparation of some new perfluoroalkyl 1,3-dicarbonyl compounds is reported. The alcoholysis reaction of these 2-perfluoroalkanoylcycloalkanones in the presence or in the absence of base catalysis occurs, involving ring cleavage to yield fluorinated oxo esters.
This invention relates to treating an infection with a virus using protease inhibitors. Examples of the protease inhibitors include compounds of formula (II). Each variable is defined in the specification.
This invention relates to treating an infection with a virus using protease inhibitors. Examples of the protease inhibitors include compounds of formula (I). Each variable is defined in the specification.