Diastereoselective synthesis of trans-1,2-disubstituted cyclopropanols from homoallyl or bis-homoallyl esters via tandem intramolecular nucleophilic acyl substitution and intramolecular carbonyl addition reactions mediated by Ti(OPr-i)4 / 2 i-PrMgBr reagent
作者:Aleksandr Kasatkin、Fumie Sato
DOI:10.1016/0040-4039(95)01208-y
日期:1995.8
Reactions of homoallyl or bis-homoallyl esters with Ti(OPr-i)4/2 i-PrMgBr reagent resulted in intramolecular nucleophilic acyl substitution reaction and successive intramolecular carbonyladdition reaction providing trans-1,2-disubstituted cyclopropanols stereoselectively in excellent yields.
The present invention relates to a novel class of sulfonamides which are aspartyl protease inhibitors. In one embodiment, this invention relates to a novel class of HIV aspartyl protease inhibitors characterized by specific structural and physicochemical features. This invention also relates to pharmaceutical compositions comprising these compounds. The compounds and pharmaceutical compositions of this invention are particularly well suited for inhibiting HIV-1 and HIV-2 protease activity and consequently, may be advantageously used as anti-viral agents against the HIV-1 and HIV-2 viruses. This invention also relates to methods for inhibiting the activity of HIV aspartyl protease using the compounds of this invention and methods for screening compounds for anti-HIV activity.