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.
Synthesis, Characterization and Biological Activity of New b-Lactam Analogues Bearing Pyrimidine and N-Acetamido Moieties
作者:Suror Abdulrahman Mahdi
DOI:10.14233/ajchem.2017.20338
日期:——
In this work, a series of new b-lactams were synthesized by Staudinger ketene-imine cyclo-addition reaction after multisteps synthesis. The first step involved preparation of N-acetamido amino acids (3-5) via reaction of acetic anhydride with amino acids (alanine, glycine, valine), since acetyl group is common protecting group for amine in organic synthesis. Treatment of compounds 3-5 with thionyl chloride in the second step gave N-acetamido amino acid chlorides (ketenes) (6-8) which in turn were treated with Schiff bases (imines) compounds 1 and 2, which derived from 2-amino pyrimidine and cinnamaldehyde or crotonaldehyde. In the third step to afford a series of the b-lactams (9-11) and (12-14). The synthesized compounds were identified by FT-IR and some of them by 1H NMR and 13C NMR. The synthesized b-lactams were screened for their antimicrobial activity against E. coli, Pseudomonas aeruginosa (Gram-negative), Staphylococcus aureus (Gram-positive) bacteria respectively and antifungal activity against Candida albicans.