driven C–H ketoalkylation of glycine derivatives and peptides with cycloalkyl hydroperoxides is presented. This protocol provides a straightforward route to unnatural amino acids bearing a distal carbonyl group with moderate to good yields. Preliminary mechanistic studies revealed that both a SET event and radical chain propagation were involved in this transformation.
[EN] COMPOUNDS AND METHODS FOR THE TREATMENT OF PARASITIC INFECTIONS<br/>[FR] COMPOSÉS ET MÉTHODES DE TRAITEMENT D'INFECTIONS PARASITAIRES
申请人:UNIV ILLINOIS
公开号:WO2020247758A1
公开(公告)日:2020-12-10
Cryptosporidium parvum is a highly prevalent zoonotic and anthroponotic protozoan parasite that causes a diarrheal syndrome in children and neonatal livestock, culminating in growth retardation and mortalities. Disclosed herein are inhibitors against the enzymatic activity of recombinant CpLDH protein that were identified. The inhibitors were tested for anti-Cryptosporidium effect using in vitro infection assays of HCT-8 cells monolayers. Compounds NSC158011 and NSC10447 were identified to inhibit the proliferation of intracellular C. parvum in vitro, with IC50 values of 14.88 and 72.65 μM, respectively. At doses tolerable in mice, both NSC158011 and NSC10447 significantly reduced the shedding of C. parvum oocysts in infected immunocompromised mice's feces and prevented intestinal villous atrophy as well as mucosal erosion due to C. parvum. These findings have unveiled anti-Cryptosporidium drug candidates that can be explored further for the development of therapeutic agents against C. parvum infections.