Antiviral activities against herpes simplex virus type 1 by HPH derivatives and their structure–activity relationships
摘要:
The compound named Histidine-pyridine-histidine (HPH) is an oxygen-activating ligand derived from the structure of bleomycin. We synthesized HPH derivatives, namely HPH-1 to -8, and investigated their antiviral activities against herpes simplex virus type 1. HPH-8 showed potent antiviral activity with an EC50 of 15 mu M, and relatively high cytotoxicity with a CC50 of 37 mu m In contrast, HPH-4 indicated a weaker antiviral activity with an EC50 of 79 mu M, but exhibited a far more less cytotoxicity (CC50 500 mu m). Other HPH derivatives showed no effects against antiviral activities and cytotoxicities. (C) 2007 Elsevier Ltd. All rights reserved.
Antiviral activities against herpes simplex virus type 1 by HPH derivatives and their structure–activity relationships
摘要:
The compound named Histidine-pyridine-histidine (HPH) is an oxygen-activating ligand derived from the structure of bleomycin. We synthesized HPH derivatives, namely HPH-1 to -8, and investigated their antiviral activities against herpes simplex virus type 1. HPH-8 showed potent antiviral activity with an EC50 of 15 mu M, and relatively high cytotoxicity with a CC50 of 37 mu m In contrast, HPH-4 indicated a weaker antiviral activity with an EC50 of 79 mu M, but exhibited a far more less cytotoxicity (CC50 500 mu m). Other HPH derivatives showed no effects against antiviral activities and cytotoxicities. (C) 2007 Elsevier Ltd. All rights reserved.
“Choose-a-Size” Approach in Dynamic Combinatorial Chemistry: A Single Substrate Dynamic Combinatorial Library of Oligomacrocycles That Adapts to the Size and Shape of Carboxylates
A neutral anion binding receptor based on dipicolinic acid diamide was equipped with thiol groups in the amidic side arms. After the thiol was oxidized to disulfide groups with I-2, a mixture of cyclic oligomers (a library) was obtained. The distribution of macrocycles can be controlled kinetically during the oxidation process or thermodynamically at basic conditions via disulfide bond exchange. The library proved to be very sensitive to templation with various carboxylates in DMSO. The amplification pattern reflects the structural features of the anionic template and is sensitive to changes in the template's geometry. The application of carboxylates with multiple functional groups resulted in very strong amplification of the large penta- and hexameric macrocycles. The thermodynamic parameters of some templation effects were rationalized using a simple model and confirmed using competitive NMR titration.
Antiviral activities against herpes simplex virus type 1 by HPH derivatives and their structure–activity relationships
The compound named Histidine-pyridine-histidine (HPH) is an oxygen-activating ligand derived from the structure of bleomycin. We synthesized HPH derivatives, namely HPH-1 to -8, and investigated their antiviral activities against herpes simplex virus type 1. HPH-8 showed potent antiviral activity with an EC50 of 15 mu M, and relatively high cytotoxicity with a CC50 of 37 mu m In contrast, HPH-4 indicated a weaker antiviral activity with an EC50 of 79 mu M, but exhibited a far more less cytotoxicity (CC50 500 mu m). Other HPH derivatives showed no effects against antiviral activities and cytotoxicities. (C) 2007 Elsevier Ltd. All rights reserved.