J. Žemlička

Publications216
h-index28
Citations2,904
Highly Influential Citations41
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In Vitro Activity and Mechanism of Action of Methylenecyclopropane Analogs of Nucleosides against Herpesvirus Replication
ABSTRACT We have reported previously that methylenecyclopropane analogs of nucleosides have excellent activity against certain members of the herpesvirus family. A second generation, the… Expand
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Oral Activity of a Methylenecyclopropane Analog, Cyclopropavir, in Animal Models for Cytomegalovirus Infections
ABSTRACT We reported previously that purine 2-(hydroxymethyl)methylenecyclopropane analogs have good activity against cytomegalovirus infection. A second-generation analog,… Expand
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Substrate specificity of ribosomal peptidyl transferase: 2'(3')-O-aminoacyl nucleosides as acceptors of the peptide chain on the amino acid site.
Abstract Synthetic substrates were used to investigate the specificity of the acceptor site of ribosomal peptidyl transferase. The results may be summarized as follows: 1. (i) Simple synthetic… Expand
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Substrate Specificity of Ribosomal Peptidyl Transferase
The effect of the nature of the amino acid residue on the acceptor activity of substrates of ribosomal peptidyl transferase was investigated. We tested 2′(3′)-O-aminoacyladenosines containing the… Expand
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(Z)- and (E)-2-((hydroxymethyl)cyclopropylidene)methyladenine and -guanine. New nucleoside analogues with a broad-spectrum antiviral activity.
New nucleoside analogues 14-17 based on a methylenecyclopropane structure were synthesized and evaluated for antiviral activity. Reaction of 2,3-dibromopropene (19) with adenine (18) led to… Expand
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Substrate specificity of ribosomal peptidyl transferase. The effect of the nature of the amino acid side chain on the acceptor activity of 2'(3')-O-aminoacyladenosines.
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Synthesis and antiviral activity of (Z)- and (E)-2,2-[bis(hydroxymethyl)cyclopropylidene]methylpurines and -pyrimidines: second-generation methylenecyclopropane analogues of nucleosides.
The second generation of methylenecyclopropane analogues of nucleosides 5a-5i and 6a-6i was synthesized and evaluated for antiviral activity. The 2,2-bis(hydroxymethyl)methylenecyclopropane (11) was… Expand
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In Vitro Induction of Human Immunodeficiency Virus Type 1 Variants Resistant to Phosphoralaninate Prodrugs of Z-Methylenecyclopropane Nucleoside Analogues
ABSTRACT Two methylenecyclopropane nucleoside analogues with a phenylphosphoralaninate moiety, QYL-685 and QYL-609, exert potent and specific activities against human immunodeficiency virus type 1… Expand
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Stereoselective Phosphorylation of Cyclopropavir by pUL97 and Competitive Inhibition by Maribavir
ABSTRACT Human cytomegalovirus (HCMV) is a widespread pathogen that can cause severe disease in immunologically immature and immunocompromised individuals. Cyclopropavir (CPV) is a guanine nucleoside… Expand
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(Z)- and (E)-2-(1,2-dihydroxyethyl)methylenecyclopropane analogues of 2'-deoxyadenosine and 2'-deoxyguanosine. Synthesis of all stereoisomers, absolute configuration, and antiviral activity.
Chiral Z- and E-stereoisomers of (1,2-dihydroxyethyl)methylenecyclopropane analogues of 2'-deoxyadenosine and 2'-deoxyguanosine were synthesized, and their antiviral activity was investigated.… Expand
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