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The importance of the 4'-hydroxyl hydrogen for the anti-trypanosomal and antiviral properties of (+)-5'-noraristeromycin and two 7-deaza analogues. 1998

K L Seley, and S W Schneller, and E De Clercq, and D Rattendi, and S Lane, and C J Bacchi, and B Korba
Department of Chemistry, Auburn University, AL 36849-5312, USA.

(+)-5'-Noraristeromycin (1) has shown significant antiviral activity while its 7-deaza analogue 2 is an antitrypanosomal candidate. To determine the relevance of the 4'-hydroxyl hydrogen in these activities, a derivative of 1 (that is, 3) where the C-4' hydroxyl hydrogen has been replaced by a methyl group has been prepared beginning with palladium (0) mediated coupling of the sodium salt of N6-benzoyladenine (9) and (1S,4R)-4-methoxy-2-cyclopenten-1-yl acetate (5). The synthesis of compound 5 is described from (1S,4R)-1-[(tert-butyldimethylsilyl)oxy]-4-hydroxycyclopent-2-ene (6) in three steps. Analogous preparations of the 7-deaza and 8-aza-7-deaza derivatives of 3 related to 2 (that is, 4 and 12) are also reported. The new derivatives (3, 4, and 12) failed to show improved antiviral activity. Compound 12 was the only derivative with some anti-trypanosomal activity, giving 40% inhibition of growth at 100 microM against bloodstream forms of a Typanosoma brucei brucei isolate in a standard in vitro screen. This study indicated that the C-4'-hydroxyl hydrogen plays a role in the medicinal properties of 1 and 2.

UI MeSH Term Description Entries
D011720 Pyrazoles Azoles of two nitrogens at the 1,2 positions, next to each other, in contrast with IMIDAZOLES in which they are at the 1,3 positions.
D011725 Pyridines Compounds with a six membered aromatic ring containing NITROGEN. The saturated version is PIPERIDINES.
D002461 Cell Line, Transformed Eukaryotic cell line obtained in a quiescent or stationary phase which undergoes conversion to a state of unregulated growth in culture, resembling an in vitro tumor. It occurs spontaneously or through interaction with viruses, oncogenes, radiation, or drugs/chemicals. Transformed Cell Line,Cell Lines, Transformed,Transformed Cell Lines
D006515 Hepatitis B virus The type species of the genus ORTHOHEPADNAVIRUS which causes human HEPATITIS B and is also apparently a causal agent in human HEPATOCELLULAR CARCINOMA. The Dane particle is an intact hepatitis virion, named after its discoverer. Non-infectious spherical and tubular particles are also seen in the serum. Dane Particle,Hepatitis Virus, Homologous Serum,B virus, Hepatitis,Hepatitis B viruses,Particle, Dane,viruses, Hepatitis B
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000241 Adenosine A nucleoside that is composed of ADENINE and D-RIBOSE. Adenosine or adenosine derivatives play many important biological roles in addition to being components of DNA and RNA. Adenosine itself is a neurotransmitter. Adenocard,Adenoscan
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D000998 Antiviral Agents Agents used in the prophylaxis or therapy of VIRUS DISEASES. Some of the ways they may act include preventing viral replication by inhibiting viral DNA polymerase; binding to specific cell-surface receptors and inhibiting viral penetration or uncoating; inhibiting viral protein synthesis; or blocking late stages of virus assembly. Antiviral,Antiviral Agent,Antiviral Drug,Antivirals,Antiviral Drugs,Agent, Antiviral,Agents, Antiviral,Drug, Antiviral,Drugs, Antiviral
D013329 Structure-Activity Relationship The relationship between the chemical structure of a compound and its biological or pharmacological activity. Compounds are often classed together because they have structural characteristics in common including shape, size, stereochemical arrangement, and distribution of functional groups. Relationship, Structure-Activity,Relationships, Structure-Activity,Structure Activity Relationship,Structure-Activity Relationships
D014344 Trypanocidal Agents Agents destructive to the protozoal organisms belonging to the suborder TRYPANOSOMATINA. Trypanocidal Drugs,Trypanocides,Trypanosomicidal Agents,Trypanosomicides,Agents, Trypanocidal,Agents, Trypanosomicidal,Drugs, Trypanocidal

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