The present invention relates to compositions comprising analogues of purine nucleosides containing a ring-expanded (“fat”) heterocyclic ring, in place of purine, and an unmodified or modified sugar residue, pharmaceutically acceptable derivatives of such compositions, as well as methods of use thereof. In particular, these compositions may be utilized in the treatment of certain cancers, bacterial, fungal, parasitic, and viral infections, including, but not limited to, Acquired Immunodeficiency Syndrome (AIDS), hepatitis, Epstein-Barr and cytomegalovirus.
Irreversible, Tight-Binding Inhibition of Adenosine Deaminase by Coformycins: Inhibitor Structural Features That Contribute to the Mode of Enzyme Inhibition
作者:Mikyung Hong、Ramachandra S. Hosmane
DOI:10.1080/07328319708006131
日期:1997.7
Coformycin analogues 1-6 were synthesized and biochemically screened against adenosine deaminase in order to assess the relative contributions of N-4, N-6, and the N-3 sugar moiety to the mane of enzyme inhibition. Our results indicate that N-4 plays a relatively greater role than N-6 in enzyme tight-binding, and that a benzyl group can substitute for the sugar moiety at N-3. The absence of a sugar or benzyl group at N-3, however, leads to lass of activity. The hydroxyl group at C-8, while crucial for activity, does not alone confer the tight-binding characteristics to coformycins.
RING-EXPANDED NUCLEOSIDES AND NUCLEOTIDES
申请人:Burns, Barry
公开号:EP0724587A1
公开(公告)日:1996-08-07
EP0724587A4
申请人:——
公开号:EP0724587A4
公开(公告)日:1996-12-27
SYNTHESIS AND MANUFACTURE OF PENTOSTATIN AND ITS PRECURSORS, ANALOGS AND DERIVATIVES