An expedient synthesis of N6-substituted-5′-modified adenosines
摘要:
Herein we report a short and efficient synthesis of N-6-substituted 5'-modified adenosines, which was achieved in four steps from 2',3,5'-tris-O-(tert-butyldimethylsilyl)inosine. (c) 2006 Elsevier Ltd. All rights reserved.
N6-substituted C5′-modified adenosines as A1 adenosine receptor agonists
作者:T.D. Ashton、Stephen P. Baker、Sally A. Hutchinson、Peter J. Scammells
DOI:10.1016/j.bmc.2007.11.010
日期:2008.2.15
Adenosines bearing 5'-modification in conjunction with an N-6-substituent have previously been shown to act as partial agonists at the A(1) adenosine receptor. Our current work investigates the effect of modifying the 5'-position in conjunction with efficacious bicyclic and tricyclic N-6-substituents. Several highly potent agonists for the A(1) adenosine receptor were identified; however, all of these compounds behaved as full agonists. In keeping with previous reports, 5'-halogen and 5'-sulfide derivatives of N-6-(endo-norborn-2-yl) adenosine were, in general, low nanomolar agonists of the A(1) adenosine receptor. The known partial agonist, N-6-cyclopentyl-5'-deoxy-5'-ethylthioadenosine (2), also behaved as a full agonist in our assay. (C) 2007 Elsevier Ltd. All rights reserved.