Solid-liquidPTC without added organic solvent promotes alkylation of purine derivatives leading in particular to an efficient synthesis of the antiviral DHPA. The location of the substituent on the ring was determined by analysis of coupling interactions through 2D δ-δ heteronuclear 1H 13C correlated NMR spectroscopy.
不添加有机溶剂的固液PTC促进嘌呤衍生物的烷基化,尤其导致抗病毒DHPA的有效合成。环上取代基的位置是通过2Dδ-δ杂核1 H 13 C相关NMR光谱分析耦合相互作用来确定的。
8-Bromo-9-alkyl adenine derivatives as tools for developing new adenosine A2A and A2B receptors ligands
作者:Catia Lambertucci、Ippolito Antonini、Michela Buccioni、Diego Dal Ben、Dhuldeo D. Kachare、Rosaria Volpini、Karl-Norbert Klotz、Gloria Cristalli
DOI:10.1016/j.bmc.2009.02.030
日期:2009.4
Importance of making available selective adenosine receptor antagonists is boosted by recent findings of adenosine involvement in many CNS dysfunctions. In the present work a series of 8-bromo-9-alkyl adenines are prepared and fully characterized in radioligand binding assays or functional cyclase experiments in respect to their interaction with all the four adenosine receptor subtypes. Results show that the presence of the bromine atom in 8-position of 9-substituted adenines promotes in general the interaction with the adenosine receptors, in particular at the A(2A) subtype. The present study also demonstrates that adenine derivatives could be a good starting point to obtain selective adenosine A(2B) receptor antagonists. (c) 2009 Elsevier Ltd. All rights reserved.
PLATZER, N.;GALONS, H.;BENSAID, Y.;MIOCQUE, M.;BRAM, G., BIO - ORG. HETEROCYSLES, 1986: SYNTH., MECH. AND BIOACTIV.: PROC. 4TH FEC+
作者:PLATZER, N.、GALONS, H.、BENSAID, Y.、MIOCQUE, M.、BRAM, G.