Synthesis of Substituted-Benzyl and Sugar-Modified Analogues of 6-<i>N</i>-(4-Nitrobenzyl)adenosine and Their Interactions with “<i>ES</i>” Nucleoside Transport Systems
作者:Morris J. Robins、Jun-ichi Asakura、Masakatsu Kaneko、Susumu Shibuya、Ewa S. Jakobs、Francisca R. Agbanyo、Carol E. Cass、Alan R. P. Paterson
DOI:10.1080/15257779408012177
日期:1994.7
Four classes of 6-X-benzylated purine nucleosides, (i) 6-N-(substituted-benzyl)adenosines, (ii) 6-N-(4-nitrobenzyl)adenine nucleosides with modified sugars, (iii) 6-N(S)-(4-azidobenzy1) derivatives of adenosine, 6-thioinosine, and 6-thioguanosine, and (iv) 6-N-4-N-[acyl(sulfonyl)amino]benzyl} adenosines, were synthesized and their binding interactions with ''es-NT'' (equilibrative, inhibitor-sensitive nucleoside transport) systems were studied. Several tight-binding analogues were found.
A novel and facile reaction to<i>N</i><sup>6</sup>-alkylated adenosine<i>via</i>benzotriazole as a synthetic auxiliary
作者:Hanan M. N. M. Afify、Erik B. Pedersen、Magdy A. Zahran
DOI:10.1002/jhet.5570370218
日期:2000.3
The reaction of benzotriazole with aliphatic, aromatic or heteroaromatic aldehyde and adenosine leads to a benzotriazole adduct which is reduced with sodium borohydride to the corresponding N6-alkylated adenosine derivatives. This procedure is also utilized in a new route to N6-(3-iodobenzyl)adenosine-5′-N-methyluronamide (IB-MECA) which is considered an important adenosine agonist at A3 adenosine