Heat-induced formation of .alpha.,.beta.-unsaturated nucleoside dialdehydes and their activity with adenosine deaminase
作者:Alan J. Grant、Leon M. Lerner
DOI:10.1021/jm00181a017
日期:1980.7
corresponding alpha,beta-unsaturated aldehydes. The reaction was first discovered during studies with adenosine deaminase and was initially investigated enzymatically until the nature of the chemical transformation was determined. A UV peak at 230-250 n, characteristic of the alpha,beta-unsaturated aldehyde group, was obtained by difference spectroscopy and affords a more practical means to study the reaction
Daunorubicin Derivatives Obtained from Daunorubicin and Nucleoside Dialdehydes
作者:Eugenia N. Olsufyeva、Nikolai A. Brusentsov、Nedyalka Todorova、Jan Balzarini、Erik De Clercq、Maria N. Preobrazhenskaya
DOI:10.1080/07328319708002524
日期:1997.1
Nucleoside dialdehydes were obtained by periodate oxidation of adenosine, cytidine, guanosine, uridine or 6-azauridine in the presence of Dowex (1x8; CH3COO-). Reductive alkylation of daunorubicin with these dialdehydes in the presence of NaBH3CN produced a series of 3'-deamino-3'-(4-morpholino)daunorubicin or 13-(R,S)-dihydrodaunorubicin derivatives, the latter being mixtures of two diastereomers at 13-C atom. The morpholino-daunorubicin derivatives containing nucleic base moieties are less cytotoxic than cyanomorpholino-daunorubicin, morpholino-daunorubicin and even than the parent antibiotic.
Stereoselective Synthesis of Some 3-Nitroglucopyranosyladenine Analogues via a Nitroolefin: Intermediate as Potential Therapeutic Agents
Three isomers of 9-(4,6-O-benzylidene-3-deoxy-beta-D-hexopyranosyl) adenines (2-4) were isolated. The manno isomer 2 could be isomerized to the gluco isomer 3. The manno (2) and galacto isomer (4) were deprotected to 5 and 7, respectively. Michael addition of some organic amines and thiolates to the nitroolefin intermediate (8) gave the corresponding 2-(substituted)-3-nitro-glucopyranosides (9a-h). Compounds 9a,c,h were deprotected to l0a,c,h. Sodium azide with 8 gave the triazolo nucleoside 11, which was deprotected to 12. 2-Deoxy-3-nitro analogue 14 was also obtained.
Adenosine dialdehyde analogs I: Regioselective synthesis of adenosine monoaldehydes
作者:John P. Neenan、Sumittada M. Opitz、Charles L. Cooke、Michael A. Ussery、Terence C. Morrill、Linda M. Eckel
DOI:10.1016/0960-894x(96)00234-x
日期:1996.6
Selective borohydride reduction of adenosine dialdehyde (1) gave the known adenosine 2'-monoaldehyde (2). Reaction of 1 with N,N'-diphenylethylenediamine, followed by reduction and deblocking gave adenosine 3'-monoaldehyde (5), a new compound. Unlike 2, compound 5 inhibited S-AdoHcy hydrolase and showed antiviral activity in vitro. Copyright (C) 1996 Elsevier Science Ltd