Straightforward C-8 alkylation of adenosine analogues with tetraalkyltin reagents
作者:Petros Mamos、Arthur A. Van Aerschot、nancy J. Weyns、Piet A. Herdewijn
DOI:10.1016/s0040-4039(00)74226-2
日期:1992.4
A one step synthesis of the 8-methyl-, 8-ethyl -and 8-vinyl derivatives of adenosine, 2′-deoxyadenosine and 2′,3′-dideoxyadenosine starting from the readily available 8-bromo congeners is described. This reaction makes use of a transient silylation procedure and a Pd(0) catalysed cross-coupling with tetraorganotin reagents.
Synthesis and<sup>1</sup>H and<sup>13</sup>C NMR Spectral Characteristics of 8-Bromo-2′,3′-Dideoxyguanosine and 8-Bromo-2′,3′-Dideoxyinosine<sup>1</sup>
作者:Joanna Zeidler、Bożenna Golankiewicz
DOI:10.1080/07328319608002035
日期:1996.5
Reaction of 2',3'-dideoxyguanosine 1a as 5'-O-tert-butyldimethylsilyl derivative Ib and 2',3'-dideoxyinosine 2a with bromine in acetate buffer conducted in heterogeneous medium afforded 8-bromo-2',3'-dideoxyguanosine 3a (44% after deprotection) and 8-bromo-2',3'-dideoxyinosine 4a (12%) respectively. The change of conformational preferences anti --> syn on 8-bromo substitution of 2',3'-dideoxynucleosides is reflected in the H-1 and C-13 NMR spectra by characteristic shifts of H-2', H-3', C-2' and C-3' signals.
AERSCHOT, ARTHUR VAN;HERDEWIJN, PIET;BALZARINI, JAN;PAUWELS, RUDI;CLERCQ,+, J. MED. CHEM., 32,(1989) N, C. 1743-1749
作者:AERSCHOT, ARTHUR VAN、HERDEWIJN, PIET、BALZARINI, JAN、PAUWELS, RUDI、CLERCQ,+
DOI:——
日期:——
HERDEWIJN, P.;AERSCHOT, A. VAN;WIGERINCK, P.;KERREMANS, L., BULL. SOC. CHIM. BELG., 100,(1991) N, C. 183-184
作者:HERDEWIJN, P.、AERSCHOT, A. VAN、WIGERINCK, P.、KERREMANS, L.