Carbocyclic nucleosides from enantiomeric, α-pinane-based aminodiols
摘要:
Starting from (1R,25,3S.5R)- and (15,2R,3R,5S)-6,6-dimethylspiro[bicyclo[3 1.1]heptane-2.2'-oxiran]-3-ol (-)-8 and (+)-8, two comparative syntheses were developed for pinane-based chiral carbocyclic nucleosides The regioselective ring opening of the spiro-oxirane ring of (-)-8 and (+)-8 with NaN(3) resulted in azidodiols (-)-9 and (+)-9. Catalytic reduction of (-)-9 and (+)-9 furnished chiral aminodiols (-)-10 and (+)-10, which were transformed by linear synthesis to purine-type nucleosides 16-18 through pyrimidine intermediates. Regioselective ring opening of the oxirane ring of ( -)-8 and (+)-8 resulted in adenine-. cytosine- and uracil-based carbocyclic nucleosides 19-21 in a single-step synthesis (C) 2010 Elsevier Ltd All rights reserved
Carbocyclic nucleosides from enantiomeric, α-pinane-based aminodiols
摘要:
Starting from (1R,25,3S.5R)- and (15,2R,3R,5S)-6,6-dimethylspiro[bicyclo[3 1.1]heptane-2.2'-oxiran]-3-ol (-)-8 and (+)-8, two comparative syntheses were developed for pinane-based chiral carbocyclic nucleosides The regioselective ring opening of the spiro-oxirane ring of (-)-8 and (+)-8 with NaN(3) resulted in azidodiols (-)-9 and (+)-9. Catalytic reduction of (-)-9 and (+)-9 furnished chiral aminodiols (-)-10 and (+)-10, which were transformed by linear synthesis to purine-type nucleosides 16-18 through pyrimidine intermediates. Regioselective ring opening of the oxirane ring of ( -)-8 and (+)-8 resulted in adenine-. cytosine- and uracil-based carbocyclic nucleosides 19-21 in a single-step synthesis (C) 2010 Elsevier Ltd All rights reserved
Carbocyclic nucleosides from enantiomeric, α-pinane-based aminodiols
作者:Zsolt Szakonyi、Ferenc Fülöp
DOI:10.1016/j.tetasy.2010.04.054
日期:2010.4
Starting from (1R,25,3S.5R)- and (15,2R,3R,5S)-6,6-dimethylspiro[bicyclo[3 1.1]heptane-2.2'-oxiran]-3-ol (-)-8 and (+)-8, two comparative syntheses were developed for pinane-based chiral carbocyclic nucleosides The regioselective ring opening of the spiro-oxirane ring of (-)-8 and (+)-8 with NaN(3) resulted in azidodiols (-)-9 and (+)-9. Catalytic reduction of (-)-9 and (+)-9 furnished chiral aminodiols (-)-10 and (+)-10, which were transformed by linear synthesis to purine-type nucleosides 16-18 through pyrimidine intermediates. Regioselective ring opening of the oxirane ring of ( -)-8 and (+)-8 resulted in adenine-. cytosine- and uracil-based carbocyclic nucleosides 19-21 in a single-step synthesis (C) 2010 Elsevier Ltd All rights reserved