The structure of a radiation-protective sulfated polysaccharide, SP-APS, isolated from Spirulina platensis, was investigated by methylation analysis, partial acetolysis and H-1-NMR spectroscopy. The repeating-unit of ...The structure of a radiation-protective sulfated polysaccharide, SP-APS, isolated from Spirulina platensis, was investigated by methylation analysis, partial acetolysis and H-1-NMR spectroscopy. The repeating-unit of SP-APS as branched structures was elucidated.展开更多
The important intermediate for syntheses of various anti-HIV nucleoside analogues, methyl 2,3-dideoxy-3-fluoro-6-O-(p-methylbenzoyl)-alpha-D-ribofuranoside, was synthesized starting from 2-deoxy-D-ribose in 5 steps Wi...The important intermediate for syntheses of various anti-HIV nucleoside analogues, methyl 2,3-dideoxy-3-fluoro-6-O-(p-methylbenzoyl)-alpha-D-ribofuranoside, was synthesized starting from 2-deoxy-D-ribose in 5 steps With an overall yield of 24%. This strategy can be also used for synthesizing other analogues with various substitutions at 3-C position.展开更多
基金Project supported by the State Science and Technology Commission of China.
文摘The structure of a radiation-protective sulfated polysaccharide, SP-APS, isolated from Spirulina platensis, was investigated by methylation analysis, partial acetolysis and H-1-NMR spectroscopy. The repeating-unit of SP-APS as branched structures was elucidated.
文摘The important intermediate for syntheses of various anti-HIV nucleoside analogues, methyl 2,3-dideoxy-3-fluoro-6-O-(p-methylbenzoyl)-alpha-D-ribofuranoside, was synthesized starting from 2-deoxy-D-ribose in 5 steps With an overall yield of 24%. This strategy can be also used for synthesizing other analogues with various substitutions at 3-C position.
