helped them to immerse themselves more in the problem and to
assimilate the material. The results were
The
reaction of 8-bromo-substituted 3-methyl-7-(thietan-3-yl)-3,7-dihydro-1H-purine-2,6-diones
The
reaction of paeoniflorin (PF) with refluxing MeOH in the presence of cation exchanger KU-2-8 (H
previously studied
reactions of 2-[6-methyl-2,4-dioxo1-(thietan-3-yl)-1,2,3,4-tetrahydropyrimidin-3-yl