S. Janardhanam et Kp. Nambiar, INVESTIGATION OF STEREOSELECTIVITIES IN THE COUPLING REACTIONS OF 1-O-METHYL-3, 5-DI-O-P-TOLUOYL-2-DEOXYRIBOFURANOSIDE WITH PURINES AND PYRIMIDINES, Tetrahedron letters, 35(22), 1994, pp. 3657-3660
Stereoselectivities in the coupling reaction between -O-methyl-3,5-di-
O-p-toluoyl-2-deoxyribofuranoside and suitably protected purine and py
rimidine derivatives have been examined in acetonitrile with varying e
quivalents of SnCl4. The best result in alpha-nucleoside formation was
obtained when the coupling reaction was carried out in the presence o
f ten equivalents of SnCl4.