摘要:
The invention relates to a diastereoselective process for the preparation of compounds of formula (I), wherein W is S, S.dbd.O, SO.sub.2 or O; X is S, S.dbd.O, SO.sub.2 or O; R.sub.1 is hydrogen or acyl, and R.sub.2 is a purine or pyrimidine base or an analogue or derivative thereof. ##STR1##
摘要:
The invention relates to a diastereoselective process for the preparation of compounds of formula (1), wherein W is S, S═O, SO2 or O; X is S, S═O, SO2 or O; R1 is hydrogen or acyl, and R2 is a purine or pyrimidine base or an analogue or derivative thereof.
摘要:
A process for the preparation of the compound of formula (I) ##STR1## or a salt thereof which comprises reducing the compound of formula (II) ##STR2## or a salt thereof. The novel intermediate of formula (II) and processes for preparing it are also described.
摘要:
A process for the preparation of the compound of formula (I) ##STR1## or a salt thereof which comprises reducing the compound of formula (II) ##STR2## or a salt thereof. The novel intermediate of formula (II) and processes for preparing it are also described.