method for the preparation of the substance exchange working product, a purine 3 ', 5' - cyclofosfaatverbinding contains.molded product obtained by application of the method and procedure for the preparation of a purine 3 ', 5' - cyclofosfaatverbinding,suitable for use in the method for the preparation of a medicine.

摘要

Nucleotides of formula (I) where A=H, OH, or (if X=Br) NH2, B=H or NH2 Y=H or OH, and X=hal, OH, an ether residue SH, a thioether residue, or opt subst. NH2. have similar physiological properties to adenosine-3',5'-cyclic phosphate (II) but with greater enzymic resistance, and an increased lipolytic/glycogenolytic activity ratio, (I) are prepd. pref. from I (X=H), by halogenation, and opt. replacement of the halogen.