Page 1. NUCLEOSIDES & NUCLEOTIDES, 13(4), 925-937 (1994) ... The 1H NMR spectrum of this nucleoside exhibited a doublet (J=6.8 Hz) for H-1' at 6.18 ppm while the H-1' of ribonucleoside 4 appeared at 6.09 ppm (J=6.8 Hz). ... THIENO[3,24JPYRIMIDINE NUCLEOSIDES 929 ...