| 摘要 |
Title compds. (I; R = halogen, lower alkoxy-substituted phenyl or cyclohexyl) having strong and prolonged coronary dilating and platelet aggregation inhibitorry actions, were prepd. by reaction of II(R1,R2,R3 = protected hydroxy) and III(R4 = H,R). Thuo, 5-amino-1- -D-riboflanocylimidazol-4-carboxamide was reacted with propionic anhydride to give 5-amino-1-(2,3,5-tri-o-propionyl-β-D-riboflanocyl)imidazol-4-carboxamide followed by reacting with PCl8 to give II(R1,R2,R3 = propionyl). I was abtained by reaction of II and III (R = ph; R4 = H).
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