| 摘要 |
Anti-viral title compds.[I; R = H, C1-4 acyl; R1 = (R2) R3C(OH)-(where, R2 is C1-3 cycloalkyl, C3-6 cyclo alkyl methyl, C3-6 cycloalkyl ethyl, (R2)R4:C- (where, R4 is C1-7 alkylydene were prepd. II was reacted with C1-7 alkyl magnesium halide or C1-7 alkyllithium and hydrolysed to give Ia(R1 = (R2)R3COH-; R = H). Ia was dehydrated to give Ib(R1 = (R2)R4: C-; R = H) and acylation of Ib gave I.
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