The cyclization of 8-carboxamido-2′-O-tosyladenosine. A new preparation of 9-β-<scp>D</scp>-arabinofuranosyladenine (ara-A)
作者:K. J. Divakar、Colin B. Reese
DOI:10.1039/c39800001191
日期:——
In alkaline solution, 8-carboxamido-2′-O-tosyladenosine (4e; R2= R3= H), which may be prepared from adenosine in 7 steps, readily cyclizes to give (5); in neutral or weakly basic solution, it undergoes virtually quantitative conversion into ara-A (1a).
在碱性溶液中,可由腺苷分7步制备的8-羧酰胺基2'- O-甲苯磺酰基腺苷(4e; R 2 = R 3 = H)容易环化得到(5)。在中性或弱碱性溶液中,它几乎定量地转化为ara-A(1a)。