Abstract
2‐Methylthio‐7‐deazainosine and its α‐Anomer — Debenzylation of Thionucleosides with Boron TrichlorideDebenzylation of the sugar moiety of pyrrolo[2,3‐d]pyrimidine nucleosides without affecting methoxy or methylthio substituents of the chromophore has been accomplished by the action of boron trichloride/dichloromethane at — 78°C. Applying this method to the protected derivatives 1b or 2b the methylthio nucleosides 3 and 4 were obtained in high yields.
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