Symmetrically and unsymmetrically bridged methylenebis(allopurinols): synthesis of dimeric potential anti-gout drugs.
نویسندگان
چکیده
Liquid-liquid phase transfer alkylation of 4-methoxy-pyrazolo[3,4-d]-pyrimidine (1a) with a dichloromethane/dibromomethane mixture (3:1, v/v) gave the regioisomeric methylenebis(heterocycles) 3a-5a. These were converted by dilute aqueous sodium hydroxide containing dimethylsulfoxide (DMSO) at concentrations between 0 and 60 vol-% into the methylenebis(allopurinols) 3b-5b by nucleophilic SNAr reactions at C(4). The effect of DMSO on the reaction kinetics was investigated.
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ورودعنوان ژورنال:
- Molecules
دوره 12 3 شماره
صفحات -
تاریخ انتشار 2007