发明授权
US5369098A Hydroxymethyl cyclobutyl purines 失效
羟甲基环丁基嘌呤

Hydroxymethyl cyclobutyl purines
摘要:
Antiviral activity is exhibited by compounds having the formula ##STR1## and their pharmaceutically acceptable salts. R.sub.1 is ##STR2## R.sub.2 is hydrogen, --PO.sub.3 H.sub.2, ##STR3## wherein R.sub.3 is hydrogen, alkyl, substituted alkyl, or aryl, and R.sub.4 is alkyl.
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