Synthesis of betulin diacetate and betulin dipropionate
Vladimir Alexandrovich Levdansky, Alexander Alexandrovich Kondrasenko, Alexander Vladimirovich Levdansky, Boris Nikolaevich Kuznetsov
Abstract
It was found that esterification of betulin with acetic and propionic acids in refluxing toluene in the presence of phosphoric acid leads to the formation of betulin 3,28-diacetate and betulin 3,28-dipropionate.