25777
The most potent compound , 3 alpha - 2 ' , 2 ' - dimethylsuccinic acyl epi - aleuritolic acid ( 11 ) , displayed significant anti - HIV activity with an EC50 value of 5 . 80 mu M .
 Chemical: 3 alpha - 2 ' , 2 ' - dimethylsuccinic acyl epi - aleuritolic acid
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 Chemical: 3 alpha - 2 ' , 2 ' - dimethylsuccinic acyl epi - aleuritolic acid