[CH2:1]([N:3]1[C:12](=[O:13])[C:11]2[N:10]([CH2:14][CH2:15][CH2:16][CH2:17][CH:18]=[CH2:19])[CH:9]=[N:8][C:7]=2[N:6]([CH2:20][CH3:21])[C:4]1=[O:5])[CH3:2].C([O:24]CC)C>[Os](=O)(=O)(=O)=O>[CH2:1]([N:3]1[C:12](=[O:13])[C:11]2[N:10]([CH2:14][CH2:15][CH2:16][CH2:17][CH:18]3[O:24][CH2:19]3)[CH:9]=[N:8][C:7]=2[N:6]([CH2:20][CH3:21])[C:4]1=[O:5])[CH3:2]The same compound was also obtained by hydroxylation of 1,3-diethyl-7-(5-hexenyl)xanthine ##STR19## with osmium tetroxide: 0.73 g of 1,3-diethyl-7-(5-hexenyl)xanthine in 11 ml of diethyl ether was added dropwise with stirring in 5 minutes to 0.65 g of osmium tetroxide in 11 ml of diethyl ether at room temperature.
Loading…