CH_{3} C_{21}H_{24}O_{10} + H_{2}O = C_{6}H_{12}O_{6} + | (OH)_{3}C_{6}H_{2}·CO·CH·C_{6}H_{4}OH. It is used in medicine as a remedy for malaria, having marked anti-periodic properties. =Glycyphyllin=, C_{21}H_{24}O_{9}, found in leaves of Smilax, yields rhamnose and phloretin, when hydrolyzed. =Iridin=, C_{24}H_{26}O_{13} (glucose and irigenin), found in rootstocks of Iris, is used in medicine as a cathartic and diuretic. =Baptisin=, C_{26}H_{32}O_{14}·9H_{2}O (two rhamnose and baptigenin), found in roots of wild indigo (_Baptisia_), has strong purgative properties. =Hesperidin=, C_{50}H_{60}O_{27} (one rhamnose+two glucose+hesperitin), is found in the pulp of lemons and oranges. The characteristic phenol group which is present in these glucosides has the following structural formula, in each case, the X indicating the H atom which is replaced by the sugar molecule to form the glucoside: Phloretin /\ /\ / \----C----CH------/ \ | | ║ | | |OX HO| |OH O CH_{3} | |OH \ / \ / \/ \/ Irigenin O / \ -CH_{2}-C-O--/\ /\ \ / \O·CH_{3} / \ O-| | | | | |OX CH_{3}O-| | \ / \ / \/ O | CH_{3} Hesperitin /\ /\ / \ / \ HO| |-CH=CH-C-| |OX CH_{3}O| | ║ | | \ / O \ / \/ \/ THE ALCOHOL GLUCOSIDES =Salicin=, C_{13}H_{18}O_{7} (glucose+saligenin, or _o_-oxy benzyl alcohol) is found in the bark, leaves, and flowers of most species of willow, the proportion present depending upon the season of the year, and the sex of the tree. It is used as a remedy against fevers and rheumatism, causing less digestive disturbances than the salicylic acid which is the oxidation product of saligenin and which is sometimes used as a remedy for rheumatism.