Traditional Chinese Medicine Characteristics of Lagerstroemia speciosa

Source of medicinal materials: roots and leaves of Lagerstroemia speciosa of Lysimachiaceae.

Harvest and storage: dig roots in autumn and winter, wash, slice and dry in the sun. Leaves, summer. Picking and drying in autumn. Pharmacological effect: By observing the effects of various plant extracts on oral glucose uptake of Ehrlich ascites cancer cells, it is found that Lagerstroemia speciosa is one of the plants that promote glucose uptake. Two triterpenoids, colesulfonic acid and masri acid, were isolated. The former is the promoter of glucose transport, so it has hypoglycemic activity.

Indications: ulcer; Detoxify. Main carbuncle sore swelling toxin

Usage and dosage: external use: appropriate amount, tamping; Or grinding and smearing; Or fried and washed. Lagacetals in leaves are dibutyloxy butane (1, 1- dibutyloxy butane) and pentanol (amyla 1 alcohol) instead of gallic acid (el-lagicacid). It also contains gallic tannins: Lagerstanins A, B, C and pomegranate glycoside); From pomegranate peel; Their structures are 2,3: 4,6-bis -O-(S)- hexahydrobiphenyl diacyl -D- gluconic acid [2,3: 4,6-bis -O-(S)- hexahydrodibenzoyl -D- gluconic acid], 2,3,5-o-gluconic acid. 5-o-(s, r)- xanthoyl-4,6 -O- (s)-hexahydroxydibenzoyl -D- gluconic acid], 5-o- gallioyl hexahydroxy-4,6-o-(s)-hexahydroxybiphenyl diacyl -D- gluconic acid [5,6-. Di -O- gallic acid-4,6 also contains triterpenoids: maslinicacid is 2α- hydroxy oleanolic acid, and colosolicacid is 2α- hydroxy ursolic acid. It also contains lipid (Iipoid) and 16 amino acids.