Thành phần hóa học cây Cóc đỏ (Lumnitzera littorea) thu hái tại tỉnh Thừa Thiên Huế, Việt Nam

From the ethyl acetate and methanol extracts of the leaves and stems of Lumnitzera littorea (Jack) Voigt., collected in Thua Thien-Hue province, eleven compounds have been isolated. Their structures were elucidated as two resorcinolic lipids (1,3-dihydroxy-2-methyl-5-tridecylbenzene 1 , 1,3-dihydroxy-5-nonadecylbenzene 2 ), two flavonoids (quercetin 3 and astragalin 4 ), two hexitols (1-acetyl-D - mannitol 5 and D-mannitol 6 ), α -D-glucopyranosyl- β -D-glucopyranoside (Neotrehalose 7 ) as octaacetate, fructopyranose as tetraacetate ( 8) , β- sitosterol glycoside ( 9 ), β -sitosterol ( 10 ) and stigmasterol ( 11 ) as a mixture of 1:1 ratio. All of these compounds have been isolated for the first time from Lumnitzera littorea. Keywords . Lumnitzera littorea , sterols, resorcinolic lipids, flavonoids, hexitols.