Chemical constituents from Aeschynanthus longicaullis

OBJECTIVE To study the chemical constituents from Aeschynanthus longicaullis. METHOD The column chromatographic techniques were applied to isolate the constituents. The spectroscopie methods were used of EI-MS and NMR to identify the structures of the separated compounds. RESULT Seven compounds were isolated from the ethyl acetate extract of A. longicaullis, whose structures were elucidated as cryptomeridiol (1), 4 (15) -eudesmene-1beta, 6alpha-diol (2), 2,5-bornanediol (3), isovanillic acid (4), vanillic acid (5), stigmast-5 (6) , 22 (23)-diene-3beta-ol (6) and beta-sitosterol (7). CONCLUSION Compounds 1-5 were isolated for the first time from Gesneriaceae and 6-7 were isolated for the first time from this plant.