[The sesquiterpenoids from Celastrus flagellaris]

A new sesquiterpenoid (1) named as celastrine B along with seven known compounds 1 alpha, 6 beta, 13-triacetoxy-9 beta-benzoyloxy-beta-dihydroagarofuran(2), triptogelin G-1(3), 1 alpha, 6 beta-diacetoxy-9 beta-benzoyloxy-beta-dihydroagarofuran (4), triptogelin F-2 (5), 1 alpha, 2 alpha-diacetoxy-9 beta-cinnamoyloxy-beta-dihydroagarofuran (6), celaforlin B-3 (7), 1 alpha, 6 beta-diacetoxy-8 alpha-cinnamoyloxy-9 alpha-benzoyloxy-beta-dihydroagarofuran(8) were isolated for the first time from the seed oil of Celastrus flagellaris Rupr. and their structures elucidated by UV, IR, MS and 1HNMR, 13CNMR, DEPT, 1H-1H COSY, 13C-1H COSY, NOESY and HMBC.