Objective: To study the chemical constituents from the alcohol extract of root bark of Celastrus angulatus. Method: The compounds

whose structures were confirmed by NMR spectra

were separated and purified by silica gel and preparative HPLC. Result: The structures of eleven compounds were conformed

they were celahin B(1)

celastrine A(2)

celahin D(3)

angulatin E(4)

angulatin A(5)

celangulatin C(6)

celangulin XIX(7)

angulatin P(8)

angulatin H(9)

celangulin III(10)

and angulatin J(11). Conclusion: Compound 1-3 were first found in C.angulatus.