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Two new taraxastane-type triterpenes, 3b, 21b-dihydroxyl-20(30)-en-taraxastane 1 and 3b, 30-dihydroxy-20(21)-en-taraxastane 2, were isolated from Saussurea petrovii. Their structures were elucidated by spectral methods (EIMS, IR, 1D and 2DNMR).