[Chemical Constituents from Salvia przewalskii Root].

Objective: To study the chemical constituents of the root of Salvia przewalakii.

Methods: The chemical constituents were isolated and purified by means of chromatographic techniques and their structures were elucidated by spectroscopic methods.

Results: 17 compounds were isolated and identified as danshenxinkun B (1), danshenol C (2), isotanshinone (3), 1,2-dihydroisodihydrotanshinone-I (4), isotanshinone-II A (5), dihydrotanshinone-I (6), tanshinlactone (7), danshenol B (8), tanshinone-I (9), danshenspiroketallactone (10), ferrugino (11), epi-danshenspiroketallactone (12), danshenxinkun A (13), sapriolactone (14), 12-hydroxy-6,7-secoabieta-8,11,13-trien-6,7-diol (15), 6α-hydroxysugiol (16) and hypargenin B (17).

Conclusion: Compounds 1 - 8 are isolated from this plant for the first time.