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In this study, we found that the hexane fraction of Danshen, the dried root of Salvia miltiorrhiza (Lamiaceae), exerted antiproliferative effects on human leukemia cells. Phytochemical investigation of the hexane fraction achieved the isolation of the tanshinone diterpenes: dihydrotanshinone I (1), trijuganone C (2), trijuganone B (3), cryptotanshinone (4), tanshinone IIA (5), and tanshinone I (6)...
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