| In vitro: |
| Planta Med. 2006 Jan;72(1):84-6. | | Two new abietane diterpenoids from Salvia yunnanensis.[Pubmed: 16450305] | Two new abietane diterpenoids, yunnannin A and danshenol C, were isolated from Salvia yunnanensis together with ten known diterpenoids, danshenol A, Przewalskin, tanshinone IIA, tanshinone I, crypotanshinone, 1,2-dihydrotanshinone, tanshinlactone, 5,6-dehydrosugiol, 12-hydroxy-6,7-seco-8,11,3-abietatriene-6,7-dial and phytol.
METHODS AND RESULTS:
Their structures were established based on spectroscopic data, chemical reactions and comparison with literature data. Compounds were tested for their antitumor activity in T-24, QGY, K562, Me180 and BIU87 cell lines. Compound showed inhibited growth of K562 (IC50=0.53 microg/mL), T-24 (IC50=7.94 microg/mL), QGY (IC50=4.65 microg/mL) and Me180 (IC50=6.89 microg/mL) cell lines while compound was inactive. Compound showed moderate inhibitory activity on QGY (IC50=16.75 microg/mL) and Me180 (IC50=5.84 microg/mL) cells. | | Org.Lett.,2006 Sep 28;8(20):4453-6. | | Przewalskin A: A new C23 terpenoid with a 6/6/7 carbon ring skeleton from Salvia przewalskii maxim.[Pubmed: 16986923] |
METHODS AND RESULTS:
Przewalskin A (1), a novel C23 terpenoid with a 6/6/7 carbon ring skeleton, was isolated from Salvia przewalskii. Its structure was determined by comprehensive 1D NMR, 2D NMR, and MS spectroscopic analysis and subsequently confirmed by a single-crystal X-ray diffraction study of its PDC oxidation derivative (2). Compounds 1 and 2 showed modest anti-HIV-1 activity with EC50 = 41 and 89 microg/mL, respectively. | | Org Lett. 2007 Jan 18;9(2):291-3. | | Przewalskin B, a novel diterpenoid with an unprecedented skeleton from Salvia przewalskii maxim.[Pubmed: 17217287 ] | P
METHODS AND RESULTS:
rzewalskin B (1), a novel diterpenoid possessing a unique skeleton, was isolated from a Chinese medicinal plant Salvia przewalskii. Its structure and relative stereochemistry were elucidated by extensive NMR analysis and a single-crystal X-ray study. A possible biosynthetic pathway for 1 was proposed. Compound 1 exhibited modest anti-HIV-1 activity with EC50 = 30 microg/mL. |
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