| Literature DB >> 23736977 |
Yuji Narukawa1, Akiko Niimura, Hitomi Noguchi, Hiroomi Tamura, Fumiyuki Kiuchi.
Abstract
Four new diterpenoids (1-4), along with eight known diterpenoids (5-12) were isolated from the acetone extract of Leonurus herb (aerial parts of Leonurus sibiricus L.). The structures of the compounds were determined by spectroscopic methods. Among the isolated compounds, compounds 2, 3, 8, 9 and 10 showed inhibitory activity against human liver cytosol estrogen sulfotransferase (E-ST), which plays a key role in the maintenance of cellular estrogen levels. Compound 2 showed the strongest activity with an IC50 value of 7.9 μM, which is comparable to the activity of the positive control, meclofenamic acid (IC50 5.4 μM).Entities:
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Year: 2013 PMID: 23736977 DOI: 10.1007/s11418-013-0781-0
Source DB: PubMed Journal: J Nat Med ISSN: 1340-3443 Impact factor: 2.343