期刊
JOURNAL OF NATURAL PRODUCTS
卷 78, 期 4, 页码 803-810出版社
AMER CHEMICAL SOC
DOI: 10.1021/np501049g
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资金
- Basic Science Research Program through the National Research Foundation of Korea (NRF) grant - Korean Government [2014R1A2A2A01006793]
- Priority Research Centers Program through the National Research Foundation of Korea (NRF) grant - Korean Government [NRF-2009-0093815]
- Global R&D Center (GRDC) Program through the National Research Foundation of Korea (NRF) grant - Korean Government [NRF-2010-0078]
- National Research Foundation of Korea [2014R1A2A2A01006793] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Veratrum nigrum is recognized as a medicinal plant used for the treatment of hypertension, stroke, and excessive phlegm. Chemical investigation of the roots and rhizomes led to the isolation of five new steroidal alkaloids, jervine-3-yl formate (1), veramarine-3-yl formate (2), jerv-5,11-diene-3 beta,13 beta-diol (3), (1 beta,3 beta,5 beta)-1,3-dihydroxyjervanin-12(13)-en-11-one (4), and veratramine-3-yl acetate (5). Compounds 1 and 5 exhibited potent inhibitory activity (11.3 and 4.7 mu M, respectively) against protein tyrosine phosphatase 1B (PTP1B), which has emerged as a viable target for treatment of type 2 diabetes mellitus. On the basis of their PTP1B inhibitory activity, the compounds were evaluated for their potential to enhance glucose uptake in C2C12 skeletal muscle cells. The insulin-stimulated glucose uptake was enhanced upon treatment with compounds 1 and 5 (10 mu M) by 49.9 +/- 6.5% and 56.0 +/- 9.7%, respectively, in a more potent manner than that with the positive control rosiglitazone (47.3 +/- 3.4% at 30 mu M). These results suggest that steroidal alkaloids serve as practical antidiabetes mellitus leads capable of enhancing glucose uptake.
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