کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1364714 981544 2006 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Preparation of yuanhuacine and relative daphne diterpene esters from Daphne genkwa and structure–activity relationship of potent inhibitory activity against DNA topoisomerase I
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
پیش نمایش صفحه اول مقاله
Preparation of yuanhuacine and relative daphne diterpene esters from Daphne genkwa and structure–activity relationship of potent inhibitory activity against DNA topoisomerase I
چکیده انگلیسی

Two new daphne diterpene esters Yuanhuajine (2) and Yuanhuagine (4), together with three known daphne diterpene esters yuanhuacine (1), yuanhuadine (3), and yuanhuapine (5), were isolated and identified from Daphne genkwa, a traditional Chinese medicine. Their structures were elucidated by a combination of UV, IR, MS and NMR (1H NMR, 13C NMR, HSQC, and HMBC) spectra. In order to explore the structure–activity relationship, three compounds 6, 7, and 8 were prepared as three derivatives of 1. Inhibitory activities against DNA topoisomerase I (topo I) were assessed for the compounds 1–8. These compounds, except for 8, exhibited potent inhibitory activities against DNA topo I at IC50 levels of 11.1–53.4 μM and they are new type of topo I inhibitors bearing different structures compared with the known topo I inhibitors. The agarose-gel electrophoresis experiments showed that the orthoester group of daphne diterpene esters was necessary for the inhibitory activity against DNA topo I, and the inhibition against DNA topo I is probably one of the anti-tumor mechanisms of daphne diterpene esters.

Two new daphne diterpene esters 2 and 4, together with three known compounds, were isolated from the plant Daphne genkwa, and three derivatives were synthesized. These compounds exhibited potent inhibitory activities against DNA topoisomerase I.Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioorganic & Medicinal Chemistry - Volume 14, Issue 11, 1 June 2006, Pages 3888–3895
نویسندگان
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