Journal
JOURNAL OF NATURAL PRODUCTS
Volume 82, Issue 11, Pages 3111-3120Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.jnatprod.9b00652
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Funding
- National Natural Science Foundation of China [81403050, 31870330]
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Buxaustroines A-N (1-14), a series of triterpenoidal alkaloids featuring a novel 17(13 -> 18)abeo motif, were obtained from the extract of Buxus austro-yunnanensis. Their structures were assigned based on NMR data analysis and X-ray diffraction crystallography. A putative biosynthetic pathway for one of the alkaloids from a co-isolate 15 is proposed. In the assessment of their bioactivities, some of the compounds displayed protective effects against doxorubicin-induced injury of myocardial cells. Preliminary structure-activity relationship studies of 1-14, which are based on the same skeleton, were conducted.
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