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Published on: March 19, 2015
Microbial transformation of Norkurarinone by Cunninghamella blakesleana AS 3.970
Yan-Qiu Shi1, Xiu-Lan Xin, Hu-Cheng Zhang
1State Key Laboratory of Chemical Resource Engineering, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing, China.
Abstract:
In this paper, microbial transformation of norkurarinone (1) by Cunninghamella blakesleana AS 3.970 was investigated and seven transformed products were isolated and characterized as kurarinone (2), 4″,5″-dihydroxykurarinone (3), 6″-hydroxyl-2'-methoxyl-norkurarinone 7-O-β-d-glucoside (4), 6″-hydroxyl-norkurarinone 4'-O-β-d-glucoside (5), 4″,5″-dihydroxynorkurarinone (6), 7-methoxyl-norkurarinone (7), and 7-methoxyl-4″,5″-dihydroxynorkurarinone (8), respectively. Among them, 3-5 are new compounds, and the glycosylation reaction in microbial transformation process was reported rarely. In addition, the cytotoxicities of transformed products (1-8) were also investigated.
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