Diarylcyclopentendione metabolite obtained from a Preussia typharum isolate procured using an unconventional cultivation approach.

Diarylcyclopentendione metabolite obtained from a Preussia typharum isolate procured using an unconventional cultivation approach.
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DOI:
10.1021/np300473h
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发表时间:
2012-10-26
影响因子:
5.1
通讯作者:
Cichewicz RH
Cichewicz RH
中科院分区:
生物学2区
文献类型:
--
作者:
Du L;King JB;Morrow BH;Shen JK;Miller AN;Cichewicz RH

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一种不常见的2,5-二芳基环戊烯酮化合物普鲁西酮(1)和一种新的联苯化合物1 ′,5-二甲氧基-3,5 ′-二甲基-2,3 ′-氧基联苯-1,2 ′-二醇(4),以及两种已知的联苯化合物5-甲氧基-3,5 ′-二甲基-2,3 ′-氧基联苯-1,1 ′,2 '-三醇(2)和莎草素(3)从使用一组非常规培养基配方获得的普鲁士typharum分离物获得。新化合物的结构经核磁共振和质谱确证,化合物1的绝对构型经量子化学ECD和VCD计算确定。测定了化合物1-4的抑菌活性和清除DPPH自由基活性。化合物2和4表现出与阳性对照抗坏血酸相当的DPPH自由基清除活性。
An uncommon 2,5-diarylcyclopenteneone compound preussidone (1) and a new biphenyl compound 1',5-dimethoxy-3,5'-dimethyl-2,3'-oxybiphenyl-1,2'-diol (4), together with two known biphenyl compounds 5-methoxy-3,5'-dimethyl-2,3'-oxybiphenyl-1,1',2'-triol (2) and cyperin (3) were obtained from a Preussia typharum isolate that was procured using a panel of unconventional media formulations. The structures of the new compounds were established by NMR and mass spectrometry, while the absolute configuration of 1 was assigned by quantum chemical ECD and VCD calculations. The antimicrobial and DPPH radical scavenging activities of 1-4 were tested. Compounds 2 and 4 exhibited DPPH radical scavenging activities that were comparable to the positive control ascorbic acid.
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