Hypocoprins A-C: new sesquiterpenoids from the coprophilous fungus Hypocopra rostrata.

Hypocoprins A-C: new sesquiterpenoids from the coprophilous fungus Hypocopra rostrata.
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DOI:
10.1021/np5007718
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发表时间:
2015-03-27
影响因子:
5.1
通讯作者:
Gloer, James B.
Gloer, James B.
中科院分区:
生物学2区
文献类型:
--
作者:
Jayanetti, Dinith R.;Yue, Qun;Bills, Gerald F.;Gloer, James B.

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对从得克萨斯州马粪中分离的嗜粪真菌Hypocopra rostrata (TTI-0009, NRRL 66178)进行了研究,分离出三个新的倍半萜类化合物,我们将其命名为hypocoprins a - c(1-3),以及已知的真菌代谢物helvolic acid。新的代谢物具有独特的环系统,由融合的环丙烷和环癸烯单位组成,以前从未报道过来自真菌来源。化合物1和3适度抑制金黄色葡萄球菌的生长。这些代谢物的结构主要是通过二维核磁共振和HRESITOFMS数据分析确定的。通过核磁共振j值和NOESY数据的解释以及Mosher方法的应用,确定了相对构型和绝对构型。这些结果代表了首次报道的化学从任何菌株的Hypocopra属。
Studies of the coprophilous fungus Hypocopra rostrata (TTI-0009, NRRL 66178) isolated from a sample of horse dung collected in Texas led to the isolation of three new sesquiterpenoids that we named hypocoprins A–C (1–3), together with the known fungal metabolite helvolic acid. The new metabolites have a distinctive ring system consisting of fused cyclopropane and cyclodecene units not previously reported from a fungal source. Compounds 1 and 3 moderately inhibited growth of Staphylococcus aureus. The structures of these metabolites were assigned mainly by analysis of 2D NMR and HRESITOFMS data. Relative and absolute configurations were assigned by interpretation of NMR J-values and NOESY data and by application of Mosher’s method. These results represent the first report of chemistry from any strain of the genus Hypocopra.
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发表时间: 2001-08-01
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