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. 2010 Mar;24(4):349-56.
doi: 10.1080/14786410903125401.

Tricinonoic acid and tricindiol, two new irregular sesquiterpenes from an endophytic strain of Fusarium tricinctum

Bharat P Bashyal  1 , A A Leslie Gunatilaka
Affiliations

Tricinonoic acid and tricindiol, two new irregular sesquiterpenes from an endophytic strain of Fusarium tricinctum

Bharat P Bashyal et al. Nat Prod Res. 2010 Mar.

Abstract

Two new rare irregular sesquiterpenes, tricinonoic acid (1) and tricindiol (2), and the known furanopyrrolidones, NG-391 (3) and NG-393 (4), have been isolated from an EtOAc extract of Fusarium tricinctum, a fungus endophytic in the root tissue of the Sonoran desert plant, Rumex hymenosepalus. The structures of 1 and 2 were elucidated on the basis of their high-resolution mass, 1D and 2D NMR spectroscopic data. A possible biosynthetic route to 1 and 2 from farnesyl diphosphate is proposed.

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Figures

Figure 1
Figure 1
Selected HMBC correlations for 1.
Figure 2
Figure 2
Δδ value [Δδ (in ppm)= δS−δR] obtained for (S)- and (R)-MTPA esters of trincindiol (2).
Scheme 1
Scheme 1
Possible biosynthetic origin of 1 and 2 from E,Z-farmesyl diphosphate (7).
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