Characterisation of two unique sesquiterpenoids from Trichoderma hypoxylon

Abstract

Two new sesquiterpenoids, 1–2, together with three known compounds, were isolated from Trichoderma hypoxylon. Among the known compounds, compound 4 was isolated as naturally occurring compound for the first time. The structures of these new compounds were characterized by HR-ESI-MS and spectroscopic methods including 1D and 2D NMR. The absolute configurations of 1–2 were assigned by electronic circular dichroism (ECD) calculations.

Keywords

• sesquiterpenes
• fungi
• trichoderma
• glycoside
• rearranged cuparane