Two novel fomannosane-type sesquiterpenoids from the culture of the basidiomycete Agrocybe salicacola

Abstract

Two novel fomannosane-type sesquiterpenoids, agrocybins H (1) and I (2), together with a known compound illudosin (3), were isolated from the culture broth of the mushroom Agrocybe salicacola. Their structures were elucidated by extensive spectroscopic analysis. The relative stereochemistry of 1 was determined by the use of single crystal X-ray crystallographic diffraction. [Figure not available: see fulltext.].