A novel phenolic metabolite, ornatipolide, was isolated from the Boletus ornatipes fungus. Its structure was established by a combination of spectroscopic and chemical methods, and by an X-ray crystallographic analysis.
一种新型酚类代谢物——奥纳蒂波利德(ornatipolide)从牛
Syntheses of retipolide E and ornatipolide, 14-membered biaryl-ether macrolactones from mushrooms
second approach allowed the synthesis of either racemic or enantiomericallypure retipolide E (5). In the latter case Evans' methodology was used for the introduction of stereogenic center via stereoselective alkylation. The oxazolidinone auxiliary was removed under mild conditions by exchange for 2-arylethanol 22 with Otera's distannoxane catalyst. Synthetic retipolide E allowed the identification of this