Related Experiment Video
Updated: Aug 17, 2026

Isolation and Purification of Fungal β-Glucan as an Immunotherapy Strategy for Glioblastoma
Published on: June 2, 2023
Lanostane triterpenoids from the inedible mushroom Fomitopsis spraguei
Dang Ngoc Quang1, Yuuki Arakawa, Toshihiro Hashimoto
1Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Yamashiro-cho, Tokushima 770-8514, Japan.
Abstract:
Investigation of the methanolic extract of the inedible mushroom Fomitopsis spraguei (Polyporaceae) led to the isolation of five lanostane-type triterpenoids (1-5): three new compounds named fomitopsins A-C (2-4), and two known compounds, quercinic acid C (1) and 3alpha-carboxyacetyl-12beta-hydroxyquercinic acid (5). Their structures were determined by 2D NMR, MS, IR, UV spectra, and X-ray crystallographic analyses. An X-ray crystal structure analysis of quercinic acid C (1) established its stereochemistry as 3R,12R-dihydroxy-24R-methyl-23-oxo-25S-lanost-8-en-26-oic acid.
Related Concept Videos
Antifungal Agents
Fungal Phylum Ascomycota
Fungal Group Zygomycota
Antiasthma Drugs: Leukotriene Modifiers
Leukotriene modifiers work through two distinct mechanisms:
Anthelminthic Agents
Antiasthma Drugs: Muscarinic Receptor Antagonists
Antimuscarinic agents compete with ACh for the same binding site on the muscarinic receptors. By binding to these receptors, they inhibit the downstream effects of ACh and block the parasympathetic...