1. Cryptoporic acid S, a new drimane-type sesquiterpene ether of isocitric acid from the fruiting bodies of Cryptoporus volvatus.
- Author
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Wang JC, Li GZ, Lv N, Shen LG, Shi LL, and Si JY
- Subjects
- Antioxidants chemistry, Antioxidants pharmacology, Biphenyl Compounds pharmacology, China, Ergosterol chemistry, Ethers, Fruiting Bodies, Fungal chemistry, Isocitrates chemistry, Isocitrates pharmacology, Molecular Structure, Picrates pharmacology, Polycyclic Sesquiterpenes, Sesquiterpenes chemistry, Sesquiterpenes pharmacology, Sitosterols chemistry, Stigmasterol analogs & derivatives, Stigmasterol chemistry, Stigmasterol isolation & purification, Antioxidants isolation & purification, Coriolaceae chemistry, Isocitrates isolation & purification, Sesquiterpenes isolation & purification
- Abstract
A new drimane-type sesquiterpene with an isocitric acid moiety, cryptoporic acid S (1), together with six known compounds, cryptoporic acid D (2), β-sitosterol (3), β-daucosterol (4), stigmast-4-en-3-one (5), ergosterol (6), and (22E,24R)-ergosta-7,22-diene-3β,5α,6β-triol (7), was isolated from the fruiting bodies of Cryptoporus volvatus. The structures of these compounds were established on the basis of UV, IR, MS, 1D and 2D NMR analysis. In the meanwhile, compounds 1 and 2 were evaluated for antioxidant activity using the methods of 2,2-diphenyl-1-picrylhydrazyl free radical scavenging activity (DPPH-RSA) and ferric reducing antioxidant power (FRAP) assay, and they exhibited moderate antioxidant activities.
- Published
- 2017
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