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  • Author: Ji-Kai Liu x
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A new sesquiterpene of humulene type, named 2β, α-epoxy-6Z, 9Z-humuladien-8α-ol (1) together with a known compound lactarinic acid was isolated from the fruiting bodies of Lactarius hirtipes. Their structures were established on the basis of spectral evidence (MS, IR, NMR, HMBC, HMQC, 1H-1H COSY, ROSEY experiments). Compound 1 was found as the first humulene-type sesquiterpene in higher fungi.

Abstract

A new p-terphenyl, named aurantiotinin A (1), together with ganbajunin C (2) and atromentin (3) were isolated from the fruiting bodies of the basidiomycete Thelephora aurantiotincta Corner. Their structures were established by spectral (MS, IR, UV, NMR, H-H COSY, HMQC, HMBC measurement) and chemical methods.

Abstract

Two novel phenylacetoxylated p-terphenyl derivatives, namely ganbajunin F (6′-methoxy-2′-phenylacetoxy-3′, 4, 4″, 5′-tetrahydroxy-p-terphenyl), and ganbajunin G (5′-methoxy-2′-phenylacetoxy-3′, 4, 4″, 6′-tetrahydroxy-p-terphenyl), together with a known compound cycloleucomelone were isolated from the fruiting bodies of Thelephora ganbajun Zang. Their structures were established on the basis of spectral (MS, IR, NMR, HMBC, HMQC measure­ment) and chemical evidence.

A new nitrogenous metabolite with p-terphenyl core, sarcodonin δ (1), together with two known p-terphenyl metabolites (7, 8), was isolated from the fruiting bodies of the basidiomycete Sarcodon scabrosus. The structures of these compounds were elucidated by spectral and chemical methods.

Three volatile components, namely benzoic acid ethyl ester (1), 2,6-di-tert-butyl-p-benzoquinone (BHT-quinone) (2), and 3,5-di-tert-butyl-4-hydroxybenzaldehyde (BHT-CHO) (3), were detected from the gas in the capsules of Asclepias physocarpa by means of GC/MS analysis. BHT-quinone and BHT-CHO as organic pollutants are the degradation products of the antioxidant 2,6-ditert-butyl-4-methylphenol (BHT). Ground water, lake water and/or rain water are a source of BHT metabolites in the plant Asclepias physocarpa.

A new spiroaxane sesquiterpene (15-hydroxy-6α,12-epoxy-7β ,10αH,11β H-spiroax-4-ene, 1) was isolated from the culture broth of the basidiomycete Pholiota adiposa. The structure of 1 was established on the basis of MS, IR, ID, and 2D NMR experiments.

A novel sesquiterpene named cyclopinol (1) together with two related known compounds, cyclocalopin A (2) and Oacetylcyclocalopin A (3), has been isolated from the basidiomycete Boletus calopus. The structure of compound 1 was established on the basis of spectral methods (MS, IR, 1D, and 2D NMR experiments).

A new ceramide, named hygrophamide (1), was isolated from the fruiting bodies of the basidiomycetes Hygrophorus eburnesus Fr.. The structure of the compound was elucidated as (2S, 3S, 4R, 2’R)-2-(2’-hydroxy-9’Z-ene-tetracosanoylamino)-octadecane- 1,3,4-triol (1) by spectral and chemical methods.

Two new metabolites, named crispacolide (1) and 3-acetyl-4-hydroxymethyl-tetrahydrofuran (2), were isolated from the fruiting bodies of basidiomycete Sparassis crispa (Wulf.) Fr. The structures and stereochemistry were established on the basis of spectroscopic means

Abstract

A new purple azulene pigment (1) was isolated from the fruiting bodies of the basidiomycete Lactarius deliciosus together with one known pigment (2). The structures of the pigments were established on the basis of spectral evidence (MS, IR, 1D- and 2D-NMR experiments).