G. Vidari

Sesquiterpenes from Russula sardonia

Abstract Three new sesquiterpenes, furanether A, furosardonin A and sardonialactone A (7-hydroxyblennin A), together with lactaral, vellerolactone, two known furan alcohols, lactarorufin A and cerevisterol, were isolated from Russula sardonia . Structures and stereochemistry were elucidated by spectral data and correlation to known compounds by chemical transformations.

Fungal metabolites XIII: New cytotoxic triterpene from Hebeloma species (basidiomycetes)

Abstract A new cytotoxic lanostane triterpene, named 3-β-acetyl-2-α(3′-hydroxy-3′-methyl)glutarylcrustulinol, was isolated from Hebeloma crustuliniforme and H. sinapizans . The structure has been elucidated by chemical correlations and spectroscopic evidences.

Morphological and chemical studies on the pygidial defence glands of some Carabidae (Coleoptera)

Etude effectuee sur 4 especes Pterostichus externepunctatus roccai, Nebria psammodes, Chlaenius velutinus et Chlaenius vestitus

Fungal metabolites 10. New chromenes from Lactarius fuliginosus fries and Lactarius picinus fries

Abstract 6-Methoxy-2,2-dimethylchromene (I) and five new chromenes (II-VI) were isolated from Lactarius fuliginosus and L.picinus (Basidiomycetes). These unusual structures have been elucidated by spectroscopic methods. 2,2-Dimethylchromene (VII) was identified by GC-MS in L. picinus .

Stereochemistry of blennin A and blennin D from Lactarius blennius

Abstract From the ethanolic extract of Lactarius blennius , a new sesquiterpene blennin D (2-hydroxyblennin A) was isolated and its structure elucidated together with the stereochemistry of the already known blennin A. Treatment of blennin A mesylate with DBU afforded a compound with a new skeleton.