Chromogenic triterpenoids from Cortinarius fulvoincarnatus, C. sodagnitus and related toadstools (Agaricales)

European Journal of Organic Chemistry

Volumn , Issue 1, 1999, Pages 255-260

  Sontag, Bernd ^a   Fröde, Rita ^a   Bross, Monika ^a   Steglich, Wolfgang ^a  

^a UNIVERSITY OF MUNICH   (Germany)

Author keywords

Chromogens; Natural Products; Sodagnitins; Toadstools; Triterpenoids

Indexed keywords

CHROMOGENIC SUBSTRATE; NATURAL PRODUCT; SODAGNITIN A; SODAGNITIN B; SODAGNITIN C; SODAGNITIN D; SODAGNITIN E; SODAGNITIN F; TERPENOID; TERPENOID DERIVATIVE; TRITERPENE DERIVATIVE; TRITERPENOID; UNCLASSIFIED DRUG;

AQUEOUS SOLUTION; ARTICLE; COLOR; CONJUGATE; HIGH PERFORMANCE LIQUID CHROMATOGRAPHY; ISOLATION PROCEDURE; MASS SPECTROMETRY; MUSHROOM; NONHUMAN; NUCLEAR OVERHAUSER EFFECT; PROTON NUCLEAR MAGNETIC RESONANCE; STRUCTURE ACTIVITY RELATION; STRUCTURE ANALYSIS;

EID: 0344549389     PISSN: 1434193X     EISSN: None     Source Type: Journal    
DOI: 10.1002/(SICI)1099-0690(199901)1999:1<255::AID-EJOC255>3.0.CO;2-6     Document Type: Article

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28. Structure optimisation of the oxonol anion geometry was performed by a MNDO calculation using the program AMSOL with AM 1 parameters. The determination of the excited states (only singlet states) was carried out by a PPP (Pariser-Parr-Pople) calculation using the program WPSIN, based on a π Self Consistant Field method. We are grateful to Dr. H.-U. Wagner, LMU München, for carrying out the calculations and for helpful discussions.