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Citropremide and Citropridone: A New Ceramide and a New Acridone Alkaloid from the Stem Bark of Citropsis gabunensis
Author(s) -
Tsassi Béatrice Valerie,
Hussain Hidayat,
Geagni Albertine,
Dongo Etienne,
Ahmed Ishtiaq,
Riaz Muhammad,
Krohn Karsten
Publication year - 2011
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.201000376
Subject(s) - acridone , chemistry , alkaloid , ceramide , bark (sound) , stereochemistry , two dimensional nuclear magnetic resonance spectroscopy , carbon 13 nmr , mass spectrometry , chromatography , biochemistry , apoptosis , physics , acoustics
The structure elucidation and complete 1 H‐ and 13 C‐NMR assignments are reported for two new compounds: the ceramide citropremide ( 1 ), and the acridone alkaloid citropridone ( 2 ). Both of these secondary metabolites were isolated from the stem bark of Citropsis gabunensis. High‐resolution mass, IR and UV spectrometry, and NMR experiments including COSY, HMQC, and HMBC were used for the determination of the structures and NMR spectral assignments.