Publication Date:
2013-06-20
Description:
The phytochemical investigation of Xylopia langsdorffiana A. St.-Hil. & Tul . led to the isolation of eight diterpenes, i.e. , of the four new compounds (5 β ,7 β ,8 α ,9 β ,10 α ,12 α )-atisane-7,16-diol 7-acetate ( 1 ), named xylodiol 7-acetate, (5 β ,8 α ,9 β ,10 α ,12 α )-16-hydroxyatisan-7-one ( 2 ), named xylopinone, (3 α ,12 Z )-3-hydroxy- ent -labda-8(20),12,14-trien-18-oic acid ( 3 ), named labdorffianic acid A, and 8,20-epoxy-13-hydroxy- ent -labd-14-en-18-oic acid ( 4 ), named labdorffianic acid B, and of the four known compounds 5 – 8 , i.e., ent -kauran-16-ol, ent -kaur-16-en-19-oic acid, ent -kaur-16-en-19-ol, and ent -trachyloban-18-oic acid. The structures were established by IR, HR-ESI-MS, and NMR data analysis with the aid of 2D techniques.
Print ISSN:
0018-019X
Electronic ISSN:
1522-2675
Topics:
Chemistry and Pharmacology
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