Diterpenes from Xylopia langsdorffiana

The phytochemical investigation of Xylopia langsdorffiana A.St.‐Hil. & Tul. led to the isolation of eight diterpenes, i.e., of the four new compounds (5β,7β,8α,9β,10α,12α)‐atisane‐7,16‐diol 7‐acetate (1), named xylodiol 7‐acetate, (5β,8α,9β,10α,12α)‐16‐hydroxyatisan‐7‐one (2), named xylopinone,...

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Bibliographic Details
Published in:Helvetica chimica acta 2013-06, Vol.96 (6), p.1085-1092
Main Authors: dos Santos, Paula F., Duarte, Marcelo C., Bezerra, Denise Aline C., de F. Agra, Maria, Barbosa Filho, José M., da Silva, Marcelo S., Tavares, Josean F.
Format: Article
Language:English
Subjects:
Acids
Beta
Diterpenes
Labdorffianic acids A and B
Xylodiol 7-acetate
Xylopia landsdorffiana
Xylopinone
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Summary:The phytochemical investigation of Xylopia langsdorffiana A.St.‐Hil. & Tul. led to the isolation of eight diterpenes, i.e., of the four new compounds (5β,7β,8α,9β,10α,12α)‐atisane‐7,16‐diol 7‐acetate (1), named xylodiol 7‐acetate, (5β,8α,9β,10α,12α)‐16‐hydroxyatisan‐7‐one (2), named xylopinone, (3α,12Z)‐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.
ISSN:0018-019X
1522-2675
DOI:10.1002/hlca.201200372