Diterpenes from Xylopia langsdorffiana |
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| Authors: | Paula F dos?Santos Marcelo C Duarte Denise Aline C Bezerra Maria de F Agra José M Barbosa?Filho Marcelo S da?Silva Josean F Tavares |
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| Institution: | 1. Centro de Ciências da Saúde, Departamento de Ciências Farmacêuticas, Universidade Federal da Paraíba, CP 5009, CEP 58051‐970, Cidade Universitária, Jo?o Pessoa‐PB, Brazil, (phone: +55?83?3216?7427;2. fax: +55?83?3216?7364) |
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| Abstract: | 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. |
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| Keywords: | Xylopia landsdorffiana Diterpenes Xylodiol 7‐acetate Xylopinone Labdorffianic acids A and B |
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