Diterpenes from Xylopia langsdorffiana

作者：dos Santos Paula F; Duarte Marcelo C; Bezerra Denise Aline C; Agra Maria de F; Barbosa Filho Jose M; da Silva Marcelo S; Tavares Josean F^*

来源：Helvetica Chimica Acta, 2013, 96(6): 1085-1092.

DOI：10.1002/hlca.201200372

• Xylopia landsdorffiana
• Diterpenes
• Xylodiol 7-acetate
• Xylopinone
• Labdorffianic acids A and B

The phytochemical investigation of Xylopia langsdorffiana A.St.-Hil. & Tul. led to the isolation of eight diterpenes, i.e., of the four new compounds (5,7,8,9,10,12)-atisane-7,16-diol 7-acetate (1), named xylodiol 7-acetate, (5,8,9,10,12)-16-hydroxyatisan-7-one (2), named xylopinone, (3,12Z)-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.

• 出版日期2013-6