✦ LIBER ✦
Lupane Pentacyclic Triterpenes Isolated from Stems and Branches of Maytenus imbricata (Celastraceae)
✍ Scribed by Silvia Ribeiro de Souza e Silva; Gracia Divina de Fátima Silva; Luca Cláudio de Almeida Barbosa; Lucienir Pains Duarte; Sidney Augusto Vieira Filho
- Publisher
- John Wiley and Sons
- Year
- 2005
- Tongue
- German
- Weight
- 198 KB
- Volume
- 88
- Category
- Article
- ISSN
- 0018-019X
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✦ Synopsis
Abstract
Four lupane pentacyclic triterpenes were isolated from the hexane extract of stems and branches of Maytenus imbricata Mart. ex Reissek: 3‐oxolup‐20(30)‐en‐29‐al (1), 30‐hydroxylup‐20(29)‐en‐3‐one (2), (11__α__)‐11‐hydroxylup‐20(29)‐en‐3‐one (3), and (3__β__)‐lup‐20(30)‐ene‐3,29‐diol (4). The structural identification of 1–4 was achieved by ^1^H‐ and ^13^C‐NMR techniques, including 2D experiments (HSQC, HMBC, and NOESY).