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Triterpene Esters Isolated from Leaves of Maytenus salicifoliaReissek

✍ Scribed by Roqueline Rodrigues Silva de Miranda; Grácia Divina de Fátima Silva; Lucienir Pains Duarte; Sidney Augusto Vieira Filho

Book ID
102254820
Publisher
John Wiley and Sons
Year
2007
Tongue
German
Weight
83 KB
Volume
90
Category
Article
ISSN
0018-019X

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✦ Synopsis

Abstract

The triterpene ester (3__β__)‐olean‐18‐en‐3‐yl stearate (1), together with (3__β__)‐urs‐12‐en‐3‐yl stearate (2), and (3__β__)‐lup‐20(29)‐en‐3‐yl stearate (3) were isolated from leaves of Maytenus salicifolia Reissek (Celastraceae). The structure of 1, a new compound, including its configuration, was established by ^1^H, ^13^C, and DEPT‐135 NMR data, including 2D experiments (HSQC, HMBC, COSY, and NOESY). The molecular mass (692 Da) was confirmed by gas chromatography coupled with mass spectrometry (CG/MS).

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Lupane Pentacyclic Triterpenes Isolated
Lupane Pentacyclic Triterpenes Isolated from Stems and Branches of Maytenus imbricata (Celastraceae)
✍ Silvia Ribeiro de Souza e Silva; Gracia Divina de Fátima Silva; Luca Cláudio de  📂 Article 📅 2005 🏛 John Wiley and Sons 🌐 German ⚖ 198 KB

## 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(3