Constituintes químicos de Melaleuca alternifolia (Myrtaceae) Chemical constituents from Melaleuca alternifolia (Myrtaceae)
| Autor: | Tatiana R. Vieira, Luiz C. A. Barbosa, Célia R. A. Maltha, Vanderlúcia F. Paula, Evandro A. Nascimento |
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| Jazyk: | English<br />Spanish; Castilian<br />Portuguese |
| Rok vydání: | 2004 |
| Předmět: | |
| Zdroj: | Química Nova, Vol 27, Iss 4, Pp 536-539 (2004) |
| Druh dokumentu: | article |
| ISSN: | 0100-4042 1678-7064 |
| DOI: | 10.1590/S0100-40422004000400004 |
| Popis: | The first chemical study of non-volatile constituents from the bark and stem of Melaleuca alternifolia (Myrtaceae) led to the isolation and identification of 3,3'-O-dimethylellagic acid (1) and five pentacyclic triterpenes: 2alpha,3beta,23-trihydroxyolean-12-en-28-oic acid (arjunolic acid, 2), 3beta-hydroxylup-20(29)-en-27,28-dioic acid (melaleucic acid, 3), betulinic acid (4), betuline (5), 3beta-O-acetylurs-12-en-28-oic acid (6), a mixture of fatty acids and esters, and several hydrocarbons. For 2alpha,3beta,23-trihydroxyolean-12-en-28-oic acid (2) and 3beta-O-acetylurs-12-en-28-oic acid (6) a first detailed assignment of ¹H NMR is presented. |
| Databáze: | Directory of Open Access Journals |
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