A new natural auaternary indole slkaloid isolated from Tabernaemontana laeta Mart. (Apocynaceae)
A new natural quaternary alkaloid, Nb-methylvoachalotine (1), was obtained from the root bark of Tabernaemontana laeta together with three dimeric indole alkaloids, conodurine (2), voacamine (3) and tabernamine (4), and the monomeric indole alkaloids 19S-heyneanine (5), coronaridine (6) and voacangine (7). The known triterpenes alpha-amyrin acetate, beta-amyrin acetate, lupeol acetate and taraxasterol acetate and the phytosterol beta-sitosterol and its 3-O-beta-D-glucoside were also identified. The structures of the compounds were elucidated based on spectroscopic studies.
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Sociedade Brasileira de Química
2001
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oai:scielo:S0103-505320010003000082001-10-02A new natural auaternary indole slkaloid isolated from Tabernaemontana laeta Mart. (Apocynaceae)Medeiros,Walter L. B.Vieira,Ivo José C.Mathias,LedaBraz-Filho,RaimundoSchripsema,Jan Tabernaemontana laeta Apocynaceae indole-alkaloids triterpenes A new natural quaternary alkaloid, Nb-methylvoachalotine (1), was obtained from the root bark of Tabernaemontana laeta together with three dimeric indole alkaloids, conodurine (2), voacamine (3) and tabernamine (4), and the monomeric indole alkaloids 19S-heyneanine (5), coronaridine (6) and voacangine (7). The known triterpenes alpha-amyrin acetate, beta-amyrin acetate, lupeol acetate and taraxasterol acetate and the phytosterol beta-sitosterol and its 3-O-beta-D-glucoside were also identified. The structures of the compounds were elucidated based on spectroscopic studies.info:eu-repo/semantics/openAccessSociedade Brasileira de QuímicaJournal of the Brazilian Chemical Society v.12 n.3 20012001-06-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532001000300008en10.1590/S0103-50532001000300008 |
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Medeiros,Walter L. B. Vieira,Ivo José C. Mathias,Leda Braz-Filho,Raimundo Schripsema,Jan |
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Medeiros,Walter L. B. Vieira,Ivo José C. Mathias,Leda Braz-Filho,Raimundo Schripsema,Jan A new natural auaternary indole slkaloid isolated from Tabernaemontana laeta Mart. (Apocynaceae) |
| author_facet |
Medeiros,Walter L. B. Vieira,Ivo José C. Mathias,Leda Braz-Filho,Raimundo Schripsema,Jan |
| author_sort |
Medeiros,Walter L. B. |
| title |
A new natural auaternary indole slkaloid isolated from Tabernaemontana laeta Mart. (Apocynaceae) |
| title_short |
A new natural auaternary indole slkaloid isolated from Tabernaemontana laeta Mart. (Apocynaceae) |
| title_full |
A new natural auaternary indole slkaloid isolated from Tabernaemontana laeta Mart. (Apocynaceae) |
| title_fullStr |
A new natural auaternary indole slkaloid isolated from Tabernaemontana laeta Mart. (Apocynaceae) |
| title_full_unstemmed |
A new natural auaternary indole slkaloid isolated from Tabernaemontana laeta Mart. (Apocynaceae) |
| title_sort |
new natural auaternary indole slkaloid isolated from tabernaemontana laeta mart. (apocynaceae) |
| description |
A new natural quaternary alkaloid, Nb-methylvoachalotine (1), was obtained from the root bark of Tabernaemontana laeta together with three dimeric indole alkaloids, conodurine (2), voacamine (3) and tabernamine (4), and the monomeric indole alkaloids 19S-heyneanine (5), coronaridine (6) and voacangine (7). The known triterpenes alpha-amyrin acetate, beta-amyrin acetate, lupeol acetate and taraxasterol acetate and the phytosterol beta-sitosterol and its 3-O-beta-D-glucoside were also identified. The structures of the compounds were elucidated based on spectroscopic studies. |
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Sociedade Brasileira de Química |
| publishDate |
2001 |
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http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532001000300008 |
| work_keys_str_mv |
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