A Novel Alkaloid from Aspidosperma pyricollum (Apocynaceae) and Complete 1H and 13C Chemical Shift Assignments |
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| Authors: | Hádria M do?Carmo Raimundo Braz‐Filho Ivo J Curcino Vieira |
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| Affiliation: | 1. Setor de Química de Produtos Naturais, Universidade Estadual do Norte Fluminense Darcy Ribeiro, 28013‐602, Campos dos Goytacazes, Rio de Janeiro, Brazil, (phone: +55‐22‐27486504;2. fax: +55‐22‐27397248) |
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| Abstract: | A novel natural product indole, alkaloid, named rel‐pyricolluminol ( 1 ), was isolated from Aspidosperma pyricollum Müll .Arg . together with six known metabolites sitsirikine ( 2 ), aparicin ( 3 ), ulein ( 4 ), stemmadenine ( 5 ), lupeol ( 6 ), and (3β)‐sitoster‐3‐yl β‐D ‐glucopyranoside ( 7 ). These compounds were characterized on the basis of their spectral data, mainly 1D‐ (1H,13C‐DEPTQ) and 2D‐NMR (1H,1H‐COSY, NOESY, HSQC, and HMBC), and mass spectra (EI‐MS and HR‐ES‐MS), involving also comparison with data from the literature. |
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| Keywords: | Aspidosperma pyricollum Alkaloids rel‐Pyricolluminol |
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