1. Academic Validation
  2. Anthraquinones from the bark of Senna macranthera

Anthraquinones from the bark of Senna macranthera

  • An Acad Bras Cienc. 2011 Dec;83(4):1159-64. doi: 10.1590/s0001-37652011000400003.
Alexsandro Branco 1 Angelo C Pinto Jan Schripsema Raimundo Braz-Filho
Affiliations

Affiliation

  • 1 Laboratório de Fitoquímica, Departamento de Saúde, Universidade Estadual de Feira de Santana, Brazil. branco@uefs.br
Abstract

2-acetyl physcion (2-acetyl-1,8-dihydroxy-6-methoxy-3-methyl-9,10-anthraquinone, 2), a rare anthraquinone, was isolated from Senna macranthera var. nervosa (Vogel) H.S. Irwin & Barneby (Fabaceae). The chemical structure was elucidated and all (1)H and (13)C NMR chemical shifts were assigned by NMR one- ((1)HNMR, {(1)H}-(13)CNMR, and APT-(13)CNMR) and two (COSY, NOESY, HMQC and HMBC) dimensional of this natural compound. Furthermore, the minor Anthraquinones chrysophanol (3), chrysophanol-8-methyl ether (4) and physcion (5) were characterized by GC-MS analysis. The occurrence of the Anthraquinones 3-5 confirms that S. macranthera is a typical representative of the genus Senna.

Figures
Products