A New Biphenyl from Clusia melchiorii and a New Tocotrienol from C. obdeltifolia

نویسندگان

  • Josanaide S. R. Teixeira
  • Luciana de M. Moreira
  • Maria L. da S. Guedes
  • Frederico G. Cruz
چکیده

O extrato diclorometânico do tronco de Clusia melchiorii, após fracionamento e purificação por cromatografia em gel de sílica, produziu um novo bifenilo, 2,2-dimetil-5-hidroxi-7fenilcromeno, ao lado de outros compostos conhecidos, 2,2-dimetil-5,10-diidro-2Hbenzo[g]cromeno-5,10-diona (xiloidona), ácido betulínico, friedelina, friedelinol, eufol, sitostenona, estigmastenona e uma mistura de β-sitosterol e estigmasterol. O extrato hexânico do tronco de Clusia obdeltifolia depois de fracionado em gel de sílica produziu um novo álcool δ-tocotrienílico, 2Z, 6E, 10E-13-(6-hidroxi-2,8-dimetil-3,4-diidro-2H,2-cromenil)-2,6,10trimetil-2,6,10-tridecatrien-1-ol, ao lado dos ácidos 2E e 2Z-δ-tocotrienolóico, betulínico e betulônico, betulinaldeído, glutinol, friedelina, sitostenona e uma mistura de β-sitosterol e estigmasterol. As estruturas dos compostos isolados foram determinadas através de seus dados espectroscópicos.

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تاریخ انتشار 2006