Autor(es): Cruz, Frederico Guare ; Moreira, Luciana M. ; David, Jorge Mauricio ; Guedes, Maria L. S. ; Chávez, Juceni P. ; Cruz, Frederico Guare ; Moreira, Luciana M. ; David, Jorge Mauricio ; Guedes, Maria L. S. ; Chávez, Juceni P.
Data: 2013
Origem: Oasisbr
Assunto(s): Kielmeyera reticulata; Guttiferae; stems; 4-phenylcoumarin; neoflavonoid
Texto completo: acesso restrito. p.1363–1366
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Made available in DSpace on 2013-01-30T14:57:02Z (GMT). No. of bitstreams: 1 Cruz.pdf: 354967 bytes, checksum: 5d5514bfbb6b990ab574dde28dde552b (MD5) Previous issue date: 1998
Five new prenylated 4-phenylcoumarins were isolated from the hexane extract of the stems of Kielmeyera reticulata, 7-hydroxy-8-(4-cinnamoyl-3-methyl-1-oxobutyl)-4-phenyl-2′,2′-dimethyl 2H,6H-benzo[1,2-b:3,4-b′]-dipyran-2-one, 7-hydroxy-8-(4-hydroxy-3-methyl-1-oxobutyl)-4-phenyl-2′,2′-dimethyl-2H,6H-benzo [1,2-b:3,4-b′]-dipyran-2-one, 5-hydroxy-6-(4-cinnamoyl-3-methyl-1-oxobutyl)-4-phenyl-2′,2′-dimethyl-2H,6H-benzo [1,2-b:3,4-b′]-dipyran-2-one, 5,7-dihydroxy-6-(4-cinnamoyl-3-methyl-1-oxobutyl)-8-(3-methyl-2-butenyl)-4-phenyl-2H-1-benzopyran-2-one, and 5,7-dihydroxy-6-(4-hydroxy-3-methyl-1-oxobutyl)-8-(3-methyl-2-butenyl)-4-phenyl-2H-1-benzopyran-2-one, These compounds were identified from spectral evidence and compared with literature data.
