The complete assignment of ¹H- and 13C-NMR of prenylated xanthones from Tovomita spp. (Guttiferae)
The ¹H-and 13C-NMR spectral data of 1,6-dihydroxy-5-(3-methylbut-2-enyl)-6,6-dimethyl-pyrano(2,3;7,8)-6",6"-dimethyl-pyrano(2",3";3,2) xanthone and 1,3,6-trihydroxy-6,6-dimethyl-pirano(2,3;7,8)-2,5-di-(3-methylbut-2-enyl)xanthone have been unambiguously assigned by the analysis of homonuclear (¹H-¹H-COSY) and heteronuclear [¹H-13C-COSY: modulated with ¹J CH and nJ CH (n = 2 and 3, COLOC)] shift-correlated and NOE difference spectra.
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Digital revista |
| Language: | English |
| Published: |
Sociedade Brasileira de Química
1997
|
| Online Access: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50531997000300018 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|