Abstract
Four new compounds have been isolated from the heartwood of Combretum molle and have been shown both by chemical and spectroscopic methods and by synthesis to be 4,7-dihydroxy-2,3,6-trimethoxyphenanthrene, 4,6,7-trihydroxy-2,3-dimethoxy- and 2,6-dihydroxy-3,4,7-trimethoxy-9,10-dihydrophenanthrene, and 3,4′-dihydroxy-4,5-dimethoxybibenzyl. The relevance of the latter compound to the biogenesis of the phenanthrenes and 9,10-dihydrophenanthrenes is discussed. The phenol (C′) from Combretum apiculatum has now been unambiguously established by total synthesis to be 6,7-dihydroxy-2,3,4-trimethoxyphenanthrene.
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Claims 3
Claim · model-written summary
Three substituted phenanthrene or dihydrophenanthrene compounds were isolated and structurally identified from Combretum molle heartwood.
- Taxon
- Combretum molle
Combretum mollee0 - Organ / stage
- heartwoode0
- Outcome
- 4,7-dihydroxy-2,3,6-trimethoxyphenanthrene, 4,6,7-trihydroxy-2,3-dimethoxy- and 2,6-dihydroxy-3,4,7-trimethoxy-9,10-dihydrophenanthrenee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Four new compounds have been isolated from the heartwood of Combretum molle and have been shown both by chemical and spectroscopic methods and by synthesis to be 4,7-dihydroxy-2,3,6-trimethoxyphenanthrene, 4,6,7-trihydroxy-2,3-dimethoxy- and 2,6-dihydroxy-3,4,7-trimethoxy-9,10-dihydrophenanthrene, and 3,4′-dihydroxy-4,5-dimethoxybibenzyl”
Claim · model-written summary
A substituted bibenzyl was isolated and identified from Combretum molle heartwood.
- Taxon
- Combretum molleCombretum mollee0
- Organ / stage
- heartwoode0
- Outcome
- 3,4′-dihydroxy-4,5-dimethoxybibenzyle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Four new compounds have been isolated from the heartwood of Combretum molle and have been shown both by chemical and spectroscopic methods and by synthesis to be 4,7-dihydroxy-2,3,6-trimethoxyphenanthrene, 4,6,7-trihydroxy-2,3-dimethoxy- and 2,6-dihydroxy-3,4,7-trimethoxy-9,10-dihydrophenanthrene, and 3,4′-dihydroxy-4,5-dimethoxybibenzyl”
Claim · model-written summary
Total synthesis established the identity of the phenol from Combretum apiculatum.
- Taxon
- Combretum apiculatum
Combretum apiculatume0 - Outcome
- 6,7-dihydroxy-2,3,4-trimethoxyphenanthrenee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The phenol (C′) from Combretum apiculatum has now been unambiguously established by total synthesis to be 6,7-dihydroxy-2,3,4-trimethoxyphenanthrene”