81559-56-0

Upstream product

• 81559-55-9 2(R),3(R)-2,3-dimethyl-5-hydroxy-6-(3-methylbutanyl)-6-(3,7-dimethylocta-3,6-dienyl)-7-oxo-8-(2-carboxy-1-phenylethyl)-2,3,6,7-tetrahydrobenzo-4-pyrone (calozeylanic acid) 

Relevant academic research and scientific papers

Bark Acids of Seven Calophyllum Species (Guttiferae)

Calophyllum bracteatum, C. calaba (var. calaba), C. moonii (=C. soulattri), C. thwaitesii, C. trapezifolium, C. walkeri, and C. zeylanicum (=C. lankaensis) have been examined for their bark acids.A new acid, calozeylanic acid,has been isolated from three species and has been identified as (2R,3R)-2,3-dimethyl-5-hydroxy-6-(3-methylbuthyl)-6-(3,7-dimethylocta-3,6-dienyl)-8-(2-carboxy-1-phenylethyl)-2,3,6,7-tetrahydrobenzopyran-4,7-dione.Four species were found to be different, having the enantiomer of apetalic acid, isoapetalic acid and a minor acid identified as the structural isomer of the latter.