81559-58-2Relevant academic research and scientific papers
Bark Acids of Seven Calophyllum Species (Guttiferae)
Samaraweera, Upasiri,Sotheeswaran, Subramaniam,Sultanbawa, M. Uvais S.,Balasubramaniam, Sinnathamby
, p. 703 - 706 (2007/10/02)
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.
CALOZEYLANIC ACID, A NEW BARK ACID FROM THREE CALOPHYLLUM SPECIES (GUTTIFERAE)
Samaraweera, Unasiri,Sotheeswaran, Subramaniam,Sultanbawa, M. Uvais S.
, p. 5083 - 5086 (2007/10/02)
Calozeylanic acid has been isolated from the bark of three Callophyllum species: C.lankaensis (= C.zeylanicum), C.thwaitesii and C.walkeri.Its structure has been established as 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.
