Trachylobium verrucosum

Martin, S. S., Langenheim, J. H. and Zavarin, E. 1973. Compositional variation of leaf pocket sesquiterpenes in Trachylobium verrucosum. Biochem. Syst. 1 35-37. 

From the plant Agathis robusta a group of labdane isomers at C-13 have been isolated and related to 13-e/n-manool after interconvertion using lithium in diaminoethane [110]. The Hymenaea species, i.e H. ablongifolia and H. parvifolia, have been studied and enantiopinifolic acid as well as guamaic acid have been isolated, while enantio-13-ep/-labdanolic acid has been isolated from Trachylobium verrucosum [111]. 

C20H30O3 M 318.455 Ac ent-3p-AcetoxyAS-kauren-l -oic acid. 3-Acetoxykaurenic acid C22H32O4 M 360.492 Constit. of Trachylobium verrucosum. 

Colouring matter obtained from Rhus spp., also in Trachylobium verrucosum, AnthyHis vulneraria, Butea frondosa, Gleditsia spp., Acacia spp. and others. Used as EtOH soln. for photometric detn. of Al, B, Be, Bi, Cd, Cu, Fe, Pb, Sb, U, Zr, Cr and rare earths 430 nm, E 17000). Yellow cryst. Sol. EtOH, MeOH. Mp 330°. Shows brilliant yellow fluor. 

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