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Studies related to bark extractives of some fir and spruce species, and synthesis and biosynthesis of indole alkaloids
1970
Part I of the thesis describes four investigations of some of the neutral components of bark extractives. The petroleum ether extract of grand fir [Abies grandis (Dougl.) Lindl.] was found to contain two triterpene lactones. The first compound, cyclo-grandisolide, was shown by chemical and spectroscopic considerations and confirmed by X-ray analysis to be (2 3R)-3a-methoxy-9,19-cyclo-9β-lanost-24-ene-26 ,23-lactone (38) . The second component, epi-cyclograndisolide, was isomeric with the first
doi:10.14288/1.0059947
fatcat:zgz6n4cntjf5plh2atbe77atle