From the leaves of Flindersia bourjotinna F. Muell. there
were isolated sitosterol, triacontanol, lupeol, germanicol, germanicone,
and four new triterpenoids, the bourjotinolones
A, B, and C, and bourjotone. By chemical degradation
and spectroscopic methods, the structures of these substances were shown to be
21,24-epoxy-23,25-dihydroxytirucall-7-en-3one,
23,24-dihydroxytirucalla-7,25-dien- 3-one,
25-chloro-23,24-dihydroxytirucall-7-en-3-one, and 25,26,27-trisnortirucall-7-
ene-3,23-dione, respectively.
Bourjotinolone C
is almost certainly an artefact but bourjotinolone B
and bourjotone are less likely to be. From biogenetic
and N.M.R. spectral considerations, the absolute stereochemistry of the new
triterpenes may be deduced.
From the wood of Flindersia laevicarpa C.T. White & Francis, there has been isolated skimmianine, hesperidin, β-sitosterol, and two alcohols. One of these was identified as 1,5-diphenylpentan-3-ol, and the other was shown by degradation and synthesis to be (-)-erythro-1,5-diphenylpentan-1,3-diol.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.