
%0 Journal Article
%A Bowden, BF 
%A Cambie, RC 
%A Parnell, JC 
%T Constituents of the Fruit of <I>Pseudopanax arboreum</I> (Araliaceae)
%J Australian Journal of Chemistry
%D 1975/01/01
%V 28
%N 1
%P 91-107
%K 
%R https://doi.org/10.1071/CH9750091
%U https://www.publish.csiro.au/paper/CH9750091 
%X Saponification and methylation of the acidic fraction of an extract of the fruit of the New Zealand tree Pseudopanax arboreum has led to the isolation of a series of ring-A substituted and ring-A seco triterpenoids possessing oleanane or ursane skeletons. These include methyl 3-oxo-24-norurs-12-en-28-oate (1), dimethyl 4-oxo-3,24-dinor- 2,3-secours-12-ene-2,28-dioate (7), methyl 2&#945;,3&#945;,23-trihydroxyolean-12- en-28-oate (10), the &#949;-lactone of 23-hydroxy-4,17-dimethoxycarbonyl- 2,3-secours-12-en-2-oic acid (15), trimethyl 24-nor-2,3-secours-12-ene- 2,3,28-trioate (20), methyl 2-hydroxy-3-oxo-24-noroleana-1,4,12-trien- 28-oate (26), and methyl 2-hydroxy-3-oxo-24-norursa-1,4,12-trien-28- oate (27) whose parent acids have not hitherto been obtained as natural products. Other compounds are methyl 2&#945;,3&#945;-dihydroxyolean-12-en-28-oate (9), methyl 2&#945;,3&#945;-dihydroxyurs-12-en-28-oate (23), methyl asiatate (24), methyl arjunolate (13), the methoxy artefact (12), and the aryl- substituted methyl cinnamates (28), (29), (30) and (31). Neutral constituents include the esters (1), (9) and (10), stigmasterol and the sesquiterpene spathulenol (32). 
