
%0 Journal Article
%A Jurd, L 
%A Wong, RY 
%T New quinolinone alkaloids from the heartwood of, <I>Euxylophora paraensis</I>
%J Australian Journal of Chemistry
%D 1981/08/01
%V 34
%N 8
%P 1625-1632
%K 
%R https://doi.org/10.1071/CH9811625
%U https://www.publish.csiro.au/paper/CH9811625 
%X The heartwood of Euxylophora paraensis Hub. (Rutaceae) has given N-methylflindersine (2),spectabiline (3), skimmianine (4) and two new alkaloids, identified from spectroscopic data as 4-hydroxy-2,2,6-trimethyl-3,4,5,6-tetrahydro-2H-pyrano[3,2-c]quinolin-5-one (5) and 4-(2,3-dihydroxy-3-methylbutoxy)-1-methylquinolin-2(1H)-one (6). Five new dimeric quinolinone alkaloids, C30H30N2O4, were isolated. The structure of one of these, paraensidimerin D, has now been shown by single-crystal X-ray diffraction methods to be (11), viz. (6a&#945;,7&#945;,14a&#945;)-6,6,9,16- tetramethyl-7-(2-methylprop-1-enyl)-6,6a,7,9,14a,16-hexahydro-8H,15H- quino[3'',4'':5',6'] pyrano [2',3':4,5] pyrano-[3,2-c]quinoline-8,15- dione. 
