Download full text in PDF Opens in a new window. Article suggestions will be shown in a dialog on return to ScienceDirect. ... Please enable JavaScript to use all the features on this page. ... Peroxyterpenoids have been isolated which are: methyl nuapapuanoate (4), a norditerpene; and muqubilin (1), a norsesterterpene. ... 1: 13 C NMR, noe suppressed & integrated, (CDCl 3 , 25.1MHz): 180.4(C-1); 137.1(C-13); 136.5(C-10); 126.9(C-14); 123.3(C-9); ...