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. ... Sodium borohydride reduction of 1-(2′-Bromobenzoyl)-2-methyl-3,4-dihydro-6,7-methylenedioxyisoquinolinium iodide ( ) gave a mixture of alcohols which on irradiation in dil.HCl afforded (±) oliveroline and (±)ushinsunine. ... We are very grateful to Prof. A. Cave for a sample of (−) oliveroline.