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. ... The total synthesis of (−)-periplanone-B, the sex excitant pheromone of the American cockroach, Periplaneta americana is accomplished starting from (+)-limonene. ... Using DMAP was essential to afford the monotosylate in high yield. In the absence of DMAP, the ...