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. ... Synthesis of optically active deethylcatharanthine ( ) was performed in a few steps. While studying various approaches and reaction conditions new rearrangements ( → → and → ) and new heterocyclic systems (eg , , , ) were discovered. ... We are thankful to Prof. RJ Sundberg for a ...