Neue Phellandren‐Derivate aus dem Wurzelöl von <i>Angelica archangelica</i><scp>L</scp>

Abstract

New Phellandrene Derivatives from the Root Oil of Angelica archangelica L . 2‐Nitro‐1,5‐ p ‐menthadiene ( 5 ), trans ‐ and cis ‐6‐nitro‐1(7), 2‐ p ‐menthadiene ( 6 and 7 ), trans ‐1(7), 5‐ p ‐menthadien‐2‐yl acetate ( 9 ) and a formal phellandrene derivative, 7‐isopropyl‐5‐methyl‐5‐bicyclo [2.2.2]octen‐2‐one ( 16 ), have been identified in the root oil of Angelica archangelica L . Starting from (−)‐( R )‐α‐phellandrene ( 1 ) ( R )‐ 5 , (4 R , 6 S )‐ 6 /(4 R , 6 R )‐ 7 , (2 S , 4 R )‐ 9 and (1 R , 4 R , 7 R )‐ 16 as well as (2 S , 4 R )‐ 11 , (2 R , 4 R )‐ 12 and (2 R , 4 R )‐ 10 have been prepared.