Three Terpenoids and a Tocopherol‐Related Compound from <i>Ricinus communis</i>

Abstract

Abstract Four new compounds named (3 E ,7 Z ,11 E )‐19‐hydroxycasba‐3,7,11‐trien‐5‐one ( 1 ), 6 α ‐hydroxy‐10 β ‐methoxy‐7 α ,8 α ‐epoxy‐5‐oxocasbane‐20,10‐olide ( 2 ), 15 α ‐hydroxylup‐20(29)‐en‐3‐one ( 3 ), and (2 R ,4a R , 8a R )‐3,4,4a,8a‐tetrahydro‐4a‐hydroxy‐2,6,7,8a‐tetramethyl‐2‐(4,8,12‐trimethyltridecyl)‐2 H ‐chromene‐5,8‐dione ( 4 ) were isolated from the MeOH extracts of the aerial parts of Ricinus communis L. by chromatographic methods. Their structures were elucidated by extensive spectroscopic experiments.