摘要:
AbstractApart from the well‐known constituents (+)‐β‐selinene (2), (−)‐β‐elemene (4), (+)‐β‐costol (7), (−)‐caryophyllene (17), and (−)‐elemol (19) the following sesquiterpenoids have been isolated for the first time from costus root oil (Saussurea lappa CLARKE): (−)‐α‐selinene (1), (+)‐selina‐4, 11‐diene (3), (−)‐α‐trans‐bergamotene (5), (−)‐α‐costol (6), (+)‐γ‐costol (8), (−)‐elema‐1,3,11 (13)‐trien‐12‐ol (9), (−)‐α‐costal (11), (+)‐γ‐costal (12), (+)‐γ‐costal (13), (−)‐elema‐1,3,11 (13)‐trien‐12‐al (elemenal, 14), (−)‐(E)‐trans‐bergamota‐2, 12‐dien‐14‐al (15), (−)‐ar‐curcumene (16), and (−)‐caryophyllene oxide (18). Compounds 6, 8, 9, and 13 are new sesquiterpenoids. IR. and NMR. spectra of 12 sesquiterpenoids are reproduced.