JOURNAL 297


Records of Natural Products
VOLUME & ISSUE
Year: 2010 Issue: 2 April-June
PAGES
p.109 - 114
STATISTICS
Viewed 1977 times.
AUTHORS
    Rajendra C. Padalia, Ram S. Verma and Vellu Sundaresan
PDF OF ARTICLE

GRAPHICAL ABSTRACT


ABSTRACT


The volatile constituents of three most common aromatic exotic weeds viz. Lantana camara L., Eupatorium adenophorum Spreng and Ageratum conyzoides L. of the Uttarakhand, India were analyzed by GC and GC-MS. The essential oil of Lantana camara L. was dominated by sesquiterpenoids (70.8%) represented by sesquiterpene hydrocarbons (68.7%) with germacrene D (27.9%), germacrene B (16.3%), b-caryophyllene (9.6%), b-selinene (6.2%), α-humulene (5.8%) as major constituents. Other constituents in significant amount were sabinene (5.6%) and 1,8-cineole (4.8%). Amorphenes viz. amorph-4-en-7-ol (9.6%), 3-acetoxyamorpha-4,7(11)-dien-8-one (7.8%) and amorph-4,7(11)-dien-8-one (5.7%) were identified as the marker constituents of Eupatorium adenophorum Spreng along with p-cymene (16.6%), bornyl acetate (15.6%) and camphene (8.9%). On the contrary, the essential oil of Ageratum conyzoides L. was characterized by the presence of high percentages of ageratochromene (precocene II, 42.5%), β-caryophyllene (20.7%), demethoxyageratochromene (precocene I, 16.7%), a-humulene (6.6%) and p-cymene (3.3%).

KEYWORDS
  • Lantana camara
  • Ageratum conyzoides
  • Eupatorium adenophorum
  • germacrene D
  • precocene
  • amorphene