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Compositional Diversity of Terpenoids in the Himalayan Valeriana Genera
Author(s) -
Mathela Chandra S.,
Chanotiya Chandan S.,
Sammal Subhash S.,
Pant Anil K.,
Pandey Siddharth
Publication year - 2005
Publication title -
chemistry and biodiversity
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.427
H-Index - 70
eISSN - 1612-1880
pISSN - 1612-1872
DOI - 10.1002/cbdv.200590087
Subject(s) - chemotype , patchouli , terpenoid , chemistry , botany , stereochemistry , biology , food science , essential oil
In an effort to determine the chemical diversity of the Valeriana genera of the Northwestern Himalaya (Uttaranchal), V. wallichii, V. himalayana (syn. V. dioica ), V. pyrolaefolia , and V. hardwickii var. arnottiana were investigated for their terpenoid compositions by means of GC and GC/MS analyses of their essential oils, as well as by one‐ and two‐dimensional NMR studies of the isolates. Our results establish that V. wallichii DC. includes two stable chemotypes, with no mixed population, chemotype I being characterized by the presence of maaliol ( 1 ), and chemotype II having patchouli alcohol ( 2 ) and 8‐acetoxypatchouli alcohol ( 3 ) as major compounds. V. hardwickii var. arnottiana was also found to exist as two independent chemotypes. Here, chemotype I is characterized by α ‐kessyl acetate ( 4 ), valeracetate ( 5 ), and 8‐epikessyl glycol diacetate ( 6 ), whereas the chemotype‐II species contain maaliol ( 1 ) and kessanyl acetate ( 7 ). V. himalayana Grub. had maaliol ( 1 ), valeranone ( 8 ), kessane ( 9 ), and α ‐kessyl acetate ( 4 ) as major compounds, and V. pyrolaefolia Decne . contained patchouli alcohol ( 2 ) and valeranone ( 8 ) as markers.