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Carbon‐13 NMR spectral studies on some labdane diterpenoids
Author(s) -
Patra Amarendra,
Mitra Alok K.,
Biswas Swapna,
Gupta Chitra Das,
Basak Ajoy,
Barua A. K.
Publication year - 1981
Publication title -
organic magnetic resonance
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.483
H-Index - 72
eISSN - 1097-458X
pISSN - 0030-4921
DOI - 10.1002/mrc.1270160122
Subject(s) - labdane , andrographolide , chemistry , carbon 13 nmr , carbon fibers , stereochemistry , nuclear magnetic resonance , diterpene , organic chemistry , materials science , physics , composite number , composite material
Carbon‐13 NMR signal assignments of the labdane diterpenoids andrographolide and 14‐deoxyandrographolide, along with their acetates, and isodeoxyandrographolide have been made. This study indicates that the C‐6 and C‐11 resonance assignments of isovirescenol‐B, made earlier, should be interchanged.