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Carbon-13 NMR spectral studies on some labdane diterpenoids

✍ Scribed by Amarendra Patra; Alok K. Mitra; Swapna Biswas; Chitra Das Gupta; Ajoy Basak; A. K. Barua

Publisher
John Wiley and Sons
Year
1981
Tongue
English
Weight
237 KB
Volume
16
Category
Article
ISSN
0749-1581

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✦ Synopsis

Abstract

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.

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