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Carbon-13 NMR spectra of some labdane diterpenoids

✍ Scribed by Amarendra Patra; Alok K. Mitra; Swapna Biswas; Chitra Das Gupta; Tapan K. Chatterjee; K. Basu; A. K. Barua

Publisher
John Wiley and Sons
Year
1981
Tongue
English
Weight
181 KB
Volume
17
Category
Article
ISSN
0749-1581

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✦ Synopsis

Abstract

Carbon‐13 signal assignments of the labdane diterpenoids phlogantholide‐A, its diacetate and isophlogantholide‐A are reported. The assignments of the ^13^C NMR signals of 14‐deoxyandrographolide and its diacetate, made earlier, have now been confirmed by lanthanide shift studies on the former and also by ^13^C spectral studies on anhydroandrographolide diacetate and 14‐deoxy‐11,12‐didehydroandrographolide diacetate.

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