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Planta Med 1972; 21(4): 435-437
DOI: 10.1055/s-0028-1099576
© Georg Thieme Verlag Stuttgart · New York

GENUS CROTALARIA

XI.1 THE STRUCTURE OF NILGIRIC ACIDR. S. Sawhney, C. K. Atal 1 For part X see Sawhney, R. S., and Atal, C. K.: J. Indian Chem. Soc. 47, 741 (1970)
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Publication Date:
14 January 2009 (online)

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Abstract

The pyrrolizidine alkaloid nilgirine on hydrolysis gives retronecine and nilgiric acid. The structure of nilgiric acid is found to be 1–hydroxy–2–methyl–hexa–4–ene–1:4 dicarboxylic acid. This is the first report of a C9 necic acid occurring in pyrrolizidine macrocyclic esters.

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