Calceolaria andina

More recently, a new class of insecticides derived from naphthoquinones found in the South American alpine plant Calceolaria andina has entered development. Compounds are being developed jointly through the British Technology Group (BTG) (following the discovery at Rothamsted Experimental Station) and by Bayer. The mode of action of these compounds is believed to be an inhibition of respiration at site... 

Caldwell, J. J., Colman, R., Kerr, W. J., Magennis, E. J. Novel use of a selenoalkyne within untraditionally mild Dotz benzannulation processes total synthesis of a Calceolaria andina L. natural hydroxylated naphthoquinone. S/rr/eff 2001,1428-1430. 

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