- Conformationally constrained fatty acid ethanolamides as cannabinoid and vanilloid receptor probes. Appendino, G., Ligresti, A., Minassi, A., Cascio, M.G., Allarà, M., Taglialatela-Scafati, O., Pertwee, R.G., De Petrocellis, L., Di Marzo, V. J. Med. Chem. (2009)