1. Natural Products Research Group, Department of Chemistry, University of Surrey, Guildford, United Kingdom
2. Department of Chemistry, Rambhai Barni Rajabhat University, Chanthaburi, Thailand
3. Dipartimento di Biotecnologie, Chimica e Farmacia, Università degli Studi di Siena, Siena, Italy
4. Dipartimento di Scienze della Vita, Università degli Studi di Siena, Siena, Italy
5. Institute of Plant Sciences, Karl-Franzens-University, Graz, Austria
6. School of Chemistry and Physics, University of KwaZulu-Natal, Durban, South Africa