1. The Modernization Engineering Technology Research Center of Ethnic Minority Medicine of Hubei Province, School of Pharmaceutical Sciences South‐Central Univ. for Nationalities Wuhan 430074 P. R. China
2. Equipe de Chimie Analytique des Molécules Bioactives et Pharmacognosie Inst. Pluridisciplinaire Hubert Curien (UMR 7178, CNRS/UDS) 74 route du Rhin Illkirch 67400 France