1. Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST); 18, Hoang Quoc Viet, Cau Giay Hanoi 10000 Viet Nam
2. Graduate University of Science and Technology, VAST; 18, Hoang Quoc Viet, Cau Giay Hanoi 10000 Viet Nam
3. Institute of Natural Products Chemistry, CNRS; 91190 Gif-sur-Yvette Cedex France