1. Department of Chemistry & Biochemistry, University of California San Diego, La Jolla, California 92093, United States
2. Skaggs
School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, La Jolla, California 92093, United States
3. Key
Laboratory of Pathogenic Microbiology and Immunology, Institute of
Microbiology, Chinese Academy of Sciences, Beijing, 100190, China
4. Center
for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, University of California San Diego, La Jolla, California 92093, United States
5. Nucleo
de Pesquisaem Produtos Naturais e Sinteticos, Departamento de Fisica
e Quimica, Faculdade de Ciencias Farmaceuticas de Ribeirao Preto, Universidade de Sao Paulo, Avenida Do Café, s/n, Campus Universitario, CEP 14040-903,
Ribeirao Preto, Sao Paulo, Brazil
6. Department
of Chemistry and Biochemistry, University of California Santa Cruz, Santa
Cruz, California 95064, United States