Supporting information Unusual bridged angucyclinones and potent anticancer compounds from Streptomyces bulli GJA1 Jung Wha Kim, a Yun Kwon, a Sunghee Bang, a Ha Eun Kwon, b Sunwoo Park, c Yeonhee Lee, d Gwonhwa Song, c Dongho Lee, b Hwang-Soo Joo, d and Sang Hee Shim *,a a College of Pharmacy, Duksung Women’s University, Seoul 01369, South Korea b Department of Biosystems and Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul, 02841, Republic of Korea c Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul, 02841, Republic of Korea d College of Science and Technology, Duksung Women’s University, Seoul 01369, South Korea * Correspondence: sangheeshim@duksung.ac.kr; Tel.: +82-2-901-8774. Electronic Supplementary Material (ESI) for Organic & Biomolecular Chemistry. This journal is © The Royal Society of Chemistry 2020