%0 Generic %A Zhang, Wenjun %A Yang, Chunfang %A Huang, Chunshuai %A Zhang, Liping %A Zhang, Haibo %A Zhang, Qingbo %A Yuan, Cheng-shan %A Zhu, Yiguang %A Zhang, Changsheng %D 2017 %T Pyrazolofluostatins A–C, Pyrazole-Fused Benzo[a]fluorenes from South China Sea-Derived Micromonospora rosaria SCSIO N160 %U https://acs.figshare.com/articles/dataset/Pyrazolofluostatins_A_C_Pyrazole-Fused_Benzo_i_a_i_fluorenes_from_South_China_Sea-Derived_i_Micromonospora_rosaria_i_SCSIO_N160/4541338 %R 10.1021/acs.orglett.6b03745.s002 %2 https://acs.figshare.com/ndownloader/files/7352548 %K fluorene %K benzo %K spectroscopic analyses %K EC 50 48.6 μ M %K antioxidation activity %K South China Sea-derived Micromonospora rosaria SCSIO N 160. %K South China Sea-Derived Micromonospora rosaria SCSIO N 160 Pyrazolofluostatins %K carbon skeleton %X Pyrazolofluostatins A–C (13), three new benzo­[a]­fluorenes with an unprecedented carbon skeleton, were obtained from the South China Sea-derived Micromonospora rosaria SCSIO N160. Their structures were elucidated by extensive spectroscopic analyses. The structure of pyrazolofluostatin A (1) was confirmed by X-ray crystallographic analysis. Notably, 13 possessed a benzo­[cd]­indeno­[2,1-f]­indazol skeleton with a pyrazole-fused 6/5/6/6/5 pentacyclic ring system. Pyrazolofluostatin A (1) showed moderate antioxidation activity (EC50 48.6 μM). %I ACS Publications