Antibacterial Pentacyclic Polyketides from a Soil-Derived Streptomyces.

Nine new pentacyclic polyketides, fasamycins G–K (1–5) and formicamycins N–Q (6–9), along with 10 known analogues (10–19), were isolated from a rhizospheric soil-derived Streptomyces sp. KIB-1414. ...