N′-Methylniphimycin, a novel minor congener of niphimycin fromStreptomyces spec. 57-13

N′-Methylniphimycin, a novel minor congener of niphimycin fromStreptomyces spec. 57-13 Secondary metabolites by chemical screening. II. Amycins A and B, two novel niphimycin analogs isolated from a high producer strain of elaiophylin and nigericin. Secondary metabolites by chemical screening. II. Amycins A and B, two novel niphimycin analogs isolated from a high producer strain of elaiophylin and nigericin. Identification and Proposed Relative and Absolute Configurations of Niphimycins C–E from the Marine-Derived <i>Streptomyces</i> sp. IMB7-145 by Genomic Analysis Identification and Proposed Relative and Absolute Configurations of Niphimycins C–E from the Marine-Derived <i>Streptomyces</i> sp. IMB7-145 by Genomic Analysis Structural studies of new macrolide antibiotics, shurimycins A and B. Structure–activity relationship studies on niphimycin, a guanidylpolyol macrolide antibiotic. Part 1: The role of the N-methyl-N″-alkylguanidinium moiety A new ansamycin antibiotic, naphthomycin H from a Streptomyces species Y-83,40369. Naphthomycins L–N, Ansamycin Antibiotics from <i>Streptomyces</i> sp. CS Naphthomycins L–N, Ansamycin Antibiotics from <i>Streptomyces</i> sp. CS