English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

Two new anthracyclinone antitumor antibiotics, maggiemycin (6, NSC-D344012) and anhydromaggiemycin (8) have been isolated from a culture of an unspeciated Streptomyces (ATCC No. 39235). Bioautography against Bacillus subtilis was used for the preliminary detection of these anthracyclinones. Structures were proposed based on their UV-visible, IR, 1H NMR, 13C NMR spectra, electron impact (EI) and high-resolution EI-MS and confirmed by partial synthesis and a direct correlation with epsilon-rhodomycinone. Both the anthracyclinones are active against KB, P388 and L1210 murine tumor cell lines; however, anhydromaggiemycin was more active than maggiemycin. A number of related anthracyclinones have also been prepared and their biological activity has been determined. The structure-activity relationship of these new anthracyclinones is also discussed.

journal of antibiotics

Maggiemycin and anhydromaggiemycin: Two novel anthracyclinone antitumor antibiotics. Isolation, structures, partical synthesis and biological properties.