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DOI: 10.1055/s-0043-119888
Grincamycins I – K, Cytotoxic Angucycline Glycosides Derived from Marine-Derived Actinomycete Streptomyces lusitanus SCSIO LR32
Publication History
received 02 July 2017
revised 04 September 2017
accepted 14 September 2017
Publication Date:
26 September 2017 (online)
Abstract
Three new angucycline glycosides, designated grincamycin I (1), J (2), and K (3), together with the known congener A-7884 (4), were isolated from marine-derived actinomycete Streptomyces lusitanus SCSIO LR32. The structures of the new compounds were elucidated by comprehensive spectral data analysis. Compounds 2 and 4 exhibited antitumor activity against human cancer cells MDA-MB-435, MDA-MB-231, NCI-H460, HCT-116 and HepG2, and human normal breast epithelial cell MCF10A with IC50 values ranging from 0.4 to 6.9 µM. In addition, A-7884 (4) demonstrated antimicrobial activity against Micrococcus luteus with an MIC value of 1.95 µg/mL.
Key words
angucycline glycoside - naphthacenequinone - cytotoxicity - marine actinomycete - Streptomyces lusitanus - StreptomycetaceaeSupporting Information
- Supporting Information
HR-ESI-MS and NMR spectra of grincamycins I (1), J (2), and K (3) are available as Supporting Information.
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