Chemistry of Renieramycins. 15. Synthesis of 22-O-Ester Derivatives of Jorunnamycin A and Their Cytotoxicity against Non-Small-Cell Lung Cancer Cells

Autor: Supakarn Chamni, Naoki Saito, Pithi Chanvorachote, Khanit Suwanborirux, Nanae Mori, Natchanun Sirimangkalakitti, Kornvika Charupant
Rok vydání: 2016
Předmět:
Zdroj: Journal of Natural Products. 79:2089-2093
ISSN: 1520-6025
0163-3864
DOI: 10.1021/acs.jnatprod.6b00433
Popis: Eighteen 22-O-ester derivatives of jorunnamycin A (2) were prepared via 2, and their cytotoxicity against human non-small-cell lung cancer (NSCLC) cells was evaluated. Preliminary study of the structure-cytotoxicity relationship revealed that the ester part containing a nitrogen-heterocyclic ring elevated the cytotoxicity of the 22-O-ester derivatives. Among them, 22-O-(4-pyridinecarbonyl) ester 6a is the most potent compound (IC50 1.1 and 1.6 nM), exhibiting 21-fold and 5-fold increases in cytotoxicity against the H292 and H460 NSCLC cell lines, respectively, relative to renieramycin M (1), the major cytotoxic bistetrahydroisoquinolinequinone alkaloid of the Thai blue sponge Xestospongia sp.
Databáze: OpenAIRE