A laccase-catalysed one-pot synthesis of aminonaphthoquinones and their anticancer activity.

Abstract:

:Nuclear monoamination of a 1,4-naphthohydroquinone with primary aromatic amines was catalysed by the commercial laccase, Novozym 51003, from Novozymes to afford aminonaphthoquinones. The synthesis was accomplished by reacting a mixture of the primary amine and 1,4-naphthohydroquinone in succinate-lactate buffer and a co-solvent, dimethylformamide, under mild reaction conditions in a vessel open to air at pH 4.5 and pH 6.0. Anticancer screening showed that the aminonaphthoquinones exhibited potent cytostatic effects particularly against the UACC62 (melanoma) cancer cell line (GI(50)=3.98-7.54 μM). One compound exhibited potent cytostatic effects against both the TK10 (renal) and the UACC62 (melanoma) cancer cell line. The cytostatic effects of this compound (GI(50)=8.38 μM) against the TK10 cell line was almost as good as that of the anticancer agent, etoposide (GI(50)=7.19μM). Two compounds exhibited potent cytostatic effects against both the UACC62 (melanoma) and the MCF7 (breast) cancer cell lines. The total growth inhibition (TGI) of most of the compounds was better than that of etoposide against the UACC62 cell line. Three compounds (TGI=7.17-7.94 μM) exhibited potent cytostatic effects against the UACC62 cell line which was 7 to 8-fold better than that of etoposide (TGI=52.71 μM). The results are encouraging for further study of the aminonaphthoquinones for potential application in anticancer therapy.

journal_name

Bioorg Med Chem

authors

Wellington KW,Kolesnikova NI

doi

10.1016/j.bmc.2012.05.028

subject

Has Abstract

pub_date

2012-07-15 00:00:00

pages

4472-81

issue

14

eissn

0968-0896

issn

1464-3391

pii

S0968-0896(12)00402-6

journal_volume

20

pub_type

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